91-23-13: Fan Disks

91-23-13 GENERAL ELECTRIC COMPANY: Amendment No. 39-8082. Docket No. 91- ANE-38. Applicability: General Electric Company (GE) CF6-50 series and CF6-80A series turbofan engines, installed on, but not limited to, Airbus A300 and A310, Boeing 747 and 767, and McDonnell Douglas DC10-15 and DC10-30 aircraft. Compliance: Required as indicated, unless previously accomplished. To prevent an uncontained engine failure and damage to the aircraft, accomplish the following: (a) Within 30 days after the effective date of this AD, remove from service stage 1 fan disks identified by the following part number (P/N) and serial number (S/N): ENGINE MODEL PART NUMBER SERIAL NUMBER CF6-50 9253M66P02 MPON2919 9253M66P02 MPON2920 9253M66P02 MPON2921 9253M66P02 MPON2922 CF6-80A 9319M28P03 MPON4290 1327M57P02 MPON4291 9319M28P02 MPON4292 9319M28P03 MPON7740 9319M28P03 MPON7742 9319M28P03 MPON8452 9319M28P03 MPON8453 Prior to returning affected engines to service replace with a serviceable part. (b) Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished. (c) Upon submission of substantiating data by an owner or operator through an FAA Inspector (maintenance, avionics, or operations, as appropriate), an alternate method of compliance with the requirements of this AD or adjustments to the compliance times specified in this AD may be approved by the Manager, Engine Certification Office, Engine and Propeller Directorate, Aircraft Certification Service, 12 New England Executive Park, Burlington, Massachusetts 01803-5299. This amendment (39-8082, AD 91-23-13) becomes effective on November 22, 1991.