Piper has grounded the in-service fleet of M600 single-engine turboprops after production workers identified a section of the aft wing spar that did not meet designed measurement tolerances. Piper notified the FAA of the discrepancy and ordered wing spar inspections to determine if the issue affects other airplanes, according to Piper CEO Simon Caldecott, who provided an update at EAA AirVenture in Oshkosh, Wisconsin, this afternoon.
Wing Spar Issue Grounds Piper M600 Fleet
Key Takeaways:
- Piper has grounded its M600 single-engine turboprop fleet after production workers discovered a vendor-sourced aft wing spar section did not meet design measurement tolerances.
- A mandatory service bulletin has been issued, requiring inspections of the wing spars on all in-service and dealer inventory M600s to determine if other parts are affected.
- The inspection procedure involves draining fuel and measuring the thickness of the aft wing spar on both wings, with the fleet expected to be cleared to fly once parts are confirmed to be within tolerance.
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