B737 pilot reported suspected GPS jamming at this location.

Attributes
ACN	1750165
Time
Date	202007
Local Time Of Day	1201-1800
Place
Locale Reference	ZFW.ARTCC
State Reference	TX
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	IFR
Component
Aircraft Component	Flight Dynamics Navigation and Safety
Person 1
Function	Pilot Flying
Qualification	Flight Crew Commercial Flight Crew Instrument Flight Crew Multiengine Flight Crew Private
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

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.

Original NASA ASRS Text

Title: B737 Pilot reported suspected GPS jamming at this location.

Narrative: 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.

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.