Airworthiness Directives; CFM International, S.A. Turbofan Engines Modified by Supplemental Type Certificate SE00034EN

[Federal Register Volume 81, Number 142 (Monday, July 25, 2016)]
[Rules and Regulations]
[Pages 48321-48323]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-17442]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-1289; Directorate Identifier 2012-NE-43-AD; 
Amendment 39-18591; AD 2016-14-10]
RIN 2120-AA64


Airworthiness Directives; CFM International, S.A. Turbofan 
Engines Modified by Supplemental Type Certificate SE00034EN

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule; request for comments.

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SUMMARY: We are superseding airworthiness directive (AD) 2013-02-02 for 
certain CFM International, S.A. CFM56-3, CFM56-3B, and CFM56-3C 
turbofan engines. AD 2013-02-02 required removal from service of 
certain high-pressure turbine (HPT) disks manufactured by Global 
Material Solutions of Pratt & Whitney, at reduced maximum life limits. 
This AD corrects the serial numbers (S/Ns) listed in AD 2013-02-02. 
This AD was prompted by reports that certain HPT disk S/Ns in AD 2013-
02-02 and in certain Pratt & Whitney service information are incorrect. 
We are issuing this AD to prevent uncontained release of multiple 
turbine blades, damage to the engine, and damage to the airplane.

DATES: This AD is effective August 9, 2016.
    The Director of the Federal Register approved the incorporation by 
reference

[[Page 48322]]

of a certain publication listed in this AD as of August 9, 2016.
    We must receive any comments on this AD by September 8, 2016.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
    <bullet> Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
    <bullet> Fax: 202-493-2251.
    <bullet> 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.
    <bullet> Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays.
    For service information identified in this AD, contact Pratt & 
Whitney, 400 Main St., East Hartford, CT 06108; phone: 860-565-7700; 
fax: 860-565-1605. You may view this service information at the FAA, 
Engine & Propeller Directorate, 1200 District Avenue, Burlington, MA 
01803. For information on the availability of this material at the FAA, 
call 781-238-7125. It is also available on the Internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2012-
1289.

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-2012-
1289; 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 mandatory continuing airworthiness information, 
regulatory evaluation, any comments received, and other information. 
The address for the Docket 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: Kenneth Steeves, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 1200 
District Avenue, Burlington, MA 01803; phone: 781-238-7765; fax: 781-
238-7199; email: [email protected].

SUPPLEMENTARY INFORMATION: 

Discussion

    On January 14, 2013, we issued AD 2013-02-02, Amendment 39-17323 
(78 FR 5712, January 28, 2013), (``AD 2013-02-02'') for all CFM56-3, 
CFM56-3B, and CFM56-3C turbofan engines modified by Supplemental Type 
Certificate SE00034EN, with certain HPT disks, installed. AD 2013-02-02 
required removal from service of certain high-pressure turbine (HPT) 
disks manufactured by Global Material Solutions of Pratt & Whitney, at 
reduced maximum life limits. AD 2013-02-02 resulted from a report of a 
forging process error during manufacture of these HPT disks. We issued 
AD 2013-02-02 to prevent uncontained release of multiple turbine 
blades, damage to the engine, and damage to the airplane.

Actions Since AD 2013-02-02 Was Issued

    Since we issued AD 2013-02-02, we received reports that certain HPT 
disk S/Ns GLKBAA9307, GLKBAA9335, GLKBAA9404, GLKBAA9407, and 
GLKBAA9409, in AD 2013-02-02 and in certain Pratt & Whitney service 
information are incorrect. The correct S/Ns are: GKLBAA9307, 
GKLBAA9335, GKLBAA9404, GKLBAA9407, and GKLBAA9409.

Related Service Information Under 1 CFR Part 51

    We reviewed Pratt & Whitney Corp. Special Instruction No. 6F-12, 
Revision A, dated May 17, 2016. The Special Instruction describes 
procedures for reducing the maximum life limit for affected HPT disks. 
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.

