[Federal Register Volume 83, Number 158 (Wednesday, August 15, 2018)]
[Rules and Regulations]
[Pages 40445-40451]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-17483]


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

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0028; Product Identifier 2017-NM-143-AD; Amendment 
39-19356; AD 2018-17-02]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-
600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This AD was 
prompted by a determination that the safe life limits of the horizontal 
stabilizer trim actuator (HSTA) attachment pins and trunnions were not 
listed in certain airworthiness limitations (AWLs) and that the HSTA 
attachment pins and trunnions were not serialized. This AD requires 
revision of the maintenance or inspection program, as applicable, to 
include the latest revision of the AWLs, serialization of the HSTA 
attachment pins and trunnions, and repair or replacement of damaged 
HSTA attachment pins and

[[Page 40446]]

trunnions. We are issuing this AD to address the unsafe condition on 
these products.

DATES: This AD is effective September 19, 2018.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of September 19, 
2018.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center North 
America toll-free telephone 1-866-538-1247 or direct-dial telephone 1-
514-855-2999; fax 514-855-7401; email [email protected]; 
internet http://www.bombardier.com. You may view this referenced 
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-2018-0028.

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-2018-
0028; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this AD, the regulatory evaluation, any comments received, and 
other information. The street address for the Docket Office (telephone 
800-647-5527) is Docket Management Facility, 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: Aziz Ahmed, Aerospace Engineer, 
Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600 
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7239; 
fax 516-794-5531; 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 certain Bombardier, Inc., 
Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-3A, 
601-3R, and 604 Variants) airplanes. The NPRM published in the Federal 
Register on February 8, 2018 (83 FR 5587) (``the NPRM''). The NPRM was 
prompted by a determination that the safe life limits of the HSTA 
attachment pins and trunnions were not listed in certain AWLs and that 
the HSTA attachment pins and trunnions were not serialized. The NPRM 
proposed to require revision of the maintenance or inspection program, 
as applicable, to include the latest revision of the AWLs, 
serialization of the HSTA attachment pins and trunnions, and repair or 
replacement of damaged HSTA attachment pins and trunnions. We are 
issuing this AD to address failure of the HSTA attachment pins and 
trunnions, which could lead to a disconnect of the horizontal 
stabilizer and subsequent loss of the airplane.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian AD CF-2017-24, dated July 12, 
2017 (referred to after this as the Mandatory Continuing Airworthiness 
Information, or ``the MCAI''), to correct an unsafe condition for 
certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), 
and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. The MCAI 
states:

    During a review of the Horizontal Stabilizer Trim Actuator 
(HSTA) system, it was discovered that the safe life limits of the 
HSTA attachment pins and trunnions were not listed in the 
Airworthiness Limitation (AWL) Section of the Instructions for 
Continued Airworthiness. Also, the HSTA attachment pins and 
trunnions were not serialized making it impossible to keep accurate 
records of the life of these parts. Failure of these pins and 
trunnions could lead to a disconnect of the horizontal stabilizer 
and subsequent loss of the aeroplane.
    This [Canadian] AD mandates the incorporation of AWL tasks into 
the maintenance schedule and serialization of HSTA attachment pins 
and trunnions. Some aircraft require AWL tasks and serialization of 
the attachment pins only, while others require AWL tasks and 
serialization of the trunnions and attachment pins [and repair or 
replacement if damaged (including linear scratches, pits, spalling, 
dents, or surface texture variations)].

    You may examine the MCAI in the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0028.

Comments

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

Request To Allow Using Later Revisions of the Service Information

    NetJets requested that paragraph (h) of the proposed AD be revised 
to specify the latest time limits/maintenance checks (TLMC) revisions. 
NetJets noted that some of the TLMC documents referenced in the 
proposed AD have been revised. NetJets also requested that we revise 
the proposed AD so that operators can use later approved revisions of 
the TLMC documents to show compliance without requesting an alternative 
method of compliance (AMOC).
    We partially agree with the commenter's request. In this 
circumstance, the specific tasks required by this AD have not changed 
in the latest available service information from the earlier revisions 
of the service information specified in the NPRM. We have therefore 
revised this AD to refer to the latest available service information 
and revised paragraph (k) of this AD to provide credit for actions done 
using earlier revisions of certain service information. However, we may 
not refer to any document that does not yet exist. In general terms, we 
are required by Office of the Federal Register (OFR) regulations to 
either publish the service document contents as part of the actual AD 
language; or submit the service document to the OFR for approval as 
``referenced'' material, in which case we may only refer to such 
material in the text of an AD. The AD may refer to the service document 
only if the OFR approved it for ``incorporation by reference.'' See 1 
CFR part 51.
    To allow operators to use later revisions of the referenced 
document (issued after publication of the AD), either we must revise 
the AD to reference specific later revisions, or operators must request 
approval to use later revisions as an AMOC with this AD under the 
provisions of paragraph (m)(1) of this AD. We cannot reference a 
specific revision not yet in existence so the only option is to request 
an AMOC.

