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AD: Leonardo S.p.A. 189 Helicopters

AD NUMBER: 2018-19-08

PRODUCT: Leonardo S.p.A. (Leonardo) Model AW189 helicopters.

ACTION: Final Rule.

SUMMARY: This AD requires inspecting the tail gearbox (TGB) fitting for a crack.

This AD was prompted by a report of a crack on a TGB fitting that was found during a scheduled inspection.

DATES: This AD is effective October 26, 2018.

COST: The FAA estimates that this AD affects 4 helicopters of U.S. Registry. The cost of compliance is estimated as follows:

Labor costs average $85 per work-hour. Inspecting the TGB fitting requires 4 work-hours and no parts for a cost per helicopter of $340 and $1,360 for the U.S. fleet each inspection cycle.
Replacing the TGB fitting requires 48 work-hours and parts cost $30,000 for a cost of $34,080 per helicopter.

According to Leonardo Helicopters' service information, some of the costs of this AD may be covered under warranty, thereby reducing the cost impact on affected individuals.

FMI: AD

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