Air carrier Captain reported receiving an ATC fault and loss of GPS signals shortly after being informed by ATC that several aircraft were experiencing similar problems in the area. After moving further away from the area; the flight crew began to receive normal GPS signals again and there were no issues for the rest of the flight.

Date: 2025-05 · Aircraft: Commercial Fixed Wing · Phase: cruise

Anomalies: aircraft-equipment-problem-less-severe

Synopsis

Air carrier Captain reported receiving an ATC fault and loss of GPS signals shortly after being informed by ATC that several aircraft were experiencing similar problems in the area. After moving further away from the area; the flight crew began to receive normal GPS signals again and there were no issues for the rest of the flight.

Narrative

During cruise at FL370 just past SJN VOR; we were told by Albuquerque Center that several aircraft were experiencing a GPS loss of signal. Shortly after; we received an ATC FAULT on the EICAS. We ran the checklist; which directed us to switch to transponder #2 and that did not solve the problem. We noticed that we were not receiving any GPS signals. We then referenced the GPS RADIO FREQUENCY INTERFERENCE Bulletin and ran the GPS Data Unreliable Checklist. This directed us to inhibit the GPS and GPWS. We notified Dispatch via ACARS and ATC and gave ATC a position report with next position being CIM VOR. We then referenced raw navigational data as a backup to ensure we were still on course; which we were. As we progressed towards CIM and further away from that area; we began receiving normal GPS signals again. Once clear of ZAB UIR; and ensuring that our GPS signals were correct; we reselected GPS back on and enabled the GPWS as per the bulletin. No further issues for the rest of the flight.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.