AD 61-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Piper Aircraft Inc. | PA-24-250 | Airworthiness Directives; Piper Model PA-24 "250" Aircraft |
Unsafe Condition
Cracks occurring in the exhaust stack assembly, right side, P/N 21664-03, particularly in the area where the rear engine cylinder exhaust stack is welded to the exhaust stack assembly.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the carburetor heat shroud assembly (P/N 21664-03) for cracks or deterioration within 25 hours' time in service after the effective date. If cracks or deterioration are found, replace the assembly before further flight. Install a clamp-on reinforcement (Piper Kit No. 754396 or equivalent) within 100 hours' time in service after initial compliance with the inspection requirement.
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Compliance Time
Within 25 hours' time in service after effective date of this AD for the initial inspection, and within 100 hours' time in service after initial compliance with the inspection for the reinforcement installation.
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Affected Aircraft
Piper Model PA-24-250 Aircraft, serial numbers 24-103 to 24-1629 inclusive, which do not have a reinforcing plate welded to the stack in the area where the rear engine cylinder stack is welded to the exhaust stack assembly.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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