[Federal Register Volume 83, Number 201 (Wednesday, October 17, 2018)]
[Rules and Regulations]
[Pages 52305-52313]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: R1-2018-21460]



 ========================================================================
 Rules and Regulations
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  Federal Register / Vol. 83, No. 201 / Wednesday, October 17, 2018 / 
Rules and Regulations  

[[Page 52305]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0127; Product Identifier 2016-NM-161-AD; Amendment 
39-19447; AD 2018-20-13]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for all The 
Boeing Company Model 737 airplanes, excluding Model 737-100, -200, -
200C, -300, -400, and -500 series airplanes; all Model 757-200, -200PF, 
-200CB, and -300 series airplanes; and all Model 767-200, -300, -300F, 
and -400ER series airplanes. This AD was prompted by reports of 
latently failed motor-operated valve (MOV) actuators of the fuel 
shutoff valves. This AD requires replacing certain MOV actuators of the 
fuel shutoff valves for the left and right engines (on certain 
airplanes) and of the auxiliary power unit (APU) fuel shutoff valve (on 
Model 757 and Model 767 airplanes); and revising the maintenance or 
inspection program to incorporate certain airworthiness limitations 
(AWLs). We are issuing this AD to address the unsafe condition on these 
products.

DATES: This AD is effective November 15, 2018.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of November 15, 
2018.

ADDRESSES: For service information identified in this final rule, 
contact Boeing Commercial Airplanes, Attention: Contractual & Data 
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 
90740-5600; telephone: 562-797-1717; internet: https://www.myboeingfleet.com. You may view this service information at the 
FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, WA. 
For information on the availability of this material at the FAA, call 
206-231-3195. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0127.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0127; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, the regulatory evaluation, any comments received, and 
other information. The address for Docket Operations (phone: 800-647-
5527) is Docket Operations, U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Tak Kobayashi, Aerospace Engineer, 
Propulsion Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des 
Moines, WA 98198; phone and fax: 206-231-3553; email: 
[email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all The Boeing Company 
Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes; 
Model 757 airplanes; and Model 767 airplanes. The NPRM published in the 
Federal Register on March 9, 2017 (82 FR 13073). The NPRM was prompted 
by reports of latently failed MOV actuators of the fuel shutoff valves. 
The NPRM proposed to require replacing certain MOV actuators of the 
fuel shutoff valves for the left and right engines (on all airplanes) 
and of the APU fuel shutoff valve (on Model 757 and Model 767 
airplanes); and revising the maintenance or inspection program, as 
applicable, to incorporate certain AWLs.
    We subsequently issued a supplemental NPRM (SNPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to all Model 737 airplanes, 
excluding Model 737-100, -200, -200C, -300, -400, and -500 series 
airplanes; and all Model 757 and 767 airplanes. The SNPRM published in 
the Federal Register on April 3, 2018 (83 FR 14207). The SNPRM proposed 
to add Model 737-8 airplanes and future Model 737 airplanes to the 
applicability.
    We are issuing this AD to address a latent failure of the actuator 
for the engine or APU fuel shutoff valves, which could result in the 
inability to shut off fuel to the engine or the APU, and, in case of 
certain engine or APU fires, could result in structural failure.

Republication

    Editorial Note: Rule document 2018-21460 was originally 
published on pages 51304 through 51313 in the issue of Thursday, 
October 11, 2018. In that publication, on page 51307, in the second 
column, in (c)(1), ``Estimated -200'' should read ``-200''. The 
corrected document is published here in its entirety.

Comments

    We gave the public the opportunity to participate in developing 
this final rule. The following presents the comments received on the 
SNPRM and the FAA's response to each comment.

Request To Exclude Model 737-8 and Future Model 737

    Boeing requested that we revise the proposed AD (in the SNPRM) to 
exclude Model 737-8 airplanes and future Model 737 airplanes, because 
MOV actuator part number MA30A1017 (Boeing P/N S343T003-76) is the only 
certified MOV actuator for use on any future Model 737 airplanes as 
documented in the drawings and Illustrated Parts Catalog (IPC). The 
commenter stated that using airworthiness limitations to prohibit the 
use of parts with AD restrictions on one minor model series (Model 737 
next generation (NG) airplanes) from being used on a different minor 
model series (Model 737-8 and future Model 737 airplanes) that does not 
allow the use of the restricted parts is unnecessary and implies that 
certified configurations and ADs can be overridden via an Advisory 
Circular (AC) or other means.
    We disagree with the commenter's request. The MOV actuator 
currently allowed on Model 737-8 and 737-9 airplanes, part number 
MA30A1017

[[Page 52306]]

(Boeing P/N S343T003-76), is the only part number certificated on those 
models, as documented in the manufacturer's drawings. However, 
manufacturer's proprietary drawings are not readily available to all 
affected operators, and there is no prohibition against installing MOV 
actuator part numbers that were determined unsafe in this AD. We have 
been informed by operators that the practice of rotating physically 
interchangeable parts among airplanes is widespread, and even a key 
part of their operations. In the absence of an AD or AWL that restricts 
the installation of the affected parts, we cannot be assured that the 
unsafe condition will not be introduced to Model 737-8, 737-9, and 
future 737 airplanes. In addition, ACs are advisory in nature and do 
not include mandatory actions. Therefore, ACs do not take precedence 
over ADs. We have not changed this AD regarding this issue.

