B737 Undifferentiated or Other Model
Flight Crew Commercial; Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Private
Troubleshooting; Confusion; Situational Awareness
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
ATC Equipment / Nav Facility / Buildings; Aircraft; Airspace Structure; Environment - Non Weather Related
Enroute just west of LBB in southern New Mexico we received significant GPS jamming and then apparently spoofing.  Both GPS units lost position; and then later they showed position; but position determined by NAVAIDs was different than GPS position.  Multiple other aircraft reported same issue transiting the area.  Luckily we were only 'direct to a fix' so our navigation westbound was not significantly affected.  However; our transponder failed at one point (had a fail light); presumably because of a problem with ADS-B and no GPS signal. Military jamming and spoofing GPS.  Position not exact.  Could cause ATC problems with loss of ADS-B. Limit GPS jamming and spoofing to non-daylight; low volume hours to avoid loss of ATC services; navigation; and ability to use RNAV navigation in short term.  In long term; develop a back up navigation system; such as E-LORAN for navigation when GPS not available.
B737 Pilot reported suspected GPS jamming at this location.