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2006-25-13: Compressor cone shaft assemblies

FAA order 2006-25-13 is an airworthiness directive in force since December 29, 2006. The FAA's subject line: Compressor cone shaft assemblies. It names the Rolls-Royce AE 2100D3 engine: about 5 aircraft on the U.S. register today, 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
Models
AE 2100D3
Engine series
Rolls-Royce AE 2100D3 5 aircraft

Dates and paperwork

In force since
December 29, 2006
Published
December 14, 2006 (signed December 6, 2006)
Docket
FAA-2006-26414
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 2100D3 turboprop engines. This AD requires removing certain part number (P/N) compressor cone shaft assemblies at a new reduced cyclic life limit of 5,000 engine cycles. This AD results from low-cycle-fatigue testing and analysis of certain P/N compressor cone shaft assemblies, by RRC. We are issuing this AD to prevent uncontained failure of the compressor cone shaft assembly, leading to engine shutdown and damage to the airplane.

The order itself the regulatory text, as published

Show the full text (1,724 characters)
2006-25-13 Rolls-Royce Corporation (formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison): Amendment 39-14854. Docket No. FAA-2006-26414; Directorate Identifier 2006-NE- 42-AD. Effective Date (a) This airworthiness directive (AD) becomes effective December 29, 2006. Affected ADs (b) None. Applicability (c) This AD applies to Rolls-Royce Corporation (RRC) AE 2100D3 turboprop engines with a compressor cone shaft assembly, part number 23050728, 23070729, or 23076017, installed. These engines are installed on, but not limited to, Lockheed Martin C-130J military transport airplanes. Unsafe Condition (d) This AD results from low-cycle-fatigue testing and analysis of the affected compressor cone shaft assemblies, by RRC. We are issuing this AD to prevent uncontained failure of the compressor cone shaft assembly, leading to engine shutdown 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. Removal of Compressor Cone Shaft Assemblies (f) After the effective date of this AD, remove compressor cone shaft assemblies from service at the new reduced life limit of 5,000 engine cycles. Alternative Methods of Compliance (g) The Manager, Engine 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 (h) Rolls-Royce Corporation Alert Service Bulletin No. AE 2100D3-A-72-249, dated March 14, 2006, pertains to the subject of this AD. Material Incorporated by Reference (i) None.

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/2006-25-13.json · aircraft systems.