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FAA Issues Emergency Airworthiness Directive for 957 Lycoming Engines Over Microcracked Piston Pins - Tech Times

Detected August 28, 2026 · in Aviation Maintenance & Airworthiness (FAA)

FAA issued an emergency airworthiness directive affecting 957 Lycoming engines due to microcracked piston pins, requiring immediate inspection and potential replacement.

Aforeworn detected this change in the Aviation Maintenance & Airworthiness (FAA) space on August 28, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Critical. Operators and repair stations maintaining Lycoming engines (Part 145 repair stations, Part 135/121 operators, flight schools, corporate flight departments). should confirm how it applies to their specific situation before acting. There is a time constraint attached: Immediate (emergency AD, effective upon issuance).. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Aviation Maintenance & Airworthiness (FAA) continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.

What changed

An emergency AD mandates immediate action to address microcracked piston pins in 957 Lycoming engines.

Who it affects

Operators and repair stations maintaining Lycoming engines (Part 145 repair stations, Part 135/121 operators, flight schools, corporate flight departments).

What you must do

Comply with the AD by inspecting and, if necessary, replacing affected piston pins before further flight.

Deadline

Immediate (emergency AD, effective upon issuance).

Source: https://news.google.com/rss/articles/CBMi5AFBVV95cUxOMTlhNDBuanpSdGtxWWFKT2otZnJXRThIYThpcFVaSlJNSVRkOWVrSlJhSXBENUZiMldJMG45Z1VMYkNaaVZhekh0VVBtVWJrY3R4ZVpWSkFBazBEdGV1OEw0bnRpdWRqbkhvTUNxOVpXVlJMeUNZQUpaQW5JUDUtSjhGQUR5Yk9JZksxWE53RjlQbzZKQmR3QlNyLXJrRUo5bi04OUtUODlmVFRtaWdndnllVHNweHVhdzdYOUE1dkltS0pIMFNDamtfb3JtMy1NckhGTXg3X3BOQVY4NS0zRzNQTno?oc=5

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