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2016-14-10: High-pressure turbine (HPT) disks

FAA order 2016-14-10 is an airworthiness directive in force since August 9, 2016. The FAA's subject line: High-pressure turbine (HPT) disks. It names the CFM International CFM56-3, CFM International CFM56-3B, CFM International CFM56-3C engines: about 14 aircraft on the U.S. register today across them, though an order usually covers particular versions or serial numbers rather than every one. System: engine.

What it applies to as the FAA lists it

Kind of product: Engine
Makes: CFM International, S.A.
Models: CFM56-3, CFM56-3B, CFM56-3C
Engine series: CFM International CFM56-3 1 aircraft
CFM International CFM56-3B 3 aircraft
CFM International CFM56-3C 10 aircraft

Dates and paperwork

In force since: August 9, 2016
Published: July 25, 2016 (signed July 11, 2016)
Docket: FAA-2012-1289
Replaces: 2013-02-02
Status: Current
The FAA's document: Read the order on the FAA's site

The FAA's summary their words, unchanged

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.

The order itself the regulatory text, as published

Show the full text (4,011 characters)

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: ANE-AD-AMOC@faa.gov. 

(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: kenneth.steeves@faa.gov. 

(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.

Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of October 5, 2026. Connections as data: /graph/directive/2016-14-10.json · aircraft systems.