Request To Remove Requirement To Revise Maintenance Program

    Boeing requested that we remove paragraph (j) of the proposed AD 
and revise FAA AC 120-77 or other applicable advisory material to 
preclude installation of equipment that both Boeing and the FAA have 
determined cause a potential safety issue, against certified 
configurations. Boeing suggested that listing parts that are not 
approved for use on a given model sets a precedent that can become 
unmanageable, and that identifying parts that are acceptable for a 
given airplane and installation position is a more explicit and 
manageable approach. Boeing added that the use of AWLs to prohibit AD-
driven part installations is unnecessary and implies that certified 
configurations and ADs can be overridden via an AC or other means.
    We disagree with the commenter's request. The FAA is currently 
considering revising AC 120-77 to help prevent the rotation of parts as 
a minor alteration. However, ACs are advisory in nature and do not 
include mandatory actions. Therefore, ACs cannot prohibit the 
installation of unsafe equipment, and they do not take precedence over 
ADs. In addition, the practice of rotating parts is widespread, and 
revising the AC will not improve the situation in a timely manner. 
Certain MOV actuator part numbers have been identified to be unsafe for 
installation at certain locations. Since those part numbers continue to 
be available and acceptable for installation at certain other 
locations, we consider the use of AWLs to prohibit specific parts 
installation to be a reasonable way to address the safety concern in a 
timely manner. We have not changed this AD regarding this issue.

Request To Clarify Affected Part Numbers

    FedEx requested that we revise paragraphs (h)(2) and (h)(3) of the 
proposed AD (in the SNPRM) to state that no replacement is necessary if 
the MOV actuator part number is one of the following alternative part 
numbers: AV-31-1 (Boeing P/N S343T003-111), MA11A1265 (Boeing P/N 
S343T003-14), or MA11A1265-1 (Boeing P/N S343T003-41). FedEx stated 
that the service information specified in paragraphs (h)(2) and (h)(3) 
of the proposed AD (in the SNPRM) explicitly state that those 
alternative MOV actuator part numbers are acceptable substitutes for P/
N MA30A1017 (Boeing P/N S343T003-76).
    We disagree with the commenter's request. However, we agree to 
clarify the requirements of paragraphs (h)(2) and (h)(3) of this AD. 
Paragraphs (h)(2) and (h)(3) of this AD require replacement of MOV 
actuator P/N MA20A2027 (Boeing P/N S343T003-56) and P/N MA30A1001 
(Boeing P/N S343T003-66) with an acceptable MOV actuator part number. 
Those paragraphs do not state or imply that MOV actuator P/N AV-31-1 
(Boeing P/N S343T003-111), P/N MA11A1265 (Boeing P/N S343T003-14), or 
P/N MA11A1265-1 (Boeing P/N S343T003-41) must be replaced. Therefore, 
we consider that adding the proposed statement is unnecessary. We have 
not changed this AD regarding this issue.

Request To Add a Terminating Action Provision

    FedEx requested that we revise paragraphs (i)(2) and (i)(3) of the 
proposed AD (in the SNPRM) to state that the actuator installation 
would terminate the daily functional checks required by AWLs 28-AWL-ENG 
and 28-AWL-APU. The commenter added that installation of MOV actuator 
part number MA30A1017 (Boeing P/N S343T003-76) or an acceptable 
alternative part number should substantially increase the safety value.
    We disagree with the commenter's request. We have determined that 
accomplishing the applicable maintenance or inspection program 
revisions specified in paragraph (j) of this AD are the appropriate 
terminating actions. As discussed previously in the preamble of the 
SNPRM, we included the conditions (accomplishing the applicable 
maintenance or inspection program revisions) that would terminate the 
requirements of AD 2015-21-10, Amendment 39-18303 (80 FR 65130, October 
26, 2015); AD 2015-19-04, Amendment 39-18267 (80 FR 55505, September 
16, 2015); and AD 2015-21-09, Amendment 39-18302 (80 FR 65121, October 
26, 2015). Those ADs require incorporation of the AWLs that require 
repetitive inspections of specific MOV actuator part numbers installed 
at specific locations. The requirements of those ADs may be terminated 
if the applicable conditions specified in paragraph (m) of this AD are 
met. We have not changed this AD regarding this issue.

