EASA PAD on DA42 Flap Bell Crank Assembly

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Tim H
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EASA PAD on DA42 Flap Bell Crank Assembly

Post by Tim H »

FYI

http://ad.easa.europa.eu/ad/17-042

Cracks and deformation have been found on the flap bell crank Part Number (P/N) D60-2757-11-00. Frequent high load conditions have been identified as the root cause.

To address this potential unsafe condition, Diamond Aircraft Industries (DAI) issued Mandatory Service Bulletin (MSB) 42-126 / MSB 42NG-066 and the corresponding Work Instruction (WI) MSB 42-126 / WI-MSB 42NG-066 (single document), hereafter referred to as ‘the applicable MSB’ in this AD, providing inspection and modification instructions.

For the reason described above, this AD requires modification of the flap control system by installing two spacers to replace a single long spacer, repetitive inspections of the flap bell crank, and, depending on findings, replacement of the flap bell crank with an improved part. Installation of an improved flap bell crank constitutes terminating action for the repetitive inspections required by this AD.
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