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Wed, May 06, 2015

EASA AD: Arriel 1E2 engines

Ruptured Front Support Pins Found During Regular Maintenance

EASA has issued an AD for all Arriel 1E2 turbo-shaft engines. These engines are known to be installed on, but not limited to, Airbus Helicopters Deutschland (formerly Eurocopter Deutschland) MBB-BK117-C1 and MBB-BK117-C2 helicopters.

EASA says that cases were reported of finding ruptured front support pins on Arriel 1E2 engines. The ruptured pins were detected either during accomplishment of a maintenance task or during inspection prompted by abnormal vibrations in flight.

This condition, if not detected and corrected, could lead to the loss of the load path integrity of the engine front support.

To address this unsafe condition, Turboméca issued Mandatory Service Bulletin (MSB) 292 72 0842 version A to provide instructions for the inspection of the pins and front support replacement.

For the reason described above, this AD requires repetitive inspections of front support pins and, if a pin is found ruptured, replacement of the front support.

FMI: AD http://ad.easa.europa.eu/ad/2015-0064

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