Airworthiness Directive 2002-19-03
one-timeAirworthiness Directives; Textron Lycoming IO-540, LTIO-540 and TIO-540 Series Reciprocating Engines
What this AD requires
This amendment supersedes emergency airworthiness directive (AD) 2002-17-53 that was sent previously to all known U.S. owners and operators of Textron Lycoming LTIO-540 and TIO-540 series engines, rated at 300 horsepower (HP) or higher. That action requires, before further flight, replacing certain serial-numbered crankshafts that were hammer forged with crankshafts that were press forged. That AD was prompted by reports of crankshaft failures in LTIO-540 and TIO-540 engines, rated at 300 HP or higher. This amendment expands the suspect population of engines to include engines with crankshafts that were manufactured between March 1997 and the present and all IO-540 engines with crankshafts that were manufactured between March 1997 and the present that have been modified by supplemental type certificate (STC) by installing a turbocharger system. The actions specified by this AD are intended to prevent failure of the crankshaft, which could result in total engine power loss, in-flight engine failure and possible forced landing.
Which aircraft AD 2002-19-03 applies to
AD addresses crankshaft failure risk in LTIO-540 and TIO-540 engines rated 300 HP or greater, and in IO-540 engines modified by STC with a turbocharger, plus any engine manufactured, overhauled, or crankshaft-replaced after 1997-03-01; specific affected serial numbers are listed in Lycoming MSB No. 552 (dated 2002-08-16) Tables 1-3, embedded as graphics/images not machine-readable in retrieved text; required action (crankshaft removal vs. material testing within 10 or 50 hours TIS) depends on which table the engine serial number appears in.
Whether AD 2002-19-03 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Read the full directive (Federal Register)Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.