Commercial Fixed Wing
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Last 90 Days 90
Situational Awareness; Workload; Human-Machine Interface; Distraction
Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert; Flight Crew Requested ATC Assistance / Clarification
Software and Automation; Airspace Structure; Chart Or Publication; Human Factors; Procedure
ATC had assigned us an earlier timed descent to FL290 requiring a 2;000 FPM descent. Pilot Flying selected Vertical Speed mode to meet the descent. Prior to leveling; ATC revised the clearance to descent via the RNAV Arrival and delete the speeds. Both pilots confirmed the bottom altitude of the arrival at 13;000 feet; but failed to confirm the descent mode was in VNAV. Pilot Flying became distracted with updating the speeds on the arrival and did not see the aircraft was still descending in Vertical Speed mode. Upon passing 14;000 feet; the Pilot Flying realized the aircraft was below the arrival descent profile and began reversing the descent. About the same time ATC called to query our altitude as we had descended below their Minimum Vectoring Altitude. We were issued a climb back to 14;000 feet which we complied with and then a vector off the arrival to final and further descent. The rest of the arrival was without incident.
[Report narrative contained no additional information.]
Air Carrier flight crew reported they descended below their assigned altitude during descent to DEN and ATC advised them they were below the Minimum Vectoring Altitude.