Request To Refer to Latest Service Information

    Southwest Airlines requested that we refer to the latest revisions 
of the airworthiness limitations documents.
    We agree with the commenter's request and have revised this AD to 
refer to the current airworthiness limitations as the appropriate 
source of service information, and have included earlier revisions of 
the service information as credit in this AD. There are no changes to 
the required actions of this AD because the tasks that must be 
incorporated into the maintenance or inspection program are not changed 
in Boeing 737-600/700/700C/800/900/900ER Special Compliance Items/
Airworthiness Limitations, D626A001-9-04, Revision June 2018; Boeing 
757 Maintenance Planning Data (MPD) Document, Section 9, Airworthiness 
Limitations (AWLS) and Certification Maintenance Requirements (CMRs), 
D622N001-9, Revision May 2018; or Boeing 767-200/300/300F/400 Special 
Compliance Items/Airworthiness Limitations, D622T001-9-04, Revision 
March 2018; except for Task 28-AWL-23 for Model 767-200, -300, -300F, 
and -400ER series airplanes, which adds instructions that further 
describe the conditions for performing electrical bonding resistance 
measurements, in addition to being more descriptive regarding cap seal 
application.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this final rule with the changes described previously and minor 
editorial changes. We have determined that these minor changes:
     Are consistent with the intent that was proposed in the 
SNPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the SNPRM.
    We also determined that these changes will not increase the 
economic

[[Page 52307]]

burden on any operator or increase the scope of this final rule.

Related Service Information Under 1 CFR Part 51

    We reviewed the following service information.
     Boeing Service Bulletin 737-28-1314, dated November 17, 
2014, describes procedures for installing new MOV actuators of the fuel 
shutoff valves for the left and right engines on Model 737-600, -700, -
700C, -800, -900, and -900ER series airplanes.
     Boeing 737-600/700/700C/800/900/900ER Special Compliance 
Items/Airworthiness Limitations, D626A001-9-04, Revision June 2018, 
describes AWLs for fuel tank ignition prevention on Model 737-600, -
700, -700C, -800, -900, and -900ER series airplanes.
     Boeing Special Attention Service Bulletin 757-28-0138, 
Revision 1, dated June 19, 2017, describes procedures for installing 
new MOV actuators of the fuel shutoff valves for the left and right 
engines, and of the APU fuel shutoff valve, on Model 757 airplanes.
     Boeing 757 Maintenance Planning Data (MPD) Document, 
Section 9, Airworthiness Limitations (AWLs) and Certification 
Maintenance Requirements (CMRs), D622N001-9, Revision May 2018, 
describes AWLs for fuel tank ignition prevention on Model 757 
airplanes.
     Boeing Service Bulletin 767-28-0115, Revision 1, dated 
June 2, 2016, describes procedures for installing new MOV actuators of 
the fuel shutoff valves for the left and right engines, and of the APU 
fuel shutoff valve, on Model 767 airplanes.
     Boeing 767-200/300/300F/400 Special Compliance Items/
Airworthiness Limitations, D622T001-9-04, Revision March 2018, 
describes AWLs for fuel tank ignition prevention on Model 767 
airplanes.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 2,557 airplanes of U.S. registry. 
We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
             Action                   Labor cost          Parts cost       Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Inspection and replacement Model  Up to 6 work-hours  Up to $12,000.....  Up to $12,510.....  Up to $18,014,400.
 737 (1,440 airplanes).            x $85 per hour =
                                   Up to $510.
Inspection and replacement Model  Up to 9 work-hours  Up to $18,000.....  Up to $18,765.....  Up to $12,666,375.
 757 (675 airplanes).              x $85 per hour =
                                   Up to $765.
Inspection and replacement Model  Up to 9 work-hours  Up to $18,000.....  Up to $18,765.....  Up to $8,294,130.
 767 (442 airplanes).              x $85 per hour =
                                   Up to $765.
----------------------------------------------------------------------------------------------------------------

    For the maintenance/inspection program revision, we have determined 
that this action takes an average of 90 work-hours per operator, 
although we recognize that this number may vary from operator to 
operator. In the past, we have estimated that this action takes 1 work-
hour per airplane. Since operators incorporate maintenance or 
inspection program changes for their affected fleets, we have 
determined that a per-operator estimate is more accurate than a per-
airplane estimate. Therefore, we estimate the total cost per operator 
to be $7,650 (90 work-hours x $85 per work-hour).

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. Subtitle VII: Aviation Programs, 
describes in more detail the scope of the Agency's authority.
    We are issuing this rulemaking under the authority described in 
Subtitle VII, Part A, Subpart III, Section 44701: ``General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to transport category airplanes and 
associated appliances to the Director of the System Oversight Division.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.

