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2009-11-04: Propeller gearbox (PGB)

FAA order 2009-11-04 is an airworthiness directive in force since June 26, 2009. The FAA's subject line: Propeller gearbox (PGB). It names the Rolls-Royce AE 2100A, Rolls-Royce AE 2100D3 engines: about 12 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: Rolls-Royce Corporation; Rolls-Royce Corporation; Rolls-Royce Corporation; Rolls-Royce Corporation; Rolls-Royce Corporation
Models: AE 2100D2, AE 2100D2A, AE 2100D3, AE 2100J
Engine series: Rolls-Royce AE 2100A 7 aircraft
Rolls-Royce AE 2100D3 5 aircraft

Dates and paperwork

In force since: June 26, 2009
Published: June 11, 2009 (signed May 14, 2009)
Docket: FAA-2009-0082
Status: Current
The FAA's document: Read the order on the FAA's site

The FAA's summary their words, unchanged

The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce Corporation (RRC) AE 2100D2, AE 2100D2A, AE 2100D3, and AE 2100J turboprop engines with certain propeller gearbox (PGB) shaft-and- carrier assemblies installed. These engines are U.S. type-certificated but as of the effective date of this AD are only installed on military airplanes. This AD requires monitoring a certain population of PGB shaft-and-carrier assemblies for vibration during flight, and borescope-inspecting the PGB shaft for cracks if vibration is experienced. This AD would also require removing the affected population of PGB shaft-and-carrier assemblies from service and installing serviceable PGB shaft-and-carrier assemblies. This AD results from a report of a crack found in the forward cone of a PGB shaft in an RRC AE 2100D3 turboprop engine that was removed from service due to high vibration. We are issuing this AD to prevent separation of the propeller from the airplane, which could result in injury, and damage to the airplane.

The order itself the regulatory text, as published

Show the full text (5,195 characters)

2009-11-04 Rolls-Royce Corporation (formerly Allison Engine Company): Amendment 39-15914. Docket No. FAA-2009-0082; Directorate Identifier 2008-NE-42-AD. 

Effective Date 

	(a) This airworthiness directive (AD) becomes effective June 26, 2009. 

Affected ADs 

	(b) None. 

Applicability 

	(c) This AD applies to Rolls-Royce Corporation (RRC) AE 2100D2, AE 2100D2A, AE 2100D3, and AE 2100J turboprop engines with certain serial number (SN) propeller gearbox (PGB) shaft-and-carrier assemblies installed. These engines are U.S. type-certificated but as of the effective date of this AD are only installed on military airplanes. For the SNs affected, see the Effectivity section of the applicable service bulletin in Table 1 of this AD. 

	Table 1--Applicable Lists of Affected PGB Shaft-and-Carrier Assemblies 


For Engine Model:
Reference Service Bulletin:
AE 2100D2, AE 2100D2A
AE 2100D2-A-72-073, Revision 1, dated February 18, 2008
AE 2100D3
AE 2100D3-A-72-256, Revision1, dated February 18, 2008
AE 2100J
AE 2100J-A-72-071, Revision 1, dated February 18, 2008


	These engines are U.S. type-certificated and are installed on, but not limited to, Lockheed Martin C130-J and Lockheed/Alenia C-27J military airplanes. 

Unsafe Condition 

	(d) This AD results from a report of a crack found in the forward cone of a PGB shaft in an RRC AE 2100D3 turboprop engine that was removed from service due to high vibration. We are issuing this AD to prevent separation of the propeller from the airplane, which could result in injury, and damage to the airplane. 

Compliance 

	(e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. 

Monitoring for PGB Vibration During Flight 

	(f) During flight, monitor affected engines for vibration in the PGB shaft and carrier assemblies, using the vibration monitoring system in the cockpit. 
	(g) Whenever a vibration message is displayed on the airplane's Advisory Caution and Warning System, borescope-inspect the PGB shaft-and-carrier assembly for cracks, before any additional flights. 
	(h) If any crack is found, remove the engine from service. 
	(i) Guidance on borescope-inspecting, vibration monitoring, and fault isolation procedures can be found in the applicable service bulletin listed in Table 2 of this AD. 

	Table 2--Information on Borescope-Inspecting, Vibration Monitoring, and Fault Isolation Procedures



For Engine Model:
Reference Service Bulletin:
AE 2100D2, AE 2100D2A
AE 2100D2-A-72-074, dated April 7, 2008
AE 2100D3
AE 2100D3-A-72-258, dated April 7 2008
AE 2100J
AE 2100J-A-72-070, dated September 17, 2007
AE 2100J-A-72-073, dated October 11, 2007

Terminating Action--Removal of Affected PGB Shaft-and-Carrier Assemblies 

	(j) At the next shop visit for PGB inspection or repair after the effective date of this AD, remove the affected PGB shaft-and- carrier assembly from service and install an eligible PGB shaft-and- carrier assembly. 
	(k) After the effective date of this AD, do not install any PGB shaft and carrier assembly in any aircraft if it was removed for cracks. 

Definition 

	(l) For the purpose of this AD, a PGB shaft-and-carrier assembly is eligible for installation if it was manufactured after June 2005, or if it is P/N 23087076 or P/N 23087077. 

Alternative Methods of Compliance 

	(m) The Manager, Chicago Aircraft Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. 

Related Information 

	(n) Contact Rolls-Royce Corporation, P.O. Box 420, Indianapolis, IN 46206; telephone: (317) 230-3774; fax (317) 230-6084; e-mail: indy.pubs.services@rolls-royce.com, for the service information identified in this AD. 
	(o) Contact Michael Downs, Aerospace Engineer, Chicago Aircraft Certification Office, FAA, Small Airplane Directorate, 2300 E. Devon Ave., Des Plaines, IL 60018; e-mail: michael.downs@faa.gov; telephone (847) 294-7870, fax (847) 294-7834, for more information about this AD. 
	(p) You must use the service information specified in Table 3 of this AD to determine the SNs of PGB shaft-and-carrier assemblies affected by this AD. The Director of the Federal Register approved the incorporation by reference of the documents listed in Table 3 of this AD in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Rolls-Royce Corporation, P.O. Box 420, Indianapolis, IN 46206; telephone (317) 230-3774; fax (317) 230-6084; e-mail: indy.pubs.services@rolls-royce.com for a copy of this service information. You may review copies at the FAA, New England Region, 12 New England Executive Park, Burlington, MA; or 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. 

	Table 3--Incorporation by Reference


Service Bulletin No.
Page
Revision
Date
AE 2100D2-A-72-073
Total Pages: 5
All
1
February 18, 2008
AE 2100D3-A-72-256
Total Pages: 16
All
1
February 18, 2008
AE 2100J-A-72-071
Total Pages: 4
All
1
February 18, 2008

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/2009-11-04.json · aircraft systems.