Action
Final rule.
Summary
The FAA is adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD requires modifying the wiring of the attitude and heading reference system (AHRS) connector. This AD was prompted by a report of wiring of the AHRS contrary to approved design specifications. The actions of this AD are intended to address an unsafe condition on these products.