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An air carrier B727-200 crew failed to maintain its assigned altitude while slowing on autoplt. Error admitted.
| Attributes | |
| ACN | 339293 |
| Time | |
| Date | 199606 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : scy airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 10700 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other descent : approach |
| 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 : instrument pilot : commercial pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 15000 flight time type : 7000 |
| ASRS Report | 339293 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 150 flight time total : 8000 flight time type : 4300 |
| ASRS Report | 339410 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : became reoriented other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While slowing to 210 KTS at refil on the approach to dfw, our B727-200 pitched over with the autoplt engaged and altitude hold engaged. The first officer took immediate action, but the aircraft lost 300 ft of altitude. ATC noticed on their scope that we had left 11000 ft.
Original NASA ASRS Text
Title: AN ACR B727-200 CREW FAILED TO MAINTAIN ITS ASSIGNED ALT WHILE SLOWING ON AUTOPLT. ERROR ADMITTED.
Narrative: WHILE SLOWING TO 210 KTS AT REFIL ON THE APCH TO DFW, OUR B727-200 PITCHED OVER WITH THE AUTOPLT ENGAGED AND ALT HOLD ENGAGED. THE FO TOOK IMMEDIATE ACTION, BUT THE ACFT LOST 300 FT OF ALT. ATC NOTICED ON THEIR SCOPE THAT WE HAD LEFT 11000 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.