AD 2002-23-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | Canada PT6A Series | Airworthiness Directives; Pratt & Whitney Canada PT6A Series Turboprop Engines |
Unsafe Condition
Failure of the turbine exhaust duct due to cracking, which could result in possible separation of the reduction gearbox and propeller from the engine, and possible loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect turbine exhaust ducts for low-quality welds and cracks. Revise the maintenance program to include these inspections.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Canada PT6A series turboprop engines with turbine exhaust ducts part numbers 3012290, 3031988, 3032117, 3035784, 3035786, 3105890-01, 3112167-01, and 3111780-01, installed on various aircraft models including Beechcraft King Air-90 and -100 series, Bombardier DHC-6 series, Embraer EMB-110 series, Pilatus PC-6 series, and Piper PA-42 series.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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