AD 60-22-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | JT3C-6 | PRATT & WHITNEY Model JT3C-6 Engines |
Unsafe Condition
Cracks on the rear face of the rear flange of the combustion chamber outer case assembly P/N 255639 (case detail P/N 255640) outboard of the attaching nuts, which could lead to combustion chamber failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the rear face of the rear flange using 6-power glass every 65 or 130 hours' time in service depending on prior inspections. At overhaul, inspect the fillet between the snap diameter and front face of the rear flange, check hardness at three locations, and replace if hardness exceeds Rockwell C40.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required as indicated.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Model JT3C-6 engines with combustion chamber outer cases (P/N 255639, detail P/N 255640).
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.