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Flight crew inadvertently overshot descent altitude due to the distraction of looking for TCASII reported traffic.
| Attributes | |
| ACN | 247076 |
| Time | |
| Date | 199307 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : msp |
| State Reference | MN |
| Altitude | msl bound lower : 5500 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : msp tower : den |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 100 flight time total : 5000 flight time type : 100 |
| ASRS Report | 247076 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Upon arrival into msp the approach controller issued numerous airspeed and altitude changes. Upon a slow descent to 6000 ft, approaching 6100 ft, the TCASII displayed 2 targets -- one target at 12-1 O'clock (plus 02) 200 ft above, and another target closing from behind. The captain was flying at the time (hand flying). We were both distracted by the TCASII targets (our eyes were outside the aircraft) and as a result, we missed the 6000 ft altitude by 300-500 ft. The correction was started before controller intervention. The controller issued a turn to avoid traffic (the traffic was in visual contact) and the TCASII issued a climb RA.
Original NASA ASRS Text
Title: FLC INADVERTENTLY OVERSHOT DSCNT ALT DUE TO THE DISTR OF LOOKING FOR TCASII RPTED TFC.
Narrative: UPON ARR INTO MSP THE APCH CTLR ISSUED NUMEROUS AIRSPD AND ALT CHANGES. UPON A SLOW DSCNT TO 6000 FT, APCHING 6100 FT, THE TCASII DISPLAYED 2 TARGETS -- ONE TARGET AT 12-1 O'CLOCK (PLUS 02) 200 FT ABOVE, AND ANOTHER TARGET CLOSING FROM BEHIND. THE CAPT WAS FLYING AT THE TIME (HAND FLYING). WE WERE BOTH DISTRACTED BY THE TCASII TARGETS (OUR EYES WERE OUTSIDE THE ACFT) AND AS A RESULT, WE MISSED THE 6000 FT ALT BY 300-500 FT. THE CORRECTION WAS STARTED BEFORE CTLR INTERVENTION. THE CTLR ISSUED A TURN TO AVOID TFC (THE TFC WAS IN VISUAL CONTACT) AND THE TCASII ISSUED A CLB RA.
Data retrieved from NASA's ASRS site as of July 2007 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.