AD 49-50-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental Motors | Teledyne Continental Motors | C-125-1 | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C-125-2 | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C145-2 | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C145-2H | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C90-12F | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C90-12FH | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C90-12FJ | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C90-12FP | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C90-14F | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
| engine | Continental Motors | Teledyne Continental Motors | C90-14FH | CONTINENTAL Models C-75, C-85, C-90, C-125 and C-145 Engines |
Unsafe Condition
Disintegration of the generator drive coupling rubber disc could result in engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and/or replace the rubber disc P/N 22348 prior to May 2, 1949, and at 100-hour intervals. Install improved coupling with metal retainer cup P/N 352030 to discontinue inspections. Replace rubber disc P/N 25120 at major overhaul for improved type couplings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to May 2, 1949, and upon each 100 hours of operation after inspection has been accomplished, or at major overhaul
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Continental Motors/Teledyne Continental Motors models C-75, C-85, C-90, C-125, and C-145 engines equipped with generators, excluding specific serial numbers listed in the AD.
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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