Request To Use a Service Bulletin Instead of a TLMC

    Disney Aviation Group requested that the proposed AD be revised to 
use actions in a service bulletin instead of the TLMC for any required 
inspections. The commenter noted that most operators have an electronic 
subscription that automatically gives them the newest revision of the 
TLMC documents. The commenter stated that since the TLMCs have been 
updated since the draft AD was issued, operators

[[Page 40447]]

will not be able to comply with the AD, and will have to request an 
AMOC. The commenter noted that service bulletins are not revised as 
often as TLMC documents, and when they are updated they are not 
superseded by future revisions. The commenter pointed out that other 
manufacturers issue service bulletins with similar requirements and the 
related ADs require those service bulletins.
    We disagree with the commenter's request. As noted previously, we 
have revised this AD to refer to the latest available TLMC documents. 
We cannot, however, mandate how a given manufacturer makes their 
service information available. Since Bombardier, Inc. has chosen to 
provide the TLMCs in a separate document, rather than a service 
bulletin, that is what operators must use to show compliance with this 
AD. We have therefore not changed this AD in this regard.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this AD 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 
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued the following service information.
    The following service information describes procedures for 
serializing the HSTA attachment pins and trunnions. These documents are 
distinct since they apply to different airplane models in different 
configurations.
     Bombardier Service Bulletin 600-0760, Revision 01, dated 
April 21, 2017.
     Bombardier Service Bulletin 601-0626, Revision 01, dated 
April 21, 2017.
     Bombardier Service Bulletin 604-27-034, Revision 01, dated 
April 21, 2017.
     Bombardier Service Bulletin 605-27-005, Revision 01, dated 
April 21, 2017.
    The following service information identifies airworthiness 
limitation tasks for revising the life limits for HSTA attachment pins 
and trunnions. These documents are distinct since they apply to 
different airplane models in different configurations.
     Section 5-10-10, ``Time Limits (Structural),'' of Section 
5-10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 600 
Time Limits/Maintenance Checks, Publication No. PSP 605, Revision 39, 
dated January 8, 2018.
     Section 5-10-10, ``Time Limits (Structural)--Pre SB 601-
0280,'' of Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, Publication 
No. PSP 601-5, Revision 46, dated January 8, 2018.
     Section 5-10-11, ``Time Limits (Structural)--Post SB 601-
0280,'' of Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, Publication 
No. PSP 601-5, Revision 46, dated January 8, 2018.
     Section 5-10-12, ``Time Limits (Structural)--Post SB 601-
0360,'' of Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, Publication 
No. PSP 601-5, Revision 46, dated January 8, 2018.
     Section 5-10-10, ``Time Limits (Structural),'' of Section 
5-10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 601 
Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 
42, dated January 8, 2018.
     Section 5-10-11, ``Time Limits (Structural),'' of Section 
5-10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 601 
Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 
42, dated January 8, 2018.
     Section 5-10-12, ``Time Limits (Structural),'' of Section 
5-10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 601 
Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 
42, dated January 8, 2018.
    The following service information describes life limits for certain 
HSTA attachment pins and trunnion supports. These documents are 
distinct since they apply to different airplane models in different 
configurations.
     Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 604 CL-604 Time Limits/Maintenance Checks, Part 2 
Airworthiness Limitations, Revision 30, dated December 4, 2017. This 
service information describes, among other tasks: Task 27-42-01-108, 
``Discard of the Horizontal-Stabilizer Trim-Actuator (HSTA) Trunnion 
Support; Part No. 601R92386-1/-3;'' and Task 27-42-01-112, ``Discard of 
the Horizontal-Stabilizer Trim-Actuator (HSTA) Upper and Lower 
Attachment Pins; Upper Pin Part No. 600-92384-5/-7 or 601R92310-1/-3 
and Lower Pin Part No. 600-92383-5/-7 or 601R92309-1/-3.''
     Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 605 CL-605 Time Limits/Maintenance Checks, Part 2 
Airworthiness Limitations, Revision 18, dated December 4, 2017. This 
service information describes, among other tasks: Task 27-42-01-108, 
``Discard of the Horizontal-Stabilizer Trim-Actuator (HSTA) Trunnion 
Support; Part No. 601R92386-1/-3;'' and Task 27-42-01-112, ``Discard of 
the Horizontal-Stabilizer Trim-Actuator (HSTA) Upper and Lower 
Attachment Pins; Upper Pin Part No. 600-92384-5/-7 or 601R92310-1/-3 
and Lower Pin Part No. 600-92383-5/-7 or 601R92309-1/ -3.''
     Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 650 CL-650 Time Limits/Maintenance Checks, Part 2 
Airworthiness Limitations, Revision 5, dated December 4, 2017. This 
service information describes, among other tasks: Task 27-42-01-108, 
``Discard of the Horizontal-Stabilizer Trim-Actuator (HSTA) Trunnion 
Support; Part No. 601R92386-1/-3;'' and Task 27-42-01-112, ``Discard of 
the Horizontal-Stabilizer Trim-Actuator (HSTA) Upper and Lower 
Attachment Pins; Upper Pin Part No. 600-92384-5/-7 or 601R92310-1/-3 
and Lower Pin Part No. 600-92383-5/-7 or 601R92309-1/-3.''
    The following service information describes procedures for 
identifying damage to HSTA attachment pins and trunnions, and repair or 
replacement instructions. These documents are distinct since they apply 
to different airplane models in different configurations.
     Bombardier Repair Engineering Order (REO) 600-27-42-002, 
``General Repair--HSTA Upper and Lower Pins,'' dated December 15, 2016.
     Bombardier Repair Engineering Order (REO) 604-27-42-011, 
``General Repair--HSTA Trunnion P/N 601R92386-1/-3,'' dated December 
15, 2016.
     Bombardier Repair Engineering Order (REO) 604-27-42-012, 
``General Repair--HSTA Upper and Lower Pins,'' dated December 15, 2016.
    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.

