AD 2016-21-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental | Motors | Airworthiness Directives; Continental Motors, Inc. Reciprocating Engines |
Unsafe Condition
Failure of the oil cooler cross fitting assembly, leading to uncommanded in-flight shutdown (IFSD) and potential engine failure, injuries, and significant airplane damage.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the oil cooler cross fitting, nipple, and bushing using the procedures in CMI Critical Service Bulletin CSB15-2C or CSB15-7B.
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Compliance Time
Within 12 months or 100 flight hours after the effective date, whichever occurs first.
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Affected Aircraft
Continental Motors, Inc. TSIO-550-K, TSIOF-550-K, TSIO-550-C, TSIOF-550-D, and TSIO-550-N reciprocating engines with serial numbers below 1012296 and oil cooler cross fittings part number AN918-1J or AN918-2J installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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