[[Page 52308]]

Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

2018-20-13 The Boeing Company: Amendment 39-19447; Docket No. FAA-
2017-0127; Product Identifier 2016-NM-161-AD.

(a) Effective Date

    This AD is effective November 15, 2018.

(b) Affected ADs

    This AD affects AD 2015-21-09, Amendment 39-18302 (80 FR 65121, 
October 26, 2015) (``AD 2015-21-09''); AD 2015-19-04, Amendment 39-
18267, (80 FR 55505, September 16, 2015) (``AD 2015-19-04''); and AD 
2015-21-10, Amendment 39-18303 (80 FR 65130, October 26, 2015) (``AD 
2015-21-10'').

(c) Applicability

    This AD applies to all The Boeing Company airplanes, 
certificated in any category, identified in paragraphs (c)(1), 
(c)(2), and (c)(3) of this AD.
    (1) Model 737 airplanes, excluding Model 737-100, -200, -200C, -
300, -400, and -500 series airplanes.
    (2) Model 757-200, -200PF, -200CB, and -300 series airplanes.
    (3) Model 767-200, -300, -300F, and -400ER series airplanes.

(d) Subject

    Air Transport Association (ATA) of America Code 28; Fuel.

(e) Unsafe Condition

    This AD was prompted by reports of latently failed motor-
operated valve (MOV) actuators of the fuel shutoff valves. We are 
issuing this AD to prevent a latent failure of the actuator for the 
engine or auxiliary power unit (APU) fuel shutoff valves, which 
could result in the inability to shut off fuel to the engine or the 
APU, and, in case of certain engine or APU fires, could result in 
structural failure.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Inspection To Determine Part Number (P/N)

    (1) For Model 737-600, -700, -700C, -800, -900, and -900ER 
series airplanes: Within 8 years after the effective date of this 
AD, do an inspection to determine the part numbers of the MOV 
actuators of the fuel shutoff valves for the left and right engines, 
in accordance with the Accomplishment Instructions of Boeing Service 
Bulletin 737-28-1314, dated November 17, 2014. A review of airplane 
maintenance records is acceptable in lieu of this inspection if the 
part number of the MOV actuator at each location can be conclusively 
determined from that review.
    (2) For airplanes identified in paragraphs (c)(2) and (c)(3) of 
this AD: Within 8 years after the effective date of this AD, do an 
inspection to determine the part numbers of the MOV actuators of the 
fuel shutoff valves for the left and right engines, and of the APU 
fuel shutoff valve, in accordance with the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 757-28-
0138, Revision 1, dated June 19, 2017 (``SB 757-28-0138 R1''); or 
Boeing Service Bulletin 767-28-0115, Revision 1, dated June 2, 2016 
(``SB 767-28-0115 R1''); as applicable. A review of airplane 
maintenance records is acceptable in lieu of this inspection if the 
part number of the MOV actuator at each location can be conclusively 
determined from that review.

