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EASA issues emergency AD for stabilizer inspection of Sukhoi Superjet aircaft
22 July 2017

The European Aviation Safety Agency (EASA) issued an emergency airworthiness directive, requiring inspection of the horizontal stabilizer for cracks.

EASA reported that cracks were found on Sukhoi Superjet 100-95B aeroplanes in service in the rear spar of the horizontal stabilizer between ribs 0, 1 and 2.

The AD requires operators to accomplish a borescope inspection of the horizontal stabilizer rear spar web cut-out between ribs 0-1 and 1-2 before exceeding 1300 flight cycles since first flight, or before July 29, whichever occurs later. Thereafter, the inspection must be repeated at intervals not to exceed 300 flight cycles.

Should an operator detect any crack, fastener failure, or corrosion, it must contact Sukhoi Civil Aircraft before next flight, for approved repair instructions.

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