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99-07-04

final rule

Airworthiness Directives; Williams International, L.L.C. FJ44-1A Turbofan Engines

Unsafe Condition: High Pressure Turbine (HPT) disk rim failure, which could result in an uncontained engine failure and damage to the aircraft.

Effective: May 24, 1999 Category: engine Compliance: Before further flight if not already accomplished.

Why matched: Airworthiness Directives; Williams International, L.L.C. FJ44-1A Turbofan Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine
View Details Official Source ↗

97-01-05

final rule

Airworthiness Directives; Williams International, L.L.C. Model FJ44-1A Turbofan Engines

Unsafe Condition: Cracks in high pressure turbine (HPT) disk blade retention posts due to material creep/fatigue, leading to separation of posts and liberation of turbine blades, resulting in loss of engine power an...

Effective: Jan 21, 1997 Category: engine Compliance: Initial compliance required within 50 cycles after January 21, 1997 or by February 1, 1997, which...

Why matched: Airworthiness Directives; Williams International, L.L.C. Model FJ44-1A Turbofan Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine
View Details Official Source ↗