[[Page 40448]]

Costs of Compliance

    We estimate that this AD affects 137 airplanes of U.S. registry. We 
estimate the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
            Action                 Labor cost       Parts cost       Cost per product     Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Serialization................  Up to 20 work-               $449  Up to $2,149..........  Up to $294,413.
                                hours x $85 per
                                hour = Up to
                                $1,700.
----------------------------------------------------------------------------------------------------------------

    We have determined that revising the maintenance or inspection 
program 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 fleet(s), 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).
    We have received no definitive data that would enable us to provide 
cost estimates for the on-condition actions specified in this AD.

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 to 
the Director of the System Oversight Division.

Regulatory Findings

    We determined that 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 the 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.


Sec.  39.13   [Amended]

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

2018-17-02 Bombardier, Inc.: Amendment 39-19356; Docket No. FAA-
2018-0028; Product Identifier 2017-NM-143-AD.

(a) Effective Date

    This AD is effective September 19, 2018.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to the Bombardier, Inc., airplanes identified in 
paragraphs (c)(1) through (c)(4) of this AD, certificated in any 
category.
    (1) Model CL-600-1A11 (600) airplanes, serial numbers 1002 and 
1004 through 1085 inclusive.
    (2) Model CL-600-2A12 (601) airplanes, serial numbers 3001 
through 3066 inclusive.
    (3) Model CL-600-2B16 (601-3A and 601-3R Variants) airplanes, 
serial numbers 5001 through 5194 inclusive.
    (4) Model CL-600-2B16 (604 Variant) airplanes, serial numbers 
5301 through 5665 inclusive, 5701 through 5990 inclusive, and 6050 
and subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 27, Flight 
controls.

(e) Reason

    This AD was prompted by a determination that the safe life 
limits of the horizontal stabilizer trim actuator (HSTA) attachment 
pins and trunnions were not listed in certain airworthiness 
limitations (AWLs) and that the HSTA attachment pins and trunnions 
were not serialized. We are issuing this AD to prevent failure of 
the HSTA attachment pins and trunnions, which could lead to a 
disconnect of the horizontal stabilizer and subsequent loss of the 
airplane.

