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February 2017

Hang Bolt plus Lanyard - Inspection / Replacement

All Microlights of the following types where P & M Aviation Ltd are the Type Approval Holder:

  • BM44 Pegasus Quasar 2 TC
  • BM46 Pegasus Quantum 15
  • (Rotax 2-stroke engines)
  • BM50 Pegasus Quantum 15-912
  • BM56 Pegasus Quantum 15-HKS
  • BM66 Pegasus Quik
  • BM70 Quik GT450
  • BM77 QuikR
  • BM80 Quik GTR
  • BM81 PulsR

The lanyard on a hang bolt plus lanyard component was found to be under swaged which allowed it to detach at a low load. The lanyard is essential to stop the hang bolt pinch nut from slackening off. Should the pinch nut fall off there would not be anything to prevent the hang bolt from potentially migrating out of its housing and the wing would

then detach. This problem was identified as a manufacturing deficiency of part number YQB-31302 and affected three batches of the component: A9835, A9868 and A9880.

CLICK HERE TO SEE THE FULL REPORT.