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Altitude deviation altitude overshot in climb. First officer, PF, forgot to set altitude to qnh from QFE.
| Attributes | |
| ACN | 202679 |
| Time | |
| Date | 199202 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 10000 msl bound upper : 10250 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 190 flight time total : 16000 flight time type : 1000 |
| ASRS Report | 202679 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : published procedure 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:
Cleared to climb and maintain 10000 ft. The first officer was flying the aircraft. I made a call leaving 9000 for 10000 ft. At 9800 ft I realized first officer was not attempting to level the aircraft. (He was hand flying the aircraft). I grabbed the wheel and pushed aircraft over and we climbed to 10250 ft before returning to assigned altitude. Company has an altimeter policy of setting QFE for all departures and lndgs and first officer did not reset qnh during climb out and consequently thought he was below assigned altitude. First officer was also new in aircraft which I feel contributed to problem