AD 2012-10-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental | Motors | Airworthiness Directives; Continental Motors, Inc. (CMI) Reciprocating Engines |
Unsafe Condition
Fractures in starter adapter gear shafts in certain additional part number (P/N) CMI starter adapters, which could cause oil scavenge pump failure and engine in-flight shutdown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace affected CMI starter adapters with starter adapters eligible for installation. Compliance times vary based on total time-in-service (TIS) of the starter adapter.
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Compliance Time
Varies based on TIS: before further flight for adapters with less than 75 hours TIS, within 10 hours of engine operation or before exceeding 100 hours TIS for adapters between 75 and 100 hours TIS, and within 50 flight hours for adapters with more than 100 hours TIS.
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Affected Aircraft
Continental Motors, Inc. (CMI) TSIO-520-B, BB, D, DB, E, EB, J, JB, K, KB, N, NB, UB, VB; TSIO-550-K; TSIOF-550-K; IO-550-N (Turbo-normalized only; STC SE10589SC) engines with specific starter adapter part numbers installed before November 20, 2011.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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