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AD: Bell Helicopter Textron, Inc. (Bell) Helicopters

AD NUMBER: 2018-17-01

PRODUCT: Bell Model 212 and 412 helicopters.

ACTION: Final rule; request for comments.

SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2017-15-02 for the aircraft listed above.

AD 2017-15-02 required replacing certain oil and fuel check valves and prohibited installing them on any helicopter. This AD retains the requirements of AD 2017-15-02 and adds certain model helicopters to the applicability.

This AD was prompted by the discovery of an error in the affected models.

DATES: This AD is effective September 5, 2018. Comments must be received by October 5, 2018.

COST: The FAA estimates that this AD affects 161 (59 Model 212 and 102 Model 412) helicopters of U.S. Registry. The cost of compliance is estimated as follows:

  • At an average labor rate of $85, replacing each check valve (engine oil or fuel) will require about 1 work-hour, and required parts will cost $85. For the Model 212, the FAA estimates a total cost of $340 per helicopter. For the Model 412, the agency estimates a total cost of $170 per helicopter.
FMI: AD

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