Many small UAS use an onboard GPS device to report the aircraft's groundspeed and altitude to the remote pilot. If the aircraft loses its GPS signal during flight, the most direct consequence is that —
Why: AC 107-2A describes GPS devices as a means of reporting a small UA's groundspeed and altitude to the remote pilot (§§ 5.12.1–5.12.2). Losing the GPS signal during flight removes that position, groundspeed, and altitude information, so the remote pilot must rely on other means to maintain safe, compliant flight.
Invents an automatic grounding consequence; AC 107-2A does not state that a lost GPS signal takes the aircraft out of service.
Invents a certificate-suspension consequence; losing a GPS signal in flight has no bearing on the validity of the remote pilot's certificate.