(h) Replacement

    (1) For Model 737-600, -700, -700C, -800, -900, and -900ER 
series airplanes on which any MOV actuator having P/N MA20A2027 or 
P/N MA30A1001 (Boeing P/N S343T003-56 or Boeing P/N S343T003-66, 
respectively), is found during the inspection required by paragraph 
(g)(1) of this AD: Within 8 years after the effective date of this 
AD, replace each affected MOV actuator with an MOV actuator having 
P/N MA30A1017 (Boeing P/N S343T003-76), in accordance with the 
Accomplishment Instructions of Boeing Service Bulletin 737-28-1314, 
dated November 17, 2014. Where Boeing Service Bulletin 737-28-1314, 
dated November 17, 2014, specifies the installation of a new MOV 
actuator, this AD allows the installation of a new or serviceable 
MOV actuator. While not required by this AD, the Accomplishment 
Instructions specified in Boeing Service Bulletin 737-28-1314, dated 
November 17, 2014, for replacing MOV actuators having Boeing P/N 
S343T003-66 or Boeing P/N S343T003-56 may be used for replacing MOV 
actuators having P/N MA20A1001-1 (Boeing P/N S343T003-39).
    (2) For airplanes identified in paragraph (c)(2) of this AD on 
which any MOV actuator having P/N MA20A2027 or P/N MA30A1001 (Boeing 
P/N S343T003-56 or Boeing P/N S343T003-66, respectively) is found 
during the inspection required by paragraph (g)(2) of this AD: 
Within 8 years after the effective date of this AD, replace each 
affected MOV actuator with an MOV actuator having P/N MA30A1017 
(Boeing P/N S343T003-76), P/N AV-31-1 (Boeing P/N S343T003-111), or 
P/N MA11A1265-1 (Boeing P/N S343T003-41), in accordance with the 
Accomplishment Instructions of SB 757-28-0138 R1. Where SB 757-28-
0138 R1 specifies the installation of a new MOV actuator, this AD 
allows the installation of a new or serviceable MOV actuator. While 
not required by this AD, the Accomplishment Instructions specified 
in SB 757-28-0138 R1 for replacing MOV actuators having Boeing P/N 
S343T003-66 or Boeing P/N S343T003-56 may be used for replacing MOV 
actuators having P/N MA20A1001-1 (Boeing P/N S343T003-39).
    (3) For airplanes identified in paragraph (c)(3) of this AD on 
which any MOV actuator having P/N MA20A2027 (Boeing P/N S343T003-56) 
or P/N MA30A1001 (Boeing P/N S343T003-66) is found during the 
inspection required by paragraph (g)(2) of this AD: Within 8 years 
after the effective date of this AD, replace each affected MOV 
actuator with an MOV actuator having P/N MA30A1017 (Boeing P/N 
S343T003-76), P/N AV-31-1 (Boeing P/N S343T003-111), P/N MA11A1265 
(Boeing P/N S343T003-14), or P/N MA11A1265-1 (Boeing P/N S343T003-
41), in accordance with the Accomplishment Instructions of SB 767-
28-0115 R1. Where SB 767-28-0115 R1 specifies the installation of a 
new MOV actuator, this AD allows the installation of a new or 
serviceable MOV actuator. While not required by this AD, the 
Accomplishment Instructions specified in SB 767-28-0115 R1, for 
replacing MOV actuators having Boeing P/N S343T003-66 or Boeing P/N 
S343T003-56 may be used for replacing MOV actuators having P/N 
MA20A1001-1 (Boeing P/N S343T003-39).

(i) Maintenance or Inspection Program Revision

    (1) For Model 737-600, -700, -700C, -800, -900, and -900ER 
series airplanes with an original certificate of airworthiness or 
original export certificate of airworthiness issued on or before the 
effective date of this AD: Prior to or concurrently with the actions 
required by paragraph (h)(1) of this AD or within 30 days after the 
effective date of this AD, whichever is later, revise the 
maintenance or inspection program, as applicable, to add the 
airworthiness limitations (AWLs) specified in paragraphs (i)(1)(i), 
(i)(1)(ii), and (i)(1)(iii) of this AD. The initial compliance time 
for accomplishing the actions required by AWL No. 28-AWL-24 is 
within 6 years since the most recent inspection was performed in 
accordance with AWL No. 28-AWL-24, or within 6 years since the 
actions specified in Boeing Alert Service Bulletin 737-28A1207 were 
accomplished, whichever is later.
    (i) AWL No. 28-AWL-21, Motor Operated Valve (MOV) Actuator--
Lightning and Fault Current Protection Electrical Bond, as specified 
in Boeing 737-600/700/700C/800/900/900ER Special Compliance Items/
Airworthiness Limitations, D626A001-9-04, Revision June 2018.
    (ii) AWL No. 28-AWL-22, Motor Operated Valve (MOV) Actuator--
Electrical Design Feature, as specified in Boeing 737-600/700/700C/
800/900/900ER Special Compliance Items/Airworthiness Limitations, 
D626A001-9-04, Revision June 2018.
    (iii) AWL No. 28-AWL-24, Spar Valve Motor Operated Valve (MOV) 
Actuator--Lightning and Fault Current Protection Electrical Bond, as 
specified in Boeing 737-600/700/700C/800/900/900ER Special 
Compliance Items/Airworthiness Limitations, D626A001-9-04, Revision 
June 2018.
    (2) For airplanes identified in paragraph (c)(2) of this AD: 
Prior to or concurrently with the actions required by paragraph 
(h)(2) of this AD, revise the maintenance or inspection program, as 
applicable, to add the AWLs specified in paragraphs (i)(2)(i), 
(i)(2)(ii), and (i)(2)(iii) of this AD. The initial compliance time 
for accomplishing the actions required by AWL No. 28-AWL-25 is 
within 6 years since the most recent inspection was performed in 
accordance with AWL No. 28-AWL-25, or within 6 years since the 
actions specified in Boeing Alert Service Bulletin 757-28A0088 were 
accomplished, whichever is later.
    (i) AWL No. 28-AWL-23, Motor Operated Valve (MOV) Actuator--
Lightning and Fault

[[Page 52309]]

