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2025-20-18

final rule

Airworthiness Directives; Continental Aerospace Technologies GmbH Engines

Unsafe Condition: Cracks in the cylinder heads can cause engine coolant to leak into the combustion chamber, leading to engine overheat and eventual failure or seizure.

Effective: Oct 30, 2025 Category: engine Compliance: Within 5 flight hours for engines with 50 flight hours or more since the last coolant replacement...

Why matched: Airworthiness Directives; Continental Aerospace Technologies GmbH Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2023-17-04

final rule

Airworthiness Directives; Continental Aerospace Technologies, Inc. Engines

Unsafe Condition: power loss due to oil starvation

Effective: Oct 26, 2023 Category: aircraft Compliance: Before accumulating 50 flight hours after the effective date of this AD or at the next scheduled ...

Why matched: Airworthiness Directives; Continental Aerospace Technologies, Inc. Engines

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

2023-10-04

final rule

Airworthiness Directives; Boeing Airplanes

Unsafe Condition: Fatigue cracking of the wing terminal-to-spar chord joints could result in loss of control of the aircraft and reduced structural integrity of the airplane.

Effective: Jun 1, 2023 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Boeing Airplanes

2023-05-16

final rule

Airworthiness Directives; Continental Aerospace Technologies, Inc., Reciprocating Engines

Unsafe Condition: unsafe condition.

Effective: Mar 15, 2023 Category: engine

Why matched: Airworthiness Directives; Continental Aerospace Technologies, Inc., Reciprocating Engines

2023-01-08

final rule

Airworthiness Directives; Continental Aerospace Technologies GmbH Reciprocating Engines

Unsafe Condition: fractured main bearing studs

Effective: Mar 9, 2023 Category: aircraft Compliance: before exceeding the applicable compliance time in Table 1 to paragraph (g)(1) of this AD

Why matched: Airworthiness Directives; Continental Aerospace Technologies GmbH Reciprocating Engines

2023-04-08

final rule

Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines

Unsafe Condition: improper installation and inspection of counterweight retaining rings in the engine crankshaft counterweight groove during manufacture, which may result in loss of retention of the counterweight, l...

Effective: Feb 23, 2023 Category: engine Compliance: Before further flight

Why matched: Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2023-02-12

final rule

Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines With a Certain Superior Air Parts, Inc. Intake Valve Installed

Unsafe Condition: The intake valve material on SAP part number (P/N) SA539988, with lot number 19077 O, was out of specification and did not meet the minimum requirement for elongation, a condition that may cause ru...

Effective: Feb 17, 2023 Category: engine Compliance: Within 30 days from the effective date of this AD

Why matched: Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines With a Certain Superior Air Parts, Inc. Intake Valve Installed

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

2022-04-04

final rule

Airworthiness Directives; Continental Aerospace Technologies, Inc. and Continental Motors Reciprocating Engines

Unsafe Condition: power loss due to oil starvation caused by failure of the fiber gasket due to improperly maintained or installed oil filter adapters

Effective: Mar 29, 2022 Category: aircraft Compliance: Before further flight

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

2020-16-11

final rule

Airworthiness Directives; Continental Aerospace Technologies, Inc. (Type Certificate Previously Held by Continental Motors, Inc.) Reciprocating Engines

Unsafe Condition: reports of in-flight engine failures due to fractured cross-flow cylinder assemblies

Effective: Sep 21, 2020 Category: engine Compliance: Within 50 engine operating hours after the effective date of the AD

Why matched: Airworthiness Directives; Continental Aerospace Technologies, Inc. (Type Certificate Previously Held by Continental Motors, Inc.) Reciprocating Engines

2016-21-04

final rule

Airworthiness Directives; Continental Motors, Inc. Reciprocating Engines

Unsafe Condition: Failure of the oil cooler cross fitting assembly, leading to uncommanded in-flight shutdown (IFSD) and potential engine failure, injuries, and significant airplane damage.

Effective: Nov 18, 2016 Category: engine Compliance: Within 12 months or 100 flight hours after the effective date, whichever occurs first.

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

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2016-16-12

final rule

Airworthiness Directives; Continental Motors, Inc. Reciprocating Engines

Unsafe Condition: Reports of multiple cylinder head-to-barrel separations and cracked and leaking aluminum cylinder heads in certain Continental Motors, Inc., (CMI) San Antonio replacement parts manufacturer approva...

Effective: Sep 15, 2016 Category: engine Compliance: Within a phased removal schedule (details not specified in the provided text).

