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AD: Airbus Helicopters

AD NUMBER: 2018-19-10

PRODUCT: Airbus Helicopters Model AS355E, AS355F, AS355F1, AS355F2, and AS355N helicopters.

ACTION: Final Rule.

SUMMARY:  This AD requires measuring a vibration level in the tail rotor (T/R) drive.

This AD was prompted by reports of bearing degradation

DATES: This AD is effective October 30, 2018.

COST: The FAA estimates that this AD affects 104 helicopters of U.S. Registry. The cost of compliance is estimated as follows:
At an average labor rate of $85 per work-hour, measuring the vibration levels requires about 5 work-hours, for a cost of $425 per helicopter and $44,200 for the U.S. fleet. If required, replacing both fan assembly bearings requires about 8 work-hours, and required parts cost $1,064, for a cost of $1,744 per helicopter.

FMI: AD

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