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AD 81-19-08

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Airworthiness directive · Low Pressure Turbine Rotor Stage 2 Disks · General Electric CF6-6D, CF6-6D1, CF6-6D1A and 2 more

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AboutSource files 1
Effective
September 21, 1981
Models
CF6-6D, CF6-6D1, CF6-6D1A, CF6-6K, CF6-6K2
Data sheet
TCDSE23EA
Registered aircraft
11 matched by model
Product
Engine
Amendment
39-4219

Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.

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The airworthiness directive

81-19-08 GENERAL ELECTRIC: Amendment 39-4219. Applies to all General Electric Model CF6-6 series turbofan engines installed in McDonnell Douglas DC10-10 aircraft containing low pressure turbine rotor stage 2 disks, P/Ns 9690M77P03, 9690M77P04, 9690M77P09, 9690M77P11, and 9690M77P13.

Compliance required as indicated.

To prevent possible low cycle fatigue failure of these disks, the life limits have been reduced below the figures currently approved. Remove from service low pressure turbine rotor stage 2 disks prior to reaching the revised life limits listed below or within the next 25 cycles in service after the effective date of this AD, whichever comes later.

Disk Part Number Previous Life Limit/Cycles Revised Life Limit/Cycles 9690M77P03 27,000 11,500 9690M77P04 27,000 11,500 9690M77P09 27,000 11,500 9690M77P11 27,000 11,500 Serial Numbers MP0A0727 through MP0A2215

9690M77P11 27,000 9,300 All other serial numbered disks9690M77P13 27,000 10,000

NOTE: General Electric CF6-6 Service Bulletin 72-786 pertains to this subject.

This amendment becomes effective on September 21, 1981.

Affected TCDS · 1

The type certificate data sheets for the models this AD names, matched by model and maker.

TCDS E23EAGeneral Electric CompanyNames 5 of 18 models: CF6-6D1A, CF6-6D, CF6-6D1 and 2 more

Registered aircraft · 11

Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.

By aircraft maker
  • Boeing6
  • Mcdonnell Douglas3
  • Airbus Industrie2
By year built
19711999

By model

Aircraft

N169DZDelta Air Lines Inc · Atlanta, GABuilt 1998 · S/N 29689N233AZCargo Aircraft Management Inc · Wilmington, OHBuilt 1998 · S/N 29430N257AZCargo Aircraft Management Inc · Wilmington, OHBuilt 1999 · S/N 29605N321CMCargo Aircraft Management Inc · Wilmington, OHBuilt 1998 · S/N 29431N367FEFederal Express Corporation · Memphis, TNBuilt 1971 · S/N 46605N369FEFederal Express Corporation · Memphis, TNBuilt 1972 · S/N 46607N476MCAtlas Air Inc · Purchase, NYBuilt 1999 · S/N 29256N491AZCargo Aircraft Management Inc · Wilmington, OHBuilt 1998 · S/N 29429N599FEFederal Express Corp · Memphis, TNBuilt 1993 · S/N 48598N656FEFederal Express Corp · Memphis, TNBuilt 1995 · S/N 745N657FEFederal Express Corp · Memphis, TNBuilt 1995 · S/N 748