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Flight crew of a B727-200 overshot descent assigned altitude due to high rate of descent. The autoplt could not capture the altitude.
| Attributes | |
| ACN | 372560 |
| Time | |
| Date | 199706 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 11700 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | enroute airway : dfw |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 12000 flight time type : 500 |
| ASRS Report | 372560 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter other non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
We had a tailwind and a ground speed of 513 KTS. Considering this, we began our descent too late and had a high sink rate (4000 FPM) for the autoplt to capture our assigned altitude of 12000 ft. I consequently descended to 11700 ft before returning to 12000 ft.
Original NASA ASRS Text
Title: FLC OF A B727-200 OVERSHOT DSCNT ASSIGNED ALT DUE TO HIGH RATE OF DSCNT. THE AUTOPLT COULD NOT CAPTURE THE ALT.
Narrative: WE HAD A TAILWIND AND A GND SPD OF 513 KTS. CONSIDERING THIS, WE BEGAN OUR DSCNT TOO LATE AND HAD A HIGH SINK RATE (4000 FPM) FOR THE AUTOPLT TO CAPTURE OUR ASSIGNED ALT OF 12000 FT. I CONSEQUENTLY DSNDED TO 11700 FT BEFORE RETURNING TO 12000 FT.
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.