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Airworthiness Directive

AD 99-03-05 64 FR 5149 Active

Federal Aviation Administration · 14 CFR part 39

FR document
99-2474
Amendment
39-11019
Published
1999-02-03
Effective
1999-02-18
Models covered
1
Last live check
2026-10-03

Printed from https://aircraftdirectives.com/ad/99-03-05 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

This page is a reference Record, not an airworthiness or compliance determination. Official FAA and manufacturer sources control over our restatement, subject to governing law. Check applicability, current requirements and incorporated documents before acting. The owner or operator remains responsible for airworthiness and required records under 14 CFR 91.403 and 91.417, as applicable. Terms of Use: /terms.

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AD

99-03-05

FR doc 99-2474 · 64 FR 5149

AD 99-03-05Published 1999-02-03Effective 1999-02-18

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires the removal and replacement of the crankshaft gear retaining bolts.

Full official abstract

This amendment adopts a new airworthiness directive (AD) that is applicable to Textron Lycoming Model O-540-F1B5 reciprocating engines. This action requires the removal and replacement of the crankshaft gear retaining bolts. This amendment is prompted by 2 reported failures of the crankshaft gear retaining bolts. The actions specified in this AD are intended to prevent failure of the crankshaft gear retaining bolts, which can result in engine failure and subsequent autorotation and forced landing.

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All Lycoming O-540 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab)

Applies to 1 model in our index