AD Amdt-39-11019

final rule
Data completeness: 70%

Airworthiness Directives; Textron Lycoming Model O-540-F1B5 Reciprocating Engines

AD Number
Amdt-39-11019
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. 98-ANE-73-AD
FR Citation
64 FR 5149

Applicability

TypeManufacturerModelDetails
aircraft Textron Lycoming Model O-540-F1B5 reciprocating engines Airworthiness Directives; Textron Lycoming Model O-540-F1B5 Reciprocating Engines
engine Lycoming O-540-F1B5 Reciprocating Airworthiness Directives; Textron Lycoming Model O-540-F1B5 Reciprocating Engines

Unsafe Condition

Failure of the crankshaft gear retaining bolts can result in engine failure, leading to autorotation and forced landing.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Remove and replace the crankshaft gear retaining bolts.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight.

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Affected Aircraft

Textron Lycoming Model O-540-F1B5 reciprocating engines.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

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