PRODUCT: Sikorsky Aircraft Corporation (Sikorsky) Model 269D and Model 269D Configuration A helicopters.
ACTION: Final Rule.
SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2017-07-02 for the aircraft listed above.
AD 2017-07-02 required reducing the life limit of and inspecting certain drive shafts. This new AD retains the requirements of AD 2017-07-02 and requires repeating the inspections.
DATES: This AD is effective March 5, 2018.
COST: The FAA estimates that this AD will affect 18 helicopters of U.S. Registry. Operators may incur the following costs in order to comply with this AD:
Removing the engine side and pulley side drive shafts that have reached the new life limit will take about 4 work-hours for a cost of $340 per helicopter.
Inspecting the lower pulley to engine alignment using the belt alignment tool will take about 0.5 work-hour for an estimated cost of $43 per helicopter and $774 for the U.S. fleet per inspection cycle.
Adjusting the engine elevation alignment will take about 0.5 work-hour for an estimated cost of $43 per helicopter.
Inspecting the drive shaft alignment by checking spline engagement will take about 1 work-hour for a cost of $85 per helicopter and $1,530 for the U.S. fleet per inspection cycle.
Inspecting the drive shafts for damage will take about 1 work-hour for an estimated cost of $85 per helicopter and $1,530 for the U.S. fleet per inspection cycle.
Inspecting the joints will take about 1 work-hour for an estimated cost of $85 per helicopter and $1,530 for the U.S. fleet per inspection cycle.
Replacing the engine side and pulley side drive shafts, if required, will take about 8 work-hours and parts will cost about $20,000, for an estimated cost of $20,680 per helicopter
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