(f) Compliance

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

(g) Maintenance or Inspection Program Revision for Model CL-600-1A11 
(600), Model CL-600-2A12 (601), and Model CL-600-2B16 (601-3A and 601-
3R Variants) Airplanes

    For airplanes identified in paragraphs (c)(1), (c)(2), and 
(c)(3) of this AD: Within 60 days after the effective date of this 
AD, revise the maintenance or inspection program, as applicable, to 
incorporate the life limit AWL tasks identified in table 1 to 
paragraph (g) of this AD, as specified in the applicable service 
information identified in paragraph (g)(1), (g)(2), or (g)(3) of 
this AD. The initial compliance time is within 500 flight cycles of 
the effective date of this AD, or at the applicable time (in terms 
of landings) specified in the applicable AWL task identified in 
table 1 to paragraph (g) of this AD, whichever occurs later.

[[Page 40449]]

    (1) For Model CL-600-1A11 (600) airplanes, Section 5-10-10, 
``Time Limits (Structural),'' of Section 5-10-00, ``Airworthiness 
Limitations,'' of Bombardier Challenger 600 Time Limits/Maintenance 
Checks, Publication No. PSP 605, Revision 39, dated January 8, 2018.
    (2) For Model CL-600-2A12 (601) airplanes, the applicable task 
specified in paragraph (g)(2)(i), (g)(2)(ii), or (g)(2)(iii) of this 
AD, as identified in Section 5-10-00, ``Airworthiness Limitations,'' 
of Bombardier Challenger 601 Time Limits/Maintenance Checks, 
Publication No. PSP 601-5, Revision 46, dated January 8, 2018.
    (i) Section 5-10-10, ``Time Limits (Structural)--Pre SB 601-
0280.''
    (ii) Section 5-10-11, ``Time Limits (Structural)--Post SB 601-
0280.''
    (iii) Section 5-10-12, ``Time Limits (Structural)--Post SB 601-
0360.''
    (3) For Model CL-600-2B16 (601-3A and 601-3R Variants) 
airplanes, the applicable task specified in paragraph (g)(3)(i), 
(g)(3)(ii), or (g)(3)(iii) of this AD, as identified in Section 5-
10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 601 
Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 
42, dated January 8, 2018.
    (i) Section 5-10-10, ``Time Limits (Structural).''
    (ii) Section 5-10-11, ``Time Limits (Structural).''
    (iii) Section 5-10-12, ``Time Limits (Structural).''
    [GRAPHIC] [TIFF OMITTED] TR15AU18.002
    
(h) Maintenance or Inspection Program Revision for Model CL-600-2B16 
(604 Variant) Airplanes

    For airplanes identified in paragraph (c)(4) of this AD: Within 
60 days after the effective date of this AD, revise the maintenance 
or inspection program, as applicable, to incorporate new life limit 
AWL Task 27-42-01-108, ``Discard of the Horizontal-Stabilizer Trim-
Actuator (HSTA) Trunnion Support; Part No. 601R92386-1/-3,'' and 
Task 27-42-01-112, ``Discard of the Horizontal-Stabilizer Trim-
Actuator (HSTA) Upper and Lower Attachment Pins; Upper Pin Part No. 
600-92384-5/-7 or 601R92310-1/-3 and Lower Pin Part No. 600-92383-5/
-7 or 601R92309-1/-3,'' as specified in the applicable time limits 
maintenance checks (TLMC) manuals identified in paragraphs (h)(1), 
(h)(2), and (h)(3) of this AD. The initial compliance time is within 
500 flight cycles after the effective date of this AD, or at the 
applicable time specified in the applicable AWL task, whichever 
occurs later.
    (1) For airplanes having serial numbers 5301 through 5665 
inclusive: Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 604 CL-604 Time Limits/Maintenance Checks, 
Part 2 Airworthiness Limitations, Revision 30, dated December 4, 
2017.
    (2) For airplanes having serial numbers 5701 through 5990 
inclusive: Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 605 CL-605 Time Limits/Maintenance Checks, 
Part 2 Airworthiness Limitations, Revision 18, dated December 4, 
2017.
    (3) For airplanes having serial numbers 6050 and subsequent: 
Section 5-10-10, ``Life Limits (Structures),'' of Bombardier 
Challenger 650 CL-650 Time Limits/Maintenance Checks, Part 2 
Airworthiness Limitations, Revision 5, dated December 4, 2017.

