Airworthiness Directive · Amendment 39-23454 · Lycoming Engines Engines
Lycoming Engines Engines
This AD applies to Lycoming Engines O-235, O-235-A, O-235-AP, O-235-B, O-235-BP, O-235-C, O-235-C1, O-235-C1A, O-235-C1B, O-235-C1C, O-235-C2A, O-235-C2B, O-235-C2C, O-235-E1, O-235-E1B, O-235-E2A, O-235-E2B, O-235-F1, O-235-F1B, O-235-F2A, O-235-F2B, O-235-G1, O-235-G1B, O-235-G2A, O-235-G2B, O-235-H2C, O-235-J2A, O-235-J2B, O-235-K2A, O-235-K2B, O-235-K2C, O-235-L2A, O-235-L2C, O-235-M1, O-235-M2C, O-235-M3C, O-235-N2A, O-235-N2C, O-235-P1, O-235-P2A, O-235-P2C, O-235-P3C, O-540-A1A, O-540-A1A5, O-540-A1B5, O-540-A1C5, O-540-A1D, O-540-A1D5, O-540-A2B, O-540-A3D5, O-540-A4A5, O-540-A4B5, O-540-A4C5, O-540-A4D5, O-540-A4E5, O-540-B1A5, O-540-B1B5, O-540-B1D5, O-540-B2A5, O-540-B2B5, O-540-B2C5, O-540-B4A5, O-540-B4B5, O-540-D1A5, O-540-E4A5, O-540-E4B5, O-540-E4C5, O-540-F1A5, O-540-F1B5, O-540-G1A5, O-540-G2A5, O-540-H1A5, O-540-H1A5D, O-540-H1B5D, O-540-H2A5, O-540-H2A5D, O-540-H2B5D, O-540-J1A5D, O-540-J1B5D, O-540-J1C5D, O-540-J1D5D, O-540-J2A5D, O-540-J2B5D, O-540-J2C5D, O-540-J2D5D, O-540-J3A5, O-540-J3A5D, O-540-J3C5D, O-540-L3C5D, IO-540-A1A5, IO-540-AA1A5, IO-540-AA1B5, IO-540-AB1A5, IO-540-AE1A5, IO-540-AC1A5, IO-540-AF1A5, IO-540-B1A5, IO-540-AG1A5, IO-540-B1B5, IO-540-B1C5, IO-540-C1B5, IO-540-C1C5, IO-540-C2C, IO-540-C4B5, IO-540-C4B5D, IO-540-C4C5, IO-540-C4D5, IO-540-C4D5D, IO-540-D4A5, IO-540-D4B5, IO-540-D4C5, IO-540-E1A5, IO-540-E1B5, IO-540-E1C5, IO-540-G1A5, IO-540-G1B5, IO-540-G1C5, IO-540-G1D5, IO-540-G1E5, IO-540-G1F5, IO-540-J4A5, IO-540-K1A5, IO-540-K1A5D, IO-540-K1B5, IO-540-K1B5D, IO-540-K1C5, IO-540-K1D5, IO-540-K1E5, IO-540-K1E5D, IO-540-K1F5, IO-540-K1F5D, IO-540-K1G5, IO-540-K1G5D, IO-540-K1H5, IO-540-K1J5, IO-540-K1J5D, IO-540-K1K5, IO-540-K2A5, IO-540-L1A5, IO-540-L1A5D, IO-540-L1B5D, IO-540-L1C5, IO-540-M1A5, IO-540-M1A5D, IO-540-M1B5D, IO-540-M1C5, IO-540-M2A5D, IO-540-N1A5, IO-540-P1A5, IO-540-R1A5, IO-540-S1A5, IO-540-T4A5D, IO-540-T4B5, IO-540-T4B5D, IO-540-T4C5D, IO-540-U1A5D, IO-540-U1B5D, IO-540-V4A5, IO-540-V4A5D, IO-540-W1A5, IO-540-W1A5D, IO-540-W3A5D.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
The FAA is adopting a new airworthiness directive (AD) for certain Lycoming Engines (Lycoming) Model O-235, O-540, and IO-540 engines with a certain piston pin installed. This AD was prompted by several reports of piston pin failure that resulted in metal particulate contamination in the engine oil and engine failure. This AD requires replacement of the affected piston pin with a part eligible for installation and, for certain engines, oil change and visual inspection of the engine oil filter, oil pressure screen, and oil suction screen for metal particulates. This AD also prohibits the installation of an affected piston pin on any engine. The FAA is issuing this AD to address the unsafe condition on these products.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