Current Protection Electrical Bond, as specified in Boeing 757 
Maintenance Planning Data (MPD) Document, Section 9, Airworthiness 
Limitations (AWLs) and Certification Maintenance Requirements 
(CMRs), D622N001-9, Revision May 2018.
    (ii) AWL No. 28-AWL-24, MOV Actuator--Electrical Design Feature, 
as specified in Boeing 757 Maintenance Planning Data (MPD) Document, 
Section 9, Airworthiness Limitations (AWLs) and Certification 
Maintenance Requirements (CMRs), D622N001-9, Revision May 2018.
    (iii) AWL No. 28-AWL-25, Motor Operated Valve (MOV) Actuator--
Lightning and Fault Current Protection Electrical Bond, as specified 
in Boeing 757 Maintenance Planning Data (MPD) Document, Section 9, 
Airworthiness Limitations (AWLs) and Certification Maintenance 
Requirements (CMRs), D622N001-9, Revision May 2018.
    (3) For airplanes identified in paragraph (c)(3) of this AD with 
an original certificate of airworthiness or original export 
certificate of airworthiness issued on or before the effective date 
of this AD: Prior to or concurrently with the actions required by 
paragraph (h)(3) of this AD, revise the maintenance or inspection 
program, as applicable, to add the AWLs specified in paragraphs 
(i)(3)(i) and (i)(3)(ii) of this AD.
    (i) AWL No. 28-AWL-23, Motor Operated Valve (MOV) Actuator--
Lightning and Fault Current Protection Electrical Bond, as specified 
in Boeing 767-200/300/300F/400 Special Compliance Items/
Airworthiness Limitations, D622T001-9-04, Revision March 2018.
    (ii) AWL No. 28-AWL-24, Motor Operated Valve (MOV) Actuator--
Electrical Design Feature, as specified in Boeing 767-200/300/300F/
400 Special Compliance Items/Airworthiness Limitations, D622T001-9-
04, Revision March 2018.

(j) Maintenance or Inspection Program Revision for Parts Installation 
Prohibition

    (1) For Model 737-600, -700, -700C, -800, -900, and -900ER 
series airplanes: After accomplishing the actions required by 
paragraphs (g)(1), (h)(1), and (i)(1) of this AD, as applicable, on 
all airplanes in an operator's fleet, and within 8 years after the 
effective date of the AD, revise the maintenance or inspection 
program, as applicable, by incorporating the AWL specified in figure 
1 to paragraph (j)(1) of this AD.
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[GRAPHIC] [TIFF OMITTED] TR17OC18.019

    (2) For airplanes identified in paragraph (c)(2) of this AD: 
After accomplishing the actions required by paragraphs (g)(2), 
(h)(2), and (i)(2) of this AD, as applicable, on all airplanes in an 
operator's fleet, and within 8 years after the effective date of the 
AD, revise the maintenance or inspection program, as applicable, by 
incorporating the AWL specified in figure 2 to paragraph (j)(2) of 
this AD.

[[Page 52310]]

[GRAPHIC] [TIFF OMITTED] TR17OC18.020

    (3) For airplanes identified in paragraph (c)(3) of this AD: 
After accomplishing the actions required by paragraphs (g)(2), 
(h)(3), and (i)(3) of this AD, as applicable, on all airplanes in an 
operator's fleet, and within 8 years after the effective date of the 
AD, revise the maintenance or inspection program, as applicable, by 
incorporating the AWL specified in figure 3 to paragraph (j)(3) of 
this AD.
[GRAPHIC] [TIFF OMITTED] TR17OC18.021

    (4) For airplanes identified in paragraph (c)(1) of this AD, 
excluding Model 737-600, -700, -700C, -800, -900, and -900ER series 
airplanes: Within 30 days since the date of issuance of the original 
standard airworthiness certificate or the date of issuance of the 
original export certificate of airworthiness, or within 30 days 
after the effective date of this AD, whichever is later, revise the 
maintenance or inspection program, as applicable, by incorporating 
the AWL specified in figure 4 to paragraph (j)(4) of this AD.

[[Page 52311]]

[GRAPHIC] [TIFF OMITTED] TR17OC18.022

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 (k) No Alternative Actions, Intervals, and Critical Design 
Configuration Control Limitations (CDCCLs)

    (1) After the maintenance or inspection program has been revised 
as required by paragraph (i) of this AD, no alternative actions 
(e.g., inspections), intervals, or CDCCLs, may be used unless the 
actions, intervals, and CDCCLs are approved as an alternative method 
of compliance (AMOC) in accordance with the procedures specified in 
paragraph (o) of this AD.
    (2) After the maintenance or inspection program has been revised 
as required by paragraph (j) of this AD, no alternative actions 
(e.g., inspections), intervals, or CDCCLs, may be used unless the 
actions, intervals, and CDCCLs are approved as an AMOC in accordance 
with the procedures specified in paragraph (o) of this AD.

