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Wed, Apr 03, 2019

AD: Airbus Helicopters Deutschland GmbH Helicopters

AD NUMBER: AD 2019-06-05

PRODUCT: Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model MBB-BK 117 A-1, MBB-BK 117A-3, MBB-BK 117 A-4, MBB-BK 117 B-1, MBB-BK 117 B-2, MBB-BK 117 C-1, and MBB-BK 117 C-2 helicopters.

ACTION: Final rule.

SUMMARY: This AD requires repetitive inspections of the tail rotor (T/R) gearbox housing.

This AD was prompted by a report that a crack was found in a T/R gearbox housing.

DATES: This AD is effective May 7, 2019.

COST OF COMPLIANCE: The FAA has determined that this AD affects 176 helicopters of U.S. Registry. Operators may incur the following costs to comply with this AD.

Labor costs average $85 per work-hour. Based on these estimates, The FAA expects the following costs:

  • Inspecting the T/R gearbox requires 1 work-hour for an estimated cost of $85 per helicopter per inspection cycle.
  • Replacing the T/R gearbox requires 4.5 work-hours and parts cost $69,219 for an estimated cost of $69,602 per helicopter.
FMI: AD

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