Small Aircraft; Low Wing; 1 Eng; Retractable Gear
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Instructor; Flight Crew Multiengine
Flight Crew Last 90 Days 30; Flight Crew Type 1600
Communication Breakdown; Confusion; Distraction; Human-Machine Interface; Situational Awareness; Troubleshooting; Workload
Aircraft Equipment Problem Less Severe
Flight Crew Requested ATC Assistance / Clarification
ATC Equipment / Nav Facility / Buildings; Aircraft
Enroute at 2;000 feet when I received a message on GPS and EFIS saying RNAV signal is lost; ADS-B is lost. iPad does not show correct location. No problem because VMC and not going anywhere. No navigation and no traffic. I called Approach Control to ask if they knew of any GPS outages. They said they hadn't and nobody else was having a problem. After landing; about 20 minutes later the system was back to normal. Another pilot had the same experience. Called Approach Control again on the landline and they advised that they had gotten several reports but they had no prior record of it and they should have been advised that Navy was doing testing offshore. There were no local NOTAMs and when I went back to look; there was a NOTAM for the outage lasting for about a week at various times for Center. Send [a] NOTAM to all Approach Controls that underlie testing area and also to local airports so that flights that never touch overlying airspace are aware of possible outage. They should also be sent to EFB providers so they can include it in their system. Had this occurred in IMC it would have spiked the workload considerably and only VHF navigation would have worked.
A Pilot reported GPS interference.