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A cessna citation captain reported a loss of GPS signal and satellite coverage along V139 over W-107B at 17;000 feet. GPS function returned a short time later.
| Attributes | |
| ACN | 1353343 |
| Time | |
| Date | 201605 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZNY.ARTCC |
| State Reference | NY |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Cessna Citation Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Airway V139 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | GPS & Other Satellite Navigation |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 6110 Flight Crew Type 850 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Inflight Event / Encounter Other / Unknown |
Narrative:
While cruising at 17;000 feet in IMC along V139 over warning area W-107B near manta intersection; the FMS message indicator came on and the FMS reported 'position uncertain' and 'dead reckoning mode'. A check of the navigation sensors showed no gnss (GPS) position. The FMS then requested that certain vors be manually tuned on NAV1. The crew reported the loss of RNAV capability to new york ARTCC. The crew switched to conventional (VOR) navigation and continued the flight to the destination.
Original NASA ASRS Text
Title: A Cessna Citation Captain reported a loss of GPS signal and satellite coverage along V139 over W-107B at 17;000 feet. GPS function returned a short time later.
Narrative: While cruising at 17;000 feet in IMC along V139 over Warning Area W-107B near MANTA intersection; the FMS message indicator came on and the FMS reported 'position uncertain' and 'dead reckoning mode'. A check of the navigation sensors showed no GNSS (GPS) position. The FMS then requested that certain VORs be manually tuned on NAV1. The crew reported the loss of RNAV capability to New York ARTCC. The crew switched to conventional (VOR) navigation and continued the flight to the destination.
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.