(l) Parts Installation Prohibition

    (1) For Model 737-600, -700, -700C, -800, -900, and -900ER 
series airplanes: As of the effective date of this AD, no person may 
replace an MOV actuator having P/N MA30A1017 (Boeing P/N S343T003-
76) with an MOV actuator having P/N MA20A2027 or P/N MA30A1001 
(Boeing P/N S343T003-56 or Boeing P/N S343T003-66, respectively) for 
the left engine and right engine fuel shutoff valves.
    (2) For airplanes identified in paragraph (c)(2) of this AD: As 
of the effective date of this AD, no person may replace an MOV 
actuator having P/N AV-31-1 (Boeing P/N S343T003-111), P/N MA11A1265 
(Boeing P/N S343T003-14), P/N MA11A1265-1 (Boeing P/N S343T003-41), 
or P/N MA30A1017 (Boeing P/N S343T003-76) with an MOV actuator 
having P/N MA30A1001 (Boeing P/N S343T003-66) or P/N MA20A2027 
(Boeing P/N S343T003-56) for the left engine and right engine fuel 
shutoff valves and the APU fuel shutoff valve.
    (3) For airplanes identified in paragraph (c)(3) of this AD: As 
of the effective date of this AD, no person may replace an MOV 
actuator having P/N AV-31-1 (Boeing P/N S343T003-111), P/N MA11A1265 
(Boeing P/N S343T003-14), P/N MA11A1265-1 (Boeing P/N S343T003-41), 
or P/N MA30A1017 (Boeing P/N S343T003-76) with an MOV actuator 
having P/N MA30A1001 (Boeing P/N S343T003-66) or P/N MA20A2027 
(Boeing P/N S343T003-56) for the left engine and right engine fuel 
shutoff valves and the APU fuel shutoff valve.

[[Page 52312]]

    (4) For airplanes identified in paragraph (c)(1) of this AD, 
excluding Model 737-600, -700, -700C, -800, -900, and -900ER series 
airplanes: As of the effective date of this AD, no person may 
install an MOV actuator having P/N MA20A1001-1 (Boeing P/N S343T003-
39) or replace an MOV actuator with an MOV actuator having P/N 
MA20A2027 or P/N MA30A1001 (Boeing P/N S343T003-56 or Boeing P/N 
S343T003-66, respectively) for the left engine and right engine fuel 
shutoff valves.

(m) Terminating Action

    (1) For Model 737-600, -700, -700C, -800, -900, and -900ER 
series airplanes: Accomplishing the actions required by paragraph 
(j)(l) of this AD terminates the requirements of paragraph (l)(1) of 
this AD and all requirements of AD 2015-21-10.
    (2) For airplanes identified in paragraph (c)(2) of this AD: 
Accomplishing the action required by paragraph (j)(2) of this AD 
terminates the requirements of paragraph (l)(2) of this AD and all 
requirements of AD 2015-19-04.
    (3) For airplanes identified in paragraph (c)(3) of this AD: 
Accomplishing the action required by paragraph (j)(3) of this AD 
terminates the requirements of paragraph (l)(3) of this AD and all 
requirements of AD 2015-21-09.
    (4) For airplanes identified in paragraph (c)(1) of this AD, 
excluding Model 737-600, -700, -700C, -800, -900, and -900ER series 
airplanes: Accomplishing the action required by paragraph (j)(4) of 
this AD terminates the requirements of paragraph (l)(4) of this AD.

