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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.

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

Airworthiness Directives; Lycoming Engines Reciprocating Engines

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

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

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.

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

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.

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

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.

Why matched: Airworthiness Directives; Lycoming Engines Reciprocating Engines

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.

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

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...

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

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.

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

Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, and LO-360 Series Reciprocating Engines

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

Why matched: Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, and LO-360 Series Reciprocating Engines

Airworthiness Directives; Honeywell International Inc. (Formerly AlliedSignal, Inc., Formerly Textron Lycoming, Formerly Avco Lycoming) T5309, T5311, T5313B, T5317A, T5317A-1, and T5317B Series, and T53-L-9, T53-L-11, T53-L-13B, T53-L-13BA, T53-L-13B S/SA, T53-L-13B S/SB, T53-L-13B/D, and T53-L-703 Series Turboshaft Engines

Unsafe Condition: Failure of certain compressor, gas producer, and power turbine rotating components, which could result in failure of the engine and possible damage to the helicopter.

Why matched: Airworthiness Directives; Honeywell International Inc. (Formerly AlliedSignal, Inc., Formerly Textron Lycoming, Formerly Avco Lycoming) T5309, T5311, T5313B, T5317A, T5317A-1, and T5317B Series, and T53-L-9, T53-L-11, T53-L-13B, T53-L-13BA, T53-L-13B S/SA, T53-L-13B S/SB, T53-L-13B/D, and T53-L-703 Series Turboshaft Engines

Airworthiness Directives; Honeywell International Inc. (Formerly AlliedSignal, Inc., Formerly Textron Lycoming, Formerly Avco Lycoming) T5309, T5311, T5313B, T5317A, T5317A-1, and T5317B Series, and T53-L-9, T53-L-11, T53-L-13B, T53-L-13BA, T53-L-13B S/SA, T53-L-13B S/SB, T53-L- 13B/D, and T53-L-703 Series Turboshaft Engines

Unsafe Condition: Failure of certain compressor, gas producer, and power turbine rotating components due to lower calculated service life limits than previously published.

Why matched: Airworthiness Directives; Honeywell International Inc. (Formerly AlliedSignal, Inc., Formerly Textron Lycoming, Formerly Avco Lycoming) T5309, T5311, T5313B, T5317A, T5317A-1, and T5317B Series, and T53-L-9, T53-L-11, T53-L-13B, T53-L-13BA, T53-L-13B S/SA, T53-L-13B S/SB, T53-L- 13B/D, and T53-L-703 Series Turboshaft Engines

Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 Series Reciprocating Engines

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

Why matched: Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 Series Reciprocating Engines

Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines

Unsafe Condition: Failure of zinc-plated crankshaft gear retaining bolts could lead to loss of all engine power and possible forced landing.

Why matched: Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines

Airworthiness Directives; Textron Lycoming Division, AVCO Corporation Fuel Injected Reciprocating Engines.

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

Why matched: Airworthiness Directives; Textron Lycoming Division, AVCO Corporation Fuel Injected Reciprocating Engines.

Airworthiness Directives; Textron Lycoming AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines

Unsafe Condition: Failure of zinc-plated crankshaft gear retaining bolts can lead to loss of all engine power and possible forced landing.

Why matched: Airworthiness Directives; Textron Lycoming AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines

Airworthiness Directives; Honeywell International, Inc., (Formerly AlliedSignal, Inc. and Textron Lycoming) LF507 and ALF502R Series Turbofan Engines

Unsafe Condition: Separation of the combustor dome baffle from the combustion chamber liner assembly, leading to engine combustion chamber liner assembly burn through.

Why matched: Airworthiness Directives; Honeywell International, Inc., (Formerly AlliedSignal, Inc. and Textron Lycoming) LF507 and ALF502R Series Turbofan Engines