Search FAA Documents

198 results found (1294ms)

Sort by: Date AD Number

2026-04-11 Recurring

final rule

Airworthiness Directives; Lycoming Engines

Unsafe Condition: Reports of connecting rod failures, which resulted in uncontained engine failure and in-flight shutdowns.

Effective: Apr 8, 2026 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Lycoming Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2024-21-02 Recurring

final rule

Airworthiness Directives; Lycoming Engines

Unsafe Condition: Connecting rod failures, which resulted in uncontained engine failure and in-flight shutdowns (IFSDs), due to degradation of the connecting rod small end bushings.

Effective: Dec 5, 2024 Category: engine Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Lycoming Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2023-09-09 Recurring

final rule

Airworthiness Directives; Various Airplanes, Helicopters, and Engines

Unsafe Condition: Multiple failures of spot-welded, multi-segment v-band couplings at the tailpipe to the turbocharger exhaust housing flange.

Effective: Jul 17, 2023 Category: engine Compliance: Within 50 flight hours after the effective date of this AD.

Why matched: Airworthiness Directives; Various Airplanes, Helicopters, and Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2022-16-03

final rule

Airworthiness Directives; Continental Aerospace Technologies, Inc., Lycoming Engines, and Textron Lycoming/Subsidiary of Textron, Inc. Reciprocating Engines

Unsafe Condition: A manufacturing quality escape of improperly lubricated roller bearings installed in certain magnetos, which may result in overheating and magneto seizure.

Effective: Aug 15, 2022 Category: aircraft Compliance: Within 25 operating hours time-in-service (TIS) or, if any affected magneto has accumulated more ...

Why matched: Airworthiness Directives; Continental Aerospace Technologies, Inc., Lycoming Engines, and Textron Lycoming/Subsidiary of Textron, Inc. Reciprocating Engines

2022-10-02 Recurring

final rule

Airworthiness Directives; Honeywell International, Inc. (Type Certificate Previously Held by AlliedSignal, Inc. and Textron Lycoming) Turboshaft Engines

Unsafe Condition: tachometer drive spur gear failure, resulting in potential engine overspeed, loss of power turbine speed (N2) instrument panel indication, and hard landings.

Effective: Jun 28, 2022 Category: engine Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Honeywell International, Inc. (Type Certificate Previously Held by AlliedSignal, Inc. and Textron Lycoming) Turboshaft Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2020-25-12

final rule

Airworthiness Directives; Superior Air Parts, Inc. Engines and Lycoming Engines Reciprocating Engines With a Certain SAP Crankshaft Assembly

Unsafe Condition: The presence of a white layer on the crankshaft assembly, which is brittle and can lead to spalling or fatigue cracking of the crankshaft assembly as a result of the normal mechanical loads during ...

Effective: Jan 15, 2021 Category: engine Compliance: This AD is effective January 15, 2021.

Why matched: Airworthiness Directives; Superior Air Parts, Inc. Engines and Lycoming Engines Reciprocating Engines With a Certain SAP Crankshaft Assembly

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2017-16-11

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines

Unsafe Condition: Connecting rod failures resulting in uncontained engine failure and in-flight shutdowns (IFSDs).

Effective: Aug 15, 2017 Category: engine Compliance: Within 10 operating hours.

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2017-11-10 Recurring

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines

Unsafe Condition: Cracked engine exhaust pipes and exhaust studs pulling out from cylinders on Lycoming TIO-540-AJ1A reciprocating engines, which could lead to engine exhaust leaks.

Effective: Jun 28, 2017 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

2015-19-07

final rule

Airworthiness Directives; Lycoming Engines Fuel Injected Reciprocating Engines

Unsafe Condition: Failure of the fuel injector fuel lines, which could lead to uncontrolled engine fire, engine damage, and damage to the airplane.

Effective: Nov 3, 2015 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Lycoming Engines Fuel Injected Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2015-10-06

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines (Type Certificate Previously Held by Textron Lycoming Division, AVCO Corporation)

Unsafe Condition: cracked engine exhaust pipes

Effective: Jul 2, 2015 Category: engine Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines (Type Certificate Previously Held by Textron Lycoming Division, AVCO Corporation)

2015-02-07

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines (Type Certificate previously held by Textron Lycoming Division, AVCO Corporation)

Unsafe Condition: Propeller governor shaft set screws coming loose due to improper installation.

Effective: Mar 11, 2015 Category: engine Compliance: Within the compliance times specified in the AD, unless already done.

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines (Type Certificate previously held by Textron Lycoming Division, AVCO Corporation)

Technical illustration of an aircraft propeller assembly
Problem area Propeller

Amdt-39-17881

final rule

Airworthiness Directives; AERMACCHI S.p.A. Airplanes

Unsafe Condition: Improper position of the set screw, which could lead to complete loss of engine oil pressure and result in emergency landing.

Effective: Jul 11, 2014 Category: engine Compliance: Within 30 days of the effective date (July 11, 2014).

Why matched: Airworthiness Directives; AERMACCHI S.p.A. Airplanes

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2013-21-02

final rule

Airworthiness Directives; Lycoming Engines and Continental Motors, Inc. Reciprocating Engines

Unsafe Condition: Turbocharger turbine wheel failure, reduction or complete loss of engine power, loss of engine oil, oil fire, and damage to the airplane.