(n) Credit for Previous Actions

    (1) This paragraph provides credit for the actions specified in 
paragraph (g)(2) or (h)(2) of this AD, as applicable, if those 
actions were performed before the effective date of this AD using 
Boeing Special Attention Service Bulletin 757-28-0138, dated May 18, 
2016.
    (2) This paragraph provides credit for the actions specified in 
paragraph (g)(2) or (h)(3) of this AD, as applicable, if those 
actions were performed before the effective date of this AD using 
Boeing Service Bulletin 767-28-0115, dated September 10, 2015.
    (3) For Model 737-600, -700, -700C, -800, -900, and -900ER 
series airplanes with an original certificate of airworthiness or 
original export certificate of airworthiness issued on or before the 
effective date of this AD, this paragraph provides credit for the 
actions specified in paragraph (i)(1) of this AD if those actions 
were performed before the effective date of this AD using Boeing 
737-600/700/700C/800/900/900ER Special Compliance Items/
Airworthiness Limitations, D626A001-9-04, Revision July 2016, 
Revision September 2016, Revision January 2017, Revision April 2018, 
or Revision May 2018; or Boeing 737-600/700/700C/800/900/900ER 
Maintenance Planning Data (MPD) Document, Section 9, Airworthiness 
Limitations (AWLs) and Certification Maintenance Requirements 
(CMRs), D626A001-CMR, Revision October 2014, Revision November 2014, 
Revision January 2015, or Revision April 2016.
    (4) For airplanes identified in paragraph (c)(2) of this AD, 
this paragraph provides credit for the actions specified in 
paragraph (i)(2) of this AD if those actions were performed before 
the effective date of this AD using Boeing 757 Maintenance Planning 
Data (MPD) Document, Section 9, Airworthiness Limitations (AWLs) and 
Certification Maintenance Requirements (CMRs), D622N001-9, Revision 
January 2016, Revision July 2016, or Revision February 2017.
    (5) For airplanes identified in paragraph (c)(3) of this AD with 
an original certificate of airworthiness or original export 
certificate of airworthiness issued on or before the effective date 
of this AD, this paragraph provides credit for the actions specified 
in paragraph (i)(3) of this AD if those actions were performed 
before the effective date of this AD using Boeing 767 Special 
Compliance Items/Airworthiness Limitations, D622T001-9-04, Revision 
July 2015, Revision March 2016, Revision May 2016, Revision May 2016 
R1, or Revision June 2016; or Boeing 767-200/300/300F/400 Special 
Compliance Items/Airworthiness Limitations, D622T001-9-04, Revision 
January 2018.
    (6) For airplanes identified in paragraph (c)(3) of this AD with 
an original certificate of airworthiness or original export 
certificate of airworthiness issued on or before the effective date 
of this AD, this paragraph provides credit for the actions specified 
in paragraph (i)(3)(ii) of this AD if those actions were performed 
before the effective date of this AD using Boeing 767 Special 
Compliance Items/Airworthiness Limitations, D622T001-9-04, Revision 
October 2014.

(o) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle ACO Branch, FAA, has the authority to 
approve AMOCs for this AD, if requested using the procedures found 
in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request 
to your principal inspector or local Flight Standards District 
Office, as appropriate. If sending information directly to the 
manager of the certification office, send it to the attention of the 
person identified in paragraph (p)(1) of this AD. Information may be 
emailed to: [email protected].
    (2) Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office.
    (3) An AMOC that provides an acceptable level of safety may be 
used for any repair, modification, or alteration required by this AD 
if it is approved by the Boeing Commercial Airplanes Organization 
Designation Authorization (ODA) that has been authorized by the 
Manager, Seattle ACO Branch, to make those findings. To be approved, 
the repair method, modification deviation, or alteration deviation 
must meet the certification basis of the airplane, and the approval 
must specifically refer to this AD.
    (4) For service information that contains steps that are labeled 
as Required for Compliance (RC), the provisions of paragraphs 
(o)(4)(i) and (o)(4)(ii) of this AD apply.
    (i) The steps labeled as RC, including substeps under an RC step 
and any figures identified in an RC step, must be done to comply 
with the AD. If a step or substep is labeled ``RC Exempt,'' then the 
RC requirement is removed from that step or substep. An AMOC is 
required for any deviations to RC steps, including substeps and 
identified figures.
    (ii) Steps not labeled as RC may be deviated from using accepted 
methods in accordance with the operator's maintenance or inspection 
program without obtaining approval of an AMOC, provided the RC 
steps, including substeps and identified figures, can still be done 
as specified, and the airplane can be put back in an airworthy 
condition.

(p) Related Information

    (1) For more information about this AD, contact Tak Kobayashi, 
Aerospace Engineer, Propulsion Section, FAA, Seattle ACO Branch, 
2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-
3553; email: [email protected].
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (q)(3) and (q)(4) of this AD.

(q) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) Boeing 737-600/700/700C/800/900/900ER Special Compliance 
Items/Airworthiness Limitations, D626A001-9-04, Revision June 2018.
    (ii) Boeing 757 Maintenance Planning Data (MPD) Document, 
Section 9, Airworthiness Limitations (AWLs) and Certification 
Maintenance Requirements (CMRs), D622N001-9, Revision May 2018.
    (iii) Boeing 767-200/300/300F/400ER Special Compliance Items/
Airworthiness Limitations, D622T001-9-04, Revision March 2018.
    (iv) Boeing Service Bulletin 737-28-1314, dated November 17, 
2014.
    (v) Boeing Service Bulletin 767-28-0115, Revision 1, dated June 
2, 2016.
    (vi) Boeing Special Attention Service Bulletin 757-28-0138, 
Revision 1, dated June 19, 2017.
    (3) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Contractual & Data Services 
(C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 90740-
5600; telephone: 562-797-1717; internet: https://www.myboeingfleet.com.
    (4) You may view this service information at the FAA, Transport 
Standards Branch, 2200 South 216th St., Des Moines, WA. For 
information on the availability of this material at the FAA, call 
206-231-3195.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call

[[Page 52313]]

202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Des Moines, Washington, on September 14, 2018.
John P. Piccola,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. R1-2018-21460 Filed 10-16-18; 8:45 am]
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