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Air carrier flight crew reported a temporary failure of both GPS in the vicinity of tph VOR. After the systems recovered; the crew elected to refuse the RNAV approach and requested vectors from ATC.
| Attributes | |
| ACN | 1464822 |
| Time | |
| Date | 201707 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZOA.ARTCC |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | GPS & Other Satellite Navigation |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Type 143 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Type 1387 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Track / Heading All Types Inflight Event / Encounter Other / Unknown |
Narrative:
Both GPS failed; ATC queried us as to our navigation; showing us going south of course. We asked for vectors. Later; when both GPS recovered; we still refused to accept clearance for the RNAV arrival; opting instead for vectors.
Original NASA ASRS Text
Title: Air carrier flight crew reported a temporary failure of both GPS in the vicinity of TPH VOR. After the systems recovered; the crew elected to refuse the RNAV approach and requested vectors from ATC.
Narrative: Both GPS failed; ATC queried us as to our navigation; showing us going south of course. We asked for vectors. Later; when both GPS recovered; we still refused to accept clearance for the RNAV arrival; opting instead for vectors.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.