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Flight crew of large transport on descent at high rate overshoots assigned altitude. They immediately return to assigned altitude while notifying ATC.
| Attributes | |
| ACN | 373830 |
| Time | |
| Date | 199707 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : fak |
| State Reference | VA |
| Altitude | msl bound lower : 20500 msl bound upper : 21000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : instrument pilot : flight engineer |
| Experience | flight time last 90 days : 225 flight time total : 8000 flight time type : 700 |
| ASRS Report | 373830 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 600 |
| ASRS Report | 373454 |
| Events | |
| Anomaly | altitude deviation : overshoot 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 | other |
Narrative:
Descending on the terks 2 arrival into norfolk, we were given instructions to cross 20 DME west of flat rock at FL210. To make the restr we had a high rate of descent and the PF had in his mind that we were descending to FL200. At FL220 the PF realized that the clearance was to FL210 not FL200. The rate of descent was too high to stop at FL210 and the aircraft bottomed out at FL205 and then climbed back to FL210. ATC was notified that we were going below FL210 and that we were initiating a climb back to FL210. The PNF could have realized that the high rate of descent would not allow for a normal leveloff at FL210 and that the normal 1000 ft prior 'callout' would not be enough warning. Adhering to normal callouts is very important but sometimes sits dictate that we alter what is required.
Original NASA ASRS Text
Title: FLC OF LGT ON DSCNT AT HIGH RATE OVERSHOOTS ASSIGNED ALT. THEY IMMEDIATELY RETURN TO ASSIGNED ALT WHILE NOTIFYING ATC.
Narrative: DSNDING ON THE TERKS 2 ARR INTO NORFOLK, WE WERE GIVEN INSTRUCTIONS TO CROSS 20 DME W OF FLAT ROCK AT FL210. TO MAKE THE RESTR WE HAD A HIGH RATE OF DSCNT AND THE PF HAD IN HIS MIND THAT WE WERE DSNDING TO FL200. AT FL220 THE PF REALIZED THAT THE CLRNC WAS TO FL210 NOT FL200. THE RATE OF DSCNT WAS TOO HIGH TO STOP AT FL210 AND THE ACFT BOTTOMED OUT AT FL205 AND THEN CLBED BACK TO FL210. ATC WAS NOTIFIED THAT WE WERE GOING BELOW FL210 AND THAT WE WERE INITIATING A CLB BACK TO FL210. THE PNF COULD HAVE REALIZED THAT THE HIGH RATE OF DSCNT WOULD NOT ALLOW FOR A NORMAL LEVELOFF AT FL210 AND THAT THE NORMAL 1000 FT PRIOR 'CALLOUT' WOULD NOT BE ENOUGH WARNING. ADHERING TO NORMAL CALLOUTS IS VERY IMPORTANT BUT SOMETIMES SITS DICTATE THAT WE ALTER WHAT IS REQUIRED.
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.