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A B757 flight crew was 1200 ft high on an altitude crossing restr. The captain (PF) had been interrupted while using vertical speed mode and failed to monitor the descent.
| Attributes | |
| ACN | 324640 |
| Time | |
| Date | 199601 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : stw |
| State Reference | NJ |
| Altitude | msl bound lower : 23000 msl bound upper : 24200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 110 flight time total : 16520 flight time type : 1200 |
| ASRS Report | 324640 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Approaching wilkes-barre (lvz) cleared on the lendy 4 arrival and to cross harty at FL230. Center started us down early and put us low on our profile descent. I was using vertical speed on the MCP at 1000 FPM. I was watching the closure of our descent to the projected profile descent. I was approximately 3800 ft below the projected descent and planned to use vertical navigation (VNAV) on the MCP to cross harty at FL230. I was interrupted by a crew member entering the cockpit. After some conversation I looked back at my descent and I was 1400 ft high on my projected descent. I applied speed brakes and increased speed. I crossed harty at 24200 ft, at 3000 FPM descent. I leveled the aircraft approximately 1.2 mi past harty at 23000 ft. Nothing was said by the center and no evasive action was taken. The next time this situation arises, I will keep my head in the instruments. I will also arm the VNAV function without the vertical speed use.
Original NASA ASRS Text
Title: A B757 FLC WAS 1200 FT HIGH ON AN ALT XING RESTR. THE CAPT (PF) HAD BEEN INTERRUPTED WHILE USING VERT SPD MODE AND FAILED TO MONITOR THE DSCNT.
Narrative: APCHING WILKES-BARRE (LVZ) CLRED ON THE LENDY 4 ARR AND TO CROSS HARTY AT FL230. CTR STARTED US DOWN EARLY AND PUT US LOW ON OUR PROFILE DSCNT. I WAS USING VERT SPD ON THE MCP AT 1000 FPM. I WAS WATCHING THE CLOSURE OF OUR DSCNT TO THE PROJECTED PROFILE DSCNT. I WAS APPROX 3800 FT BELOW THE PROJECTED DSCNT AND PLANNED TO USE VERT NAV (VNAV) ON THE MCP TO CROSS HARTY AT FL230. I WAS INTERRUPTED BY A CREW MEMBER ENTERING THE COCKPIT. AFTER SOME CONVERSATION I LOOKED BACK AT MY DSCNT AND I WAS 1400 FT HIGH ON MY PROJECTED DSCNT. I APPLIED SPD BRAKES AND INCREASED SPD. I CROSSED HARTY AT 24200 FT, AT 3000 FPM DSCNT. I LEVELED THE ACFT APPROX 1.2 MI PAST HARTY AT 23000 FT. NOTHING WAS SAID BY THE CTR AND NO EVASIVE ACTION WAS TAKEN. THE NEXT TIME THIS SIT ARISES, I WILL KEEP MY HEAD IN THE INSTS. I WILL ALSO ARM THE VNAV FUNCTION WITHOUT THE VERT SPD USE.
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.