FAA orders · airworthiness directive · historical

2005-23-09: High pressure compressor (HPC) cases

FAA order 2005-23-09 is an airworthiness directive in force since November 25, 2005. The FAA's subject line: High pressure compressor (HPC) cases. It names the General Electric CF6-80 series, General Electric CF6-80E1A4 engines: about 247 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: General Electric Company
Models: CF6-80E1A1, CF6-80E1A2, CF6-80E1A3, CF6-80E1A4, CF6-80E1A4/B
Engine series: General Electric CF6-80 series 237 aircraft
General Electric CF6-80E1A4 10 aircraft

Dates and paperwork

In force since: November 25, 2005
Published: November 9, 2005 (signed November 1, 2005)
Docket: FAA-2005-22712
Replaced by: 2020-13-08
Status: Historical
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 General Electric Company (GE) CF6-80E1A1, -80E1A2, -80E1A3, -80E1A4, and -80E1A4/B turbofan engines. This AD requires initial and repetitive fluorescent-penetrant inspections (FPI) of certain areas of high pressure compressor (HPC) cases, part number (P/N) 1509M97G07 and P/N 2083M69G03. This AD results from the discovery that HPC cases, P/N 1509M97G07 and P/N 2083M69G03, were inadvertently left out of the Airworthiness Limitations Section (ALS), Chapter 05-21-02, of GE Engine Manual, GEK 99376, Revision 17. We are issuing this AD to prevent failure of the HPC case aft mount flange, due to cracking.

The order itself the regulatory text, as published

Show the full text (2,199 characters)

2005-23-09 General Electric Company: Amendment 39-14367. Docket No. FAA-2005-22712; Directorate Identifier 2005-NE-24-AD. \n\nEffective Date \n\n\t(a) This airworthiness directive (AD) becomes effective November 25, 2005. \n\nAffected ADs \n\n\t(b) None. \n\nApplicability \n\n\t(c) This AD applies to General Electric Company (GE) CF6-80E1A1, -80E1A2, -80E1A3, --80E1A4, and -80E1A4/B turbofan engines. These engines are installed on, but not limited to, Airbus Industrie A330 series airplanes. \n\nUnsafe Condition \n\n\t(d) This AD results from the discovery that high pressure compressor (HPC) cases, part number (P/N) 1509M97G07 and P/N 2083M69G03, were inadvertently left out of the Airworthiness Limitations Section (ALS), Chapter 05-21-02, of GE Engine Manual GEK 99376, Revision 17. We are issuing this AD to prevent failure of the HPC case aft flange, due to cracking. \n\nCompliance \n\n\t(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. \n\nInitial Inspection \n\n\n\t(f) For HPC cases, P/N 1509M97G07 and P/N 2083M69G03, perform an initial fluorescent-penetrant inspection (FPI) of circumferential flange spotfaces at the first hole in the aft flange above and below each horizontal split line flange, at or before reaching 7,300 cycles-since-new. See Figure 1 of this AD for reference. Information on inspecting these areas can be found in the ALS of GE Engine Manual GEK 99376, Revision 19, dated August 15, 2005. \n\n\n\n \nRepetitive Inspections \n\n\t(g) Perform repetitive FPI of circumferential flange spotfaces at the first hole in the aft flange above and below each horizontal split line flange, within 3,700 cycles-since-last-inspection. See Figure 1 of this AD for reference. Information on inspecting these areas can be found in the ALS of GE Engine Manual GEK 99376, Revision 19, dated August 15, 2005. \n\nAlternative Methods of Compliance \n\n\t(h) The Manager, EngineCertification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. \n\nRelated Information \n\n\t(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 7, 2026. Connections as data: /graph/directive/2005-23-09.json · aircraft systems.