(i) Serialization of HSTA Attachment Pins and Trunnions

    For airplanes identified in table 2 to paragraph (i) of this AD: 
Within 48 months after the effective date of this AD, or prior to 
performing a maintenance task required by paragraph (g) or (h) of 
this AD, as applicable, whichever occurs first, do a general visual 
inspection for damage (including linear scratches, pits, spalling, 
dents, or surface texture variations), and add serial numbers to the 
HSTA trunnions, lower attachment pin, and upper attachment pin, as 
applicable, in accordance with the Accomplishment Instructions of 
the applicable service information specified in table 2 to paragraph 
(i) of this AD. If any damage to the HSTA trunnions or attachment 
pins is found, repair the damage in accordance with the applicable 
service information specified in paragraph (i)(1), (i)(2), or (i)(3) 
of this AD; or using a method approved by the Manager, New York ACO 
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or 
Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If 
approved by the DAO, the approval must include the DAO-authorized 
signature. If the damaged HSTA trunnion or attachment pin cannot be 
repaired in accordance with the applicable service information 
specified in paragraph (i)(1), (i)(2), or (i)(3) of this AD: Before 
further flight, replace the damaged HSTA trunnion or attachment pin 
with a serviceable serialized HSTA trunnion or attachment pin, in 
accordance with the applicable service information specified in 
table 2 to paragraph (i) of this AD.
    (1) Bombardier Repair Engineering Order (REO) 600-27-42-002, 
``General Repair--HSTA Upper and Lower Pins,'' dated December 15, 
2016.
    (2) Bombardier Repair Engineering Order (REO) 604-27-42-011, 
``General Repair--HSTA Trunnion P/N 601R92386-1/-3,'' dated December 
15, 2016.
    (3) Bombardier Repair Engineering Order (REO) 604-27-42-012, 
``General Repair--HSTA Upper and Lower Pins,'' dated December 15, 
2016.
BILLING CODE 4910-13-P

[[Page 40450]]

[GRAPHIC] [TIFF OMITTED] TR15AU18.003

BILLING CODE 4910-13-C

(j) No Alternative Actions or Intervals

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

(k) Credit for Previous Actions

    (1) This paragraph provides credit for actions required by 
paragraph (g) of this AD, if those actions were performed before the 
effective date of this AD using the service information specified in 
paragraph (k)(1)(i), (k)(1)(ii), or (k)(1)(iii) of this AD, as 
applicable.
    (i) Section 5-10-10, ``Time Limits (Structural),'' of Section 5-
10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 600 
Time Limits/Maintenance Checks, Publication No. PSP 605, Revision 
38, dated March 28, 2017.
    (ii) Section 5-10-10, ``Time Limits (Structural)--Pre SB 601-
0280,'' of Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, 
Publication No. PSP 601-5, Revision 45, dated March 28, 2017.
    (iii) Section 5-10-11, ``Time Limits (Structural)--Post SB 601-
0280,'' of Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, 
Publication No. PSP 601-5, Revision 45, dated March 28, 2017.
    (iv) Section 5-10-12, ``Time Limits (Structural)--Post SB 601-
0360,'' of Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, 
Publication No. PSP 601-5, Revision 45, dated March 28, 2017.
    (v) Section 5-10-10, ``Time Limits (Structural),'' of Section 5-
10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 601 
Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 
41, dated March 28, 2017.
    (vi) Section 5-10-11, ``Time Limits (Structural),'' of Section 
5-10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 601 
Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 
41, dated March 28, 2017.
    (vii) Section 5-10-12, ``Time Limits (Structural),'' of Section 
5-10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 601 
Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 
41, dated March 28, 2017.
    (2) This paragraph provides credit for actions required by 
paragraph (h) of this AD, if those actions were performed before the 
effective date of this AD using the service information specified in 
paragraph (k)(2)(i), (k)(2)(ii), or (k)(2)(iii) of this AD, as 
applicable.
    (i) Section 5-10-10, ``Life Limits (Structures),'' of Bombardier 
Challenger 604 CL-604 Time Limits/Maintenance Checks, Part 2 
Airworthiness Limitations, Revision 29, dated June 16, 2017.
    (ii) Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 605 CL-605 Time Limits/Maintenance Checks, 
Part 2 Airworthiness Limitations, Revision 17, dated June 16, 2017.
    (iii) Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 650 CL-650 Time Limits/Maintenance Checks, 
Part 2 Airworthiness Limitations, Revision 4, dated June 16, 2017.
    (3) This paragraph provides credit for actions required by 
paragraph (i) of this AD, if those actions were performed before the 
effective date of this AD using the service information specified in 
paragraph (k)(3)(i), (k)(3)(ii), (k)(3)(iii), or (k)(3)(iv) of this 
AD, as applicable.
    (i) Bombardier Service Bulletin 600-0760, dated February 25, 
2013.
    (ii) Bombardier Service Bulletin 601-0626, dated February 25, 
2013.
    (iii) Bombardier Service Bulletin 604-27-034, dated February 25, 
2013.
    (iv) Bombardier Service Bulletin 605-27-005, dated February 25, 
2013.