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 removal from service of affected HPT disks at 
certain recalculated reduced maximum life limits.

FAA's Justification and Determination of the Effective Date

    No domestic operators use this product. Therefore, we find that 
notice and opportunity for prior public comment are unnecessary 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 we did not provide you with notice and an opportunity to 
provide your comments before it becomes effective. 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-2012-1289; Directorate Identifier 2012-NE-43-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 0 engines installed on airplanes 
of U.S. registry. We also estimate that it will take about 61 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 $0.

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

[[Page 48323]]

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 part 39 of the Federal Aviation 
Regulations (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 removing airworthiness directive (AD) 
2013-02-02, Amendment 39-17323 (78 FR 5712, January 28, 2013), (``AD 
2013-02-02''), and adding the following new AD:

2016-14-10 CFM International, S.A. Turbofan Engines Modified by 
Supplemental Type Certificate SE00034EN: Amendment 39-18591; Docket 
No. FAA-2012-1289; Directorate Identifier 2012-NE-43-AD.

(a) Effective Date

    This AD is effective August 9, 2016.

(b) Affected ADs

    This AD supersedes AD 2013-02-02.

(c) Applicability

    This AD applies to CFM International, S.A. CFM56-3, CFM56-3B, 
and CFM56-3C turbofan engines, modified by Supplemental Type 
Certificate SE00034EN, with a high-pressure turbine (HPT) disk, part 
number (P/N) 880026, serial number (S/N) GKLBAA9307, GKLBAA9335, 
GKLBAA9404, GKLBAA9407, or GKLBAA9409, installed.

(d) Unsafe Condition

    This AD was prompted by reports that certain HPT disk serial 
numbers in AD 2013-02-02 and in certain Pratt & Whitney service 
information are incorrect. We are issuing this AD to prevent 
uncontained release of multiple turbine blades, damage to the 
engine, and damage to the airplane.

(e) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.
    (1) For CFM56-3, CFM56-3B, and CFM56-3C turbofan engines 
operating to 20,100 lbs maximum takeoff (MTO) thrust, remove the HPT 
disk from service on or before accumulating 8,000 cycles-since-new 
(CSN).
    (2) For CFM56-3B and CFM56-3C turbofan engines operating to 
22,100 lbs MTO thrust, remove the HPT disk from service on or before 
accumulating 8,000 CSN.
    (3) For CFM56-3C turbofan engines operating to 23,500 lbs MTO 
thrust, remove the HPT disk from service on or before accumulating 
4,000 CSN.
    (4) For HPT disks that have been used in multiple models or 
thrust installations, use the formula in the ADDED DATA section of 
Pratt & Whitney Special Instruction 6F-12, Revision A, dated May 17, 
2016 to calculate the remaining life on the disk.

(f) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
for this AD. Use the procedures found in 14 CFR 39.19 to make your 
request. You may email your request to: [email protected].

(g) Related Information

    For more information about this AD, contact Kenneth Steeves, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA 01803; 
phone: 781-238-7765; fax: 781-238-7199; email: 
[email protected].

(h) 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) Pratt & Whitney Corp. Special Instruction No. 6F-12, 
Revision A, dated May 17, 2016.
    (ii) Reserved.
    (3) For Pratt & Whitney service information identified in this 
AD, contact Pratt & Whitney, 400 Main St., East Hartford, CT 06108; 
phone: 860-565-7700; fax: 860-565-1605.
    (4) You may view this service information at FAA, Engine & 
Propeller Directorate, 1200 District Avenue, Burlington, MA 01803. 
For information on the availability of this material at the FAA, 
call 781-238-7125.
    (5) You may view this service information 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 Burlington, Massachusetts, on July 11, 2016.
Colleen M. D'Alessandro,
Manager, Engine & Propeller Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-17442 Filed 7-22-16; 8:45 am]
 BILLING CODE 4910-13-P

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