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As the captain's attention is diverted, the first officer inadvertently climbs the aircraft during an approach when they were supposed to be level until intercepting the GS.
| Attributes | |
| ACN | 521240 |
| Time | |
| Date | 200108 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : cyvr.airport |
| State Reference | BC |
| Altitude | msl bound lower : 3000 msl bound upper : 3300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 230 flight time total : 10155 flight time type : 230 |
| ASRS Report | 521240 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude altitude deviation : undershoot non adherence : clearance |
| Resolutory Action | controller : issued advisory flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared to descend to 3000 ft while on vectors to intercept and cleared the ILS runway 26R approach in cyur. On the descent the first officer was hand-flying (no autoplt) and 3000 ft was set into the altitude alert, also approach mode selected on the FCU. In the descent the first officer shallowed his descent as the GS came off the peg. Approaching assigned altitude I diverted my attention to the mcdu to clean-up the approach. During this time the first officer apparently porpoised while trying to capture altitude/GS because ATC then inquired if we were climbing, as I told ATC we were descending to 3000 ft as assigned. There were no TA/RA or any traffic on my TCASII that showed conflict.
Original NASA ASRS Text
Title: AS THE CAPT'S ATTN IS DIVERTED, THE FO INADVERTENTLY CLBS THE ACFT DURING AN APCH WHEN THEY WERE SUPPOSED TO BE LEVEL UNTIL INTERCEPTING THE GS.
Narrative: WE WERE CLRED TO DSND TO 3000 FT WHILE ON VECTORS TO INTERCEPT AND CLRED THE ILS RWY 26R APCH IN CYUR. ON THE DSCNT THE FO WAS HAND-FLYING (NO AUTOPLT) AND 3000 FT WAS SET INTO THE ALT ALERT, ALSO APCH MODE SELECTED ON THE FCU. IN THE DSCNT THE FO SHALLOWED HIS DSCNT AS THE GS CAME OFF THE PEG. APCHING ASSIGNED ALT I DIVERTED MY ATTN TO THE MCDU TO CLEAN-UP THE APCH. DURING THIS TIME THE FO APPARENTLY PORPOISED WHILE TRYING TO CAPTURE ALT/GS BECAUSE ATC THEN INQUIRED IF WE WERE CLBING, AS I TOLD ATC WE WERE DSNDING TO 3000 FT AS ASSIGNED. THERE WERE NO TA/RA OR ANY TFC ON MY TCASII THAT SHOWED CONFLICT.
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.