Some Lycoming aircraft engines now require regular oil inspections to prevent engine failure
What happened
The US aviation regulator now requires owners of certain Lycoming aircraft engines to perform repetitive oil inspections. If metal particles are found, they must inspect and replace connecting rod bushings to prevent engine failure.
Why it matters
This rule means aircraft owners and operators with these specific Lycoming engines now have a new, mandatory maintenance task. It shifts the burden of detecting a known engine flaw from the manufacturer to the operator. This type of directive is common in aviation, where safety issues with specific parts often lead to new inspection or replacement requirements.
The signal
Watch for reports of how many engines are found to have issues during these inspections, and whether the rate of in-flight shutdowns for these engines decreases over the next year.