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79-13-09: Compressor Rotor Spools

FAA order 79-13-09 is an airworthiness directive. The FAA's subject line: Compressor Rotor Spools. It names the General Electric CF6-50C, General Electric CF6-50C2, General Electric CF6-80 series engines: about 249 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
CF6-50A, CF6-50C, CF6-50C1, CF6-50C2, CF6-50C2B, CF6-50C2D, CF6-50CA, CF6-50E, CF6-50E1, CF6-50E2, CF6-50E2B
Engine series
General Electric CF6-50C 1 aircraft
General Electric CF6-50C2 10 aircraft
General Electric CF6-80 series 238 aircraft

Dates and paperwork

Docket
Unknown
Status
Current
The FAA's document
Read the order on the FAA's site

The order itself the regulatory text, as published

Show the full text (894 characters)
79-13-09 GENERAL ELECTRIC: Amendment 39-3508. Applies to General Electric Model CF6-50 series engines containing stage 3-9 high pressure compressor rotor spools P/N 9081M49 (serial numbers as specified in the body of this AD) installed in, but not limited to certain McDonnell Douglas DC-10, Boeing 747, and Airbus Industries A-300 series aircraft certificated in all categories. Due to design differences, this AD does not affect CF6-6 series engines. Compliance required within the next 30 calendar days after the effective date of this AD, unless previously accomplished. To preclude possible engine failure resulting from compressor rotor spool fatigue cracking, remove from service stage 3-9 high pressure compressor rotor spools P/N 9081M49, Serial Numbers A0436, A0570, A0581, A0590, A0432 and A0443. This amendment becomes effective upon publication in the Federal Register.

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 November 6, 2026. Connections as data: /graph/directive/79-13-09.json · aircraft systems.