[Federal Register Volume 79, Number 133 (Friday, July 11, 2014)]
[Rules and Regulations]
[Pages 39961-39963]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2014-16244]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0386; Directorate Identifier 2014-NE-09-AD; 
Amendment 39-17897; AD 2014-12-52]
RIN 2120-AA64


Airworthiness Directives; Honeywell International Inc. (Type 
Certificate Previously Held by AlliedSignal Inc., Garrett Turbine 
Engine Company) Turbofan Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: We are superseding emergency airworthiness directive (AD) 
2014-12-52 for all Honeywell International Inc. TFE731-4, -4R, -5AR, -
5BR, -5R, -20R, -20AR, -20BR, -40, -40AR, -40R, -40BR, -50R, and -60 
turbofan engines. Emergency AD 2014-12-52 was sent previously to all 
known U.S. owners and operators of these engines. AD 2014-12-52 
required, before further flight, a review of the engine logbook 
maintenance records to determine if any affected engines are installed. 
AD 2014-12-52 also prohibited operation of an airplane with two or more 
affected engines that have 2nd stage low-pressure turbine (LPT2) blades 
with less than 250 operating hours since new. This AD retains the 
requirements of AD 2014-12-52 and clarifies the intent of the mandatory 
requirements. This AD was prompted by reports of LPT2 blade 
separations. We are issuing this AD to prevent LPT2 blade failure, 
multiple engine in-flight shutdowns, and damage to the airplane.

DATES: This AD is effective July 28, 2014.
    We must receive comments on this AD by August 25, 2014.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this AD, contact Honeywell 
International Inc., 111 S. 34th Street, Phoenix, AZ 85034-2802; phone: 
(800) 601-3099; Internet: http://www.myaerospace.com. You may view this 
service information at the FAA, Engine & Propeller Directorate, 12 New 
England Executive Park, Burlington, MA. For information on the 
availability of this material at the FAA, call (781) 238-7125.

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-2014-
0386; or in person at the Docket Operations Office 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 Operations Office 
(phone: 800-647-5527) is in the ADDRESSES section. Comments will be 
available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Joseph Costa, Aerospace Engineer, Los 
Angeles Aircraft Certification Office, FAA, Transport Airplane 
Directorate, 3960 Paramount Blvd., Lakewood, CA 90712-4137; phone: 562-
627-5246; fax: 562-627-5210; email: [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    On June 10, 2014, we issued Emergency AD 2014-12-52, which 
requires, before further flight, a review of the engine logbook 
maintenance records to determine if any affected engines are installed. 
Emergency AD 2014-12-52 also required for two-engine airplanes or for 
three-engine airplanes, that have two or more engines installed with 
LPT2 blades installed that have less than 250 operating hours since 
new, remove all affected engines before further flight. Emergency AD 
2014-12-52 was sent previously to all known U.S. owners and operators 
of these TFE731-4, -4R, -5AR, -5BR, -5R, -20R, -20AR, -20BR, -40, -
40AR, -40R, -40BR, -50R, and -60 turbofan engines. This action was 
prompted by reports of LPT2 blade separations. Analysis indicates the 
presence of casting anomalies at or near the root of the LPT2 blade. 
This condition, if not corrected, could result in LPT2 blade failure, 
multiple engine in-flight shutdowns, and damage to the airplane. We are 
superseding Emergency AD

[[Page 39962]]

2014-12-52 to clarify the intent of paragraphs (e) and (f) of this AD.

Relevant Service Information

    We reviewed Honeywell Alert Service Bulletin (ASB) No. TFE731-72-
A3792, dated June 5, 2014; ASB No. TFE731-72-A5242, dated June 5, 2014; 
and ASB No. TFE731-72-A5243, dated June 5, 2014. The service 
information describes procedures for identifying affected engines and 
follow-on actions.

FAA's Determination

    We are issuing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of the same type design.

AD Requirements

    This AD requires, before further flight, a review of the engine 
logbook maintenance records to determine if any affected engines are 
installed. If any affected engines are installed, then this AD 
prohibits operation of an airplane with two or more affected engines 
that have LPT2 blades with less than 250 operating hours since new.

Differences Between This AD and the Service Information

    Paragraphs (e)(2) and (e)(3) of this AD require that certain 
affected engines be removed before further flight. Honeywell ASB No. 
TFE731-72-A3792, dated June 5, 2014; ASB No. TFE731-72-A5242, dated 
June 5, 2014; and ASB No. TFE731-72-A5243, dated June 5, 2014, for 
airplanes having only one affected engine installed, require no action 
at this time and may continue operation.

Interim Action

    We consider this AD to be an interim action. We anticipate that 
further AD action will follow.

