Workload; Human-Machine Interface; Time Pressure; Distraction
Aircraft Equipment Problem Critical; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance; Flight Deck / Cabin / Aircraft Event Other / Unknown
Air Traffic Control Issued New Clearance; Flight Crew Returned To Clearance
Chart Or Publication; Human Factors; Procedure; Weather; Aircraft
Our routing into DEN was filed on the PEEKK RNAV STAR via OURAY transition. Upon switching to ZDV (DEN Center); we were cleared onto the LDORA1 arrival. With some low level convective activity ahead on the arrival; we were expecting to ask for some slight deviations for weather. We switched to the next ZDV sector; and we were given a left turn heading 340 degrees for en route spacing. Several minutes later we were cleared to intercept the TELLR1 arrival. Shortly thereafter ZDV tells us: '...cleared to deviate up to 15 degrees either side of course; and descend via the TELLR1 arrival.' By this time we were both heads down for most of the descent reprogramming and verifying all the new route changes; as well as the new constraints. ZDV handed us off to DEN TRACON at FL250; and we were then issued to proceed direct POWDR direct DVV; and to descend and maintain 17;000. We were then cleared to deviate at our discretion for weather avoidance to DVV. Normal radar vectors and altitudes from the mid-teens to landing were then provided by TRACON. Also; we twice experienced airspeed anomalies during the managed descent. The FMGC and charted speeds were not being followed correctly by the airspeed tape. It was commanding 210 KTS instead of the required 250 and 280 KT speeds. We as the pilots had to manually select the correct speeds; and also use full speed brakes to meet required altitudes. This required the jet to be hand flown several times on the RNAV STAR just to be at the correct altitude and airspeed at several fixes. THIS IS NOT WORKING!
An A320 First Officer reported specific and generalized problems with respect to conducting RNAV STAR operations into DEN. His summation states: 'THIS IS NOT WORKING!'