AD 97-11-51 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | PW2037 | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW2037M | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW2040 | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW2043 | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW2143 | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW2240 | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW2337 | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
| engine | Pratt & Whitney Division | PW2643 | Airworthiness Directives; Pratt & Whitney PW2000 Series Turbofan Engines |
Unsafe Condition
Fracture of the first stage high pressure turbine (HPT) disk, resulting in a possible uncontained engine failure and damage to the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform eddy current inspection (ECI) of the first stage HPT disks for cracks in the forward face at the base of the fir tree lug. Rework the forward and aft faces of the first stage HPT disk OD snap fillet radii at the base of the fir tree lug as per service bulletins. Install new parts without prior rework but rework them at the next shop visit.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to further flight, for first stage HPT disks accessible in the shop on the effective date of this AD (May 10, 1997), and not previously inspected.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney PW2000 series turbofan engines with first stage HPT disk assembly Part Numbers 1A5921, 1B2671, and 1B3621, installed on Boeing 757 series and Ilyushin IL-96 series aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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