Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 20; Flight Crew Total 1054; Flight Crew Type 1054
Time Pressure; Situational Awareness; Human-Machine Interface; Distraction; Troubleshooting; Workload
Aircraft Equipment Problem Less Severe
General None Reported / Taken
Software and Automation; Aircraft; Environment - Non Weather Related
On final approach in IMC; ILS 35L at DEN; XA:45 MST. After configuring the airplane for final approach; we had an alert message with associated Master Caution [warning]. The alert message was for NAV ADS-B RPTG 1 Fault. It came on and off several times. We complied with the QRH procedure and switched the Transponder to position 2. It failed several more times with a Master Caution. Several aircraft on approach were reporting the same issue and ATC said that had been hearing about it all day with no explanation.
Air Carrier First Officer reported on final approach to Runway 35L in DEN the Master Caution warning sounded for the loss of GPS and ADS-B. Informing DEN ATC; the pilots were told it had been occurring all day.