FAA's Determination of the Effective Date

    An unsafe condition exists that requires the immediate adoption of 
this AD. The FAA has found that the risk to the flying public justifies 
waiving notice and comment prior to adoption of this rule because of 
compliance requirement before further flight. Therefore, we find that 
notice and opportunity for prior public comment are impracticable and 
that good cause exists for making this amendment effective in less than 
30 days.

Comments Invited

    This AD is a final rule that involves requirements affecting flight 
safety and was not preceded by notice and an opportunity for public 
comment. However, we invite you to send any written data, views, or 
arguments about this AD. Send your comments to an address listed under 
the ADDRESSES section. Include ``Docket No. FAA-2014-0386; Directorate 
Identifier 2014-NE-09-AD'' at the beginning of your comments. We 
specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this AD. We will consider all 
comments received by the closing date and may amend this AD because of 
those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this AD.

Costs of Compliance

    We estimate that this AD affects 50 engines installed on airplanes 
of U.S. registry. We also estimate that it will take about 18 hours per 
engine to comply with this AD. The average labor rate is $85 per hour. 
Required parts cost about $0 per engine. Based on these figures, we 
estimate the cost of this AD on U.S. operators to be $76,500.

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.

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 to the extent 
that it justifies making a regulatory distinction, 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):

2014-12-52 Honeywell International Inc. (Type Certificate previously 
held by AlliedSignal Inc., Garrett Turbine Engine Company): 
Amendment 39-17897; Docket No. FAA-2014-0386; Directorate Identifier 
2014-NE-09-AD.

(a) Effective Date

    This AD is effective July 28, 2014.

(b) Affected ADs

    This AD supersedes Emergency AD 2014-12-52, Directorate 
Identifier 2014-NE-09-AD, dated June 10, 2014.

(c) Applicability

    This AD applies to all Honeywell International Inc. TFE731-4, -
4R, -5AR, -5BR, -5R, -20R, -20AR, -20BR, -40, -40AR, -40R, -40BR, -
50R, and -60 turbofan engines with 2nd stage low-pressure turbine 
(LPT2) blades, part number (P/N) 3075424-1, -2, or -3, installed.

(d) Unsafe Condition

    This AD was prompted by reports of LPT2 blade separations. 
Analysis indicates the presence of casting anomalies at or near the 
root of the LPT2 blade. We are issuing this AD to prevent LPT2 blade 
failure, multiple engine in-flight shutdowns, and damage to the 
airplane.

[[Page 39963]]

(e) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) Before further flight, review engine logbook maintenance 
records to determine if any engine is installed that has LPT2 blade, 
P/N 3075424-1, -2, or -3, installed with less than 250 operating 
hours since new on the blade.
    (2) For two-engine airplanes that have two engines with LPT2 
blades installed that have less than 250 operating hours since new, 
remove all affected engines before further flight.
    (3) For three-engine airplanes that have two or more engines 
with LPT2 blades installed that have less than 250 operating hours 
since new, remove all affected engines before further flight.
    (4) After the effective date of this AD, do not install any 
engine that has installed in it LPT2 blades, P/N 3075424-1, -2, or -
3, that have less than 250 operating hours since new.

(f) Special Flight Permit

    Special flight permits are permitted for one over-land ferry 
flight to a maintenance facility where engines can be removed.

(g) Alternative Methods of Compliance (AMOCs)

    The Manager, Los Angeles Aircraft Certification Office, FAA, may 
approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 
to make your request.

(h) Related Information

    (1) For more information about this AD, contact Joseph Costa, 
Aerospace Engineer, Los Angeles Aircraft Certification Office, FAA, 
Transport Airplane Directorate, 3960 Paramount Blvd., Lakewood, CA 
90712-4137; phone: 562-627-5246; fax: 562-627-5210; email: 
[email protected].
    (2) Honeywell International Alert Service Bulletin (ASB) No. 
TFE731-72-A3792, dated June 5, 2014; ASB No. TFE731-72-A5242, dated 
June 5, 2014; and ASB No. TFE731-72-A5243, dated June 5, 2014, which 
are not incorporated by reference in this AD, can be obtained from 
Honeywell International Inc., using the contact information in 
paragraph (h)(3) of this AD.
    (3) For service information identified in this AD, contact 
Honeywell International Inc., 111 S. 34th Street, Phoenix, AZ 85034-
2802; phone: 800-601-3099; Internet: http://www.myaerospace.com.
    (4) You may view this service information at the FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, 
MA. For information on the availability of this material at the FAA, 
call 781-238-7125.

    Issued in Burlington, Massachusetts, on July 7, 2014.
Ann C. Mollica,
Acting Assistant Directorate Manager, Engine & Propeller Directorate, 
Aircraft Certification Service.
[FR Doc. 2014-16244 Filed 7-10-14; 8:45 am]
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