Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Less Severe; Conflict Airborne Conflict
General None Reported / Taken
Environment - Non Weather Related; Aircraft
No GPS signal on KLN-90B; followed by a confirmation of no GPS via EFB (iPads). Reported to ATC. Other aircraft followed up with more reports. Transponder remained operative but was reported failing in other airplanes. Air Carrier Y aircraft was also seen and reported possibly performing a 'resolution advisory'. The collision path never appeared to show imminent need for reaction. Our TCAS never indicated closer than 1000' in any direction. Not confirmed if the events were related. Still really strange hearing Air Carrier Y on ATC at the same time as GPS outages. GPS failure in our aircraft as well as other aircraft in vicinity. Other aircraft experienced Transponder and GPS full loss of signal.
Air carrier First Officer reported a possible conflict and loss of GPS on approach to DEN.