EASA AD US-2022-03-09
Navigation - Global Positioning System Receiver - Replacement
The Federal Register document titled "Navigation - Global Positioning System Receiver - Replacement" is a final rule airworthiness directive (AD) issued by the FAA affecting Sikorsky Aircraft Corporation Model S-76D helicopters equipped with Thales GPS TopStar 200 LPV receivers, part number C17149HA01. The AD addresses erroneous position outputs from these GPS receivers under certain conditions, which could compromise flight safety. It mandates replacement of the affected GPS receivers to ensure continued safe operation of the helicopters.
Airworthiness DirectiveMaintenanceSafety MgmtSikorsky S-76Sikorsky S-76D