AD 2020-08-02
Unsafe Condition
The Thales Topstar 200 LPV GPS/SBAS receiver may provide an erroneous position on its outputs, which may not be detected by the integrity check. Depending on the aircraft installation, this error may not be noticed by the flight crew.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Update the navigation database of LPV procedures and all RNP-AR procedures in SBAS areas, listed in the SIL. For certain ATR aeroplanes, amend the applicable AFM.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Thales AVS France SAS (Thales) Global Positioning System/Satellite Based Augmentation System (GPS/SBAS) receivers, Topstar 200 LPV, part numbers (P/Ns) C17149JA02 and C17149HA01, installed on GIE Avions de Transport R[eacute]gional model ATR42 airplanes and Sikorsky Aircraft Corporation model S-76D helicopters of U.S. registry.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.