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AD: NavWorx, Inc. ADS-B Universal Access Transceiver Units

AD NUMBER: 2017-11-11

PRODUCT: NavWorx, Inc. (NavWorx), Automatic Dependent Surveillance Broadcast (ADS-B) Universal Access Transceiver Units (unit).

ACTION: Final Rule

SUMMARY: This AD requires removing, disabling, or modifying the ADS-B unit. This AD was prompted by a design change that results in the unit communicating unreliable position information. The actions in this AD are intended to address an unsafe condition on these products.

The FAA estimates that this AD affects approximately 800 ADS -B units installed on various aircraft of U.S. registry. Operators may incur the following costs in order to comply with this AD based on an 14 average labor rate of $85 per work- hour. Removing the ADS -B unit, disabling the ADS -B unit, or revising the software of the ADS -B unit will take about 1 work- hour, for a total of $85 per aircraft. Coupling the ADS -B unit with an approved external GPS will take about 4 work- hours for a total of $340 per aircraft.

DATES: This AD is effective July 11, 2017.

FMI: AD

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