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

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2014-05-29 Recurring

final rule

Airworthiness Directives; Continental Motors, Inc. Reciprocating Engines With Superior Air Parts, Inc. (SAP) Cylinder Assemblies Installed

Unsafe Condition: Separation of the cylinder head, damage to the engine, and damage to the airplane due to cracks in SAP investment cast cylinder assemblies.

Effective: Apr 25, 2014 Category: engine Compliance: Within the compliance times specified in the AD, unless already done.

Why matched: Airworthiness Directives; Continental Motors, Inc. Reciprocating Engines With Superior Air Parts, Inc. (SAP) Cylinder Assemblies Installed

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

2012-10-13

final rule

Airworthiness Directives; Continental Motors, Inc. (CMI) Reciprocating Engines

Unsafe Condition: Fractures in starter adapter gear shafts in certain additional part number (P/N) CMI starter adapters, which could cause oil scavenge pump failure and engine in-flight shutdown.

Effective: Jun 8, 2012 Category: engine Compliance: Varies based on TIS: before further flight for adapters with less than 75 hours TIS, within 10 ho...

Why matched: Airworthiness Directives; Continental Motors, Inc. (CMI) 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

2011-26-07

final rule

Airworthiness Directives; Teledyne Continental Motors (TCM) and Rolls-Royce Motors Ltd. (R-RM) Series Reciprocating Engines

Unsafe Condition: Migration of the magneto impulse coupling stop pin out of the magneto frame and into the gear train of the engine, potentially leading to engine failure and loss of control of the airplane.

Effective: Jan 24, 2012 Category: engine Compliance: Within 10 flight hours after the effective date of this AD.

Why matched: Airworthiness Directives; Teledyne Continental Motors (TCM) and Rolls-Royce Motors Ltd. (R-RM) Series Reciprocating Engines

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2011-25-51

final rule

Airworthiness Directives; Continental Motors, Inc. (CMI) Reciprocating Engines

Unsafe Condition: Fractures in starter adapter shaft gears in certain part number (P/N) CMI starter adapters, leading to failure of the starter adapter gear shaft, an inoperable oil scavenge pump, and engine in-flig...

Effective: Dec 28, 2011 Category: engine Compliance: Before further flight for adapters with less than 75 hours TIS; within the next 10 hours of engin...

Why matched: Airworthiness Directives; Continental Motors, Inc. (CMI) Reciprocating 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

2010-11-04

final rule

Airworthiness Directives; Teledyne Continental Motors (TCM) 240, 346, 360, 470, 520, and 550 Series and Rolls-Royce Motors, Ltd. (R-RM) IO-240-A Reciprocating Engines

Unsafe Condition: Rapid wear on the face of hydraulic lifters, part numbers 657913, 657915, and 657916, which can result in loss of engine power and loss of control of the airplane.

Effective: Jun 16, 2010 Category: engine Compliance: Before further flight after the effective date of this AD.

Why matched: Airworthiness Directives; Teledyne Continental Motors (TCM) 240, 346, 360, 470, 520, and 550 Series and Rolls-Royce Motors, Ltd. (R-RM) IO-240-A Reciprocating Engines

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

2009-19-06 Recurring

final rule

Airworthiness Directives; Teledyne Continental Motors O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 Series Reciprocating Engines

Unsafe Condition: Cracks in the cylinder head between the upper spark plug bore and the fuel injector/primer nozzle bore due to reduced wall thickness in TCM EQ3 cylinder head casting.

Effective: Oct 7, 2009 Category: engine Compliance: Within 20 flight hours after the effective date of this AD for initial inspections; within 1,300 ...

Why matched: Airworthiness Directives; Boeing Model 747-100, 747-100B, 747- 100B SUD, 747-200B, 747-200F, 747-300, 747-400, 747-400D, 747SP, and 747SR Series Airplanes

Technical illustration of an aircraft turbine engine assembly
Problem area Engine

2009-19-07

final rule

Airworthiness Directives; Teledyne Continental Motors O-470, IO-470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 Series Reciprocating Engines; Correction

Unsafe Condition: The FAA is correcting airworthiness directive (AD) 2009-19-06, which published in the Federal Register on September 22, 2009. That AD applies to Teledyne Continental Motors O-470, IO-470, TSIO-470,...

Effective: Oct 7, 2009 Category: aircraft

Why matched: Airworthiness Directives; Teledyne Continental Motors O-470, IO- 470, TSIO-470, IO-520, TSIO-520, IO-550, and IOF-550 Series Reciprocating Engines