Effective: Nov 13, 2013 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Lycoming Engines and Continental Motors, Inc. Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2012-24-09

final rule

Airworthiness Directives; Lycoming Engines and Continental Motors, Inc. Reciprocating Engines

Unsafe Condition: Failure of the turbocharger could result in engine failure and subsequent loss of control of the aircraft.

Effective: Jan 14, 2013 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Lycoming Engines and Continental Motors, Inc. Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2012-19-01

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines

Unsafe Condition: Failure of the crankshaft, which will result in total engine power loss, in-flight engine failure, and possible loss of the aircraft.

Effective: Oct 24, 2012 Category: engine Compliance: Within 50 flight hours or before further flight, whichever occurs first.

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2012-03-07

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines

Unsafe Condition: A 'machined-from-billet' HA-6 carburetor having a loose mixture control sleeve that rotated in the carburetor body causing restriction of fuel and power loss.

Effective: Mar 27, 2012 Category: engine Compliance: Within 50 flight hours after the effective date of this AD, unless already done.

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

Amdt-39-16909

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines

Unsafe Condition: Failed fuel injector tube assembly.

Effective: Mar 8, 2012 Category: aircraft Compliance: Before further flight.

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

71-13-01R1

final rule

Airworthiness Directives; Lycoming Engines Reciprocating Engines

Unsafe Condition: Rescinding an airworthiness directive

Effective: Mar 8, 2012 Category: engine

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

2012-03-06

final rule

Airworthiness Directives; Superior Air Parts, Lycoming Engines (Formerly Textron Lycoming), and Continental Motors, Inc., Fuel-Injected Reciprocating Engines

Unsafe Condition: Failed AFS fuel servo diaphragms, part numbers AV2541801 or AV2541803, could lead to an in-flight engine shutdown and damage to the airplane.

Effective: Feb 24, 2012 Category: engine Compliance: Within 5 flight hours after the effective date

Why matched: Airworthiness Directives; Superior Air Parts, Lycoming Engines (Formerly Textron Lycoming), and Continental Motors, Inc., Fuel- Injected Reciprocating Engines

2011-26-04

final rule

Airworthiness Directives; Lycoming Engines, Fuel Injected Reciprocating Engines

Unsafe Condition: Failure of the fuel injector fuel lines that would allow fuel to spray into the engine compartment, resulting in an engine fire.

Effective: Jan 25, 2012 Category: engine Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Lycoming Engines, Fuel Injected Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2011-18-09

final rule

Airworthiness Directives; Lycoming Engines Model IO-720-A1B Reciprocating Engines

Unsafe Condition: Failure of a crankshaft due to incorrect parts installed, specifically improper counterweight washers.

Effective: Sep 29, 2011 Category: engine Compliance: Before further flight after the effective date of this AD.

Why matched: Airworthiness Directives; Lycoming Engines Model IO-720-A1B Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2011-15-10

final rule

Airworthiness Directives; Superior Air Parts and Lycoming Engines (Formerly Textron Lycoming) Fuel-Injected Engines

Unsafe Condition: Diaphragms produced from specific lot numbers could have stud threads that don't meet design, incomplete braze between the stud and hub, and studs made from lower temper material. Diaphragms from t...

Effective: Aug 16, 2011 Category: aircraft Compliance: Within 5 flight hours after the effective date of this AD.

Why matched: Airworthiness Directives; Superior Air Parts and Lycoming Engines (Formerly Textron Lycoming) Fuel-Injected Engines

2011-13-03

final rule

Airworthiness Directives: Lycoming Engines (Type Certificate Previously Held by Textron Lycoming) and Teledyne Continental Motors (TCM) Turbocharged Reciprocating Engines

Unsafe Condition: Machining debris left in the cavities of the turbocharger center housing and rotating assembly (CHRA) during manufacture could result in seizure of the turbocharger turbine, leading to engine damag...

Effective: Jul 13, 2011 Category: engine Compliance: Before further flight for turbochargers with less than 50 hours time-in-service on the effective ...

Why matched: Airworthiness Directives: Lycoming Engines (Type Certificate Previously Held by Textron Lycoming) and Teledyne Continental Motors (TCM) Turbocharged Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2010-07-08

final rule

Airworthiness Directives; Kelly Aerospace Energy Systems, LLC Rebuilt Turbochargers

Unsafe Condition: Separation or seizure of the turbocharger turbine due to a rough surface finish on the turbine wheel shaft exceeding allowable limits, which disrupts the hydrodynamic layer of oil between the shaft...

Effective: Apr 19, 2010 Category: engine Compliance: Within 10 hours time-in-service after the effective date of this AD.

Why matched: Airworthiness Directives; Kelly Aerospace Energy Systems, LLC Rebuilt Turbochargers

2009-26-12 Recurring

final rule

Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies

Unsafe Condition: Cracks at the head-to-barrel interface of ECi cylinder assemblies, leading to cylinder head separation and potential engine failure, which could result in loss of control of the aircraft.

Effective: Feb 4, 2010 Category: engine Compliance: Within 50 flight hours after the effective date of this AD.

Why matched: Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies

Technical illustration of an aircraft turbine engine assembly
Problem area Engine