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Airworthiness Directive

AD 2020-25-12 85 FR 79828 Active

Federal Aviation Administration · 14 CFR part 39

Requires the removal from service of all affected crankshaft assemblies.

Federal Register (opens in a new tab)FAA DRS (opens in a new tab)

FR document
2020-27149
Amendment
39-21354
Published
2020-12-11
Effective
2021-01-15
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2020-25-12 · 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

2020-25-12

FR doc 2020-27149 · 85 FR 79828

AD 2020-25-12Published 2020-12-11Effective 2021-01-15

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 from service of all affected crankshaft assemblies.

Full official abstract

The FAA is adopting a new airworthiness directive (AD) for all Superior Air Parts, Inc. (SAP) Model IO-360-series and O-360-series reciprocating engines and certain Lycoming Engines (Lycoming) Model AEIO-360-, IO-360-, and O-360-series reciprocating engines with a certain SAP crankshaft assembly installed. This SAP crankshaft assembly is installed as original equipment on the affected SAP engines and as a replacement part under parts manufacturer approval (PMA) on the affected Lycoming engines. This AD was prompted by three crankshaft assembly failures that resulted in the loss of engine power and immediate or emergency landings. This AD requires the removal from service of all affected crankshaft assemblies. The FAA is issuing this AD to address the unsafe condition on these products.

More directives for Lycoming O-360

  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 2009-02-03 Airworthiness Directives; Lycoming Engines IO, (L)IO, TIO, (L)TIO, AEIO,... Effective 2009-02-09
  4. AD 2008-08-14 Airworthiness Directives; Lycoming Engines IO, (L)IO, TIO, (L)TIO, AEIO,... Effective 2008-04-29
  5. AD 2006-20-09 Airworthiness Directives; Lycoming Engines (L)O-360, (L)IO-360, AEIO-360... Effective 2006-11-03

All Lycoming O-360 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