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Airworthiness Directive

AD 2011-18-09 76 FR 56637 Active

Federal Aviation Administration · 14 CFR part 39

Requires a crankshaft inspection for certain parts that may be installed.

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FR document
2011-22244
Amendment
39-16791
Published
2011-09-14
Effective
2011-09-29
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2011-18-09 · 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

2011-18-09

FR doc 2011-22244 · 76 FR 56637

AD 2011-18-09Published 2011-09-14Effective 2011-09-29

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 a crankshaft inspection for certain parts that may be installed.

Full official abstract

We are adopting a new airworthiness directive (AD) for certain model IO-720-A1B Lycoming Engines reciprocating engines. This AD requires a crankshaft inspection for certain parts that may be installed. This AD was prompted by the failure of a crankshaft due to incorrect parts installed. We are issuing this AD to prevent engine crankshaft failure and damage to the airplane.

More directives for Lycoming IO-720

  1. AD 2022-16-03 Airworthiness Directives; Continental Aerospace Technologies, Inc., Lyco... Effective 2022-08-15
  2. AD 2012-19-01 Airworthiness Directives; Lycoming Engines Reciprocating Engines Effective 2012-10-24
  3. AD 2006-20-09 Airworthiness Directives; Lycoming Engines (L)O-360, (L)IO-360, AEIO-360... Effective 2006-11-03
  4. AD 95-07-01 Airworthiness Directives; Textron Lycoming O-360, LO-360, HO-360, HIO-36... Effective 1995-04-12

All Lycoming IO-720 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index