[[Page 40451]]

(l) Parts Installation Limitations

    (1) As of the effective date of this AD, no person may install, 
on any airplane, an HSTA attachment pin, unless the pin has a serial 
number.
    (2) As of the effective date of this AD, no person may install, 
on any Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplane 
with serial number 5301 and subsequent, an HSTA trunnion, unless the 
HSTA trunnion has a serial number.

(m) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York 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 ATTN: Program Manager, Continuing Operational 
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. 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.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain corrective actions from a manufacturer, the action must be 
accomplished using a method approved by the Manager, New York ACO 
Branch, FAA; or TCCA; or Bombardier, Inc.'s TCCA DAO. If approved by 
the DAO, the approval must include the DAO-authorized signature.

(n) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian AD CF-2017-24, dated July 12, 2017, for related 
information. This MCAI may be found in the AD docket on the internet 
at http://www.regulations.gov by searching for and locating Docket 
No. FAA-2018-0028.
    (2) For more information about this AD, contact Aziz Ahmed, 
Aerospace Engineer, Airframe and Mechanical Systems Section, FAA, 
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7239; fax 516-794-5531; email [email protected].
    (3) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (o)(3) and (o)(4) of this AD.

(o) 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 this AD specifies otherwise.
    (i) Bombardier Repair Engineering Order (REO) 600-27-42-002, 
``General Repair--HSTA Upper and Lower Pins,'' dated December 15, 
2016.
    (ii) Bombardier Repair Engineering Order (REO) 604-27-42-011, 
``General Repair--HSTA Trunnion P/N 601R92386-1/-3,'' dated December 
15, 2016.
    (iii) Bombardier Repair Engineering Order (REO) 604-27-42-012, 
``General Repair--HSTA Upper and Lower Pins,'' dated December 15, 
2016.
    (iv) Bombardier Service Bulletin 600-0760, Revision 01, dated 
April 21, 2017.
    (v) Bombardier Service Bulletin 601-0626, Revision 01, dated 
April 21, 2017.
    (vi) Bombardier Service Bulletin 604-27-034, Revision 01, dated 
April 21, 2017.
    (vii) Bombardier Service Bulletin 605-27-005, Revision 01, dated 
April 21, 2017.
    (viii) Section 5-10-10, ``Time Limits (Structural),'' of Section 
5-10-00, ``Airworthiness Limitations,'' of Bombardier Challenger 600 
Time Limits/Maintenance Checks, Publication No. PSP 605, Revision 
39, dated January 8, 2018.
    (ix) Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, 
Publication No. PSP 601-5, Revision 46, dated January 8, 2018.
    (A) Section 5-10-10, ``Time Limits (Structural)--Pre SB 601-
0280.''
    (B) Section 5-10-11, ``Time Limits (Structural)--Post SB 601-
0280.''
    (C) Section 5-10-12, ``Time Limits (Structural)--Post SB 601-
0360.''
    (x) Section 5-10-00, ``Airworthiness Limitations,'' of 
Bombardier Challenger 601 Time Limits/Maintenance Checks, 
Publication No. PSP 601A-5, Revision 42, dated January 8, 2018.
    (A) Section 5-10-10, ``Time Limits (Structural).''
    (B) Section 5-10-11, ``Time Limits (Structural).''
    (C) Section 5-10-12, ``Time Limits (Structural).''
    (xi) Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 604 CL-604 Time Limits/Maintenance Checks, 
Part 2 Airworthiness Limitations, Revision 30, dated December 4, 
2017.
    (xii) Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 605 CL-605 Time Limits/Maintenance Checks, 
Part 2 Airworthiness Limitations, Revision 18, dated December 4, 
2017.
    (xiii) Section 5-10-10, ``Life Limits (Structures),'' of 
Bombardier Challenger 650 CL-650 Time Limits/Maintenance Checks, 
Part 2 Airworthiness Limitations, Revision 5, dated December 4, 
2017.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center 
North America toll-free telephone 1-866-538-1247 or direct-dial 
telephone 1-514-855-2999; fax 514-855-7401; email 
[email protected]; internet http://www.bombardier.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 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Des Moines, Washington, on August 5, 2018.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-17483 Filed 8-14-18; 8:45 am]
 BILLING CODE 4910-13-P