MRO (Maintenance, Repair & Overhaul)   General Aviation   Aviation Safety & Regulation  

FAA Issues Airworthiness Directive for Lycoming Engines Over Defective Piston Pins

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The FAA has issued an airworthiness directive covering Lycoming O-235, O-540 and IO-540 engines after identifying defective piston pins. The directive creates a compliance requirement for operators and maintenance providers, with potential implications for general aviation safety, maintenance scheduling and aircraft availability.

Discovered 2026-09-04T07:06:36.366843-07:00 | 2026-09-04T07:06:36.366843-07:00

Briefing

What Hype is tracking

  • The directive applies to three widely used Lycoming engine families, creating a compliance and maintenance-planning issue for affected general aviation operators.
  • It follows two engine failures linked to the same piston-pin concern, underscoring the operational consequences of a component-level airworthiness action.
  • Operators and maintenance providers must account for inspections or corrective work when assessing aircraft availability and scheduling.

Reported By

Flying Magazine
Sources Tracked
1
First Seen
2026-09-04T07:06:36.366843-07:00
Latest Update
2026-09-04T07:06:36.366843-07:00
Coverage
Aviation

Sources

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