PRODUCT: Airbus Helicopters Deutschland GmbH (Airbus Helicopters) Model MBB-BK 117 C-2 helicopters.
ACTION: Final Rule.
SUMMARY: This AD requires establishing or reducing the life limit of various parts.
This AD was prompted by recalculations.
DATES: This AD is effective August 2, 2019.
COST: The FAA estimates that this AD affects 128 helicopters of U.S. Registry. Operators may incur the following costs in order to comply with this AD:
Labor costs are estimated at $85 per hour.
Replacing a nut takes about 5 work-hours and parts cost about $3,736 for an estimated replacement cost of $4,161.
Replacing a quadruple nut upper takes about 5 work-hours and parts cost about $3,682 for an estimated replacement cost of $4,107.
Replacing a quadruple nut lower takes about 5 work-hours and parts cost about $3,819 for an estimated replacement cost of $4,244.
Replacing a bolt takes about 2 work-hours and parts cost about $418 for an estimated replacement cost of $588.
Replacing an inner sleeve takes about 2 work-hours and parts cost about $20,826 for an estimated replacement cost of $20,996.
Replacing a control ring assembly takes about 5 work-hours and parts cost about $11,500 for an estimated replacement cost of $11,925.
Replacing a bellcrank-K (collective) takes about 4 work-hours and parts cost about $3,400 for an estimated replacement cost of $3,740.
Replacing a control rod tube takes about 4 work-hours and parts cost about $1,197 for an estimated replacement cost of $1,537.
Replacing a forked lever takes about 3 work-hours and parts cost about $6,138 for an estimated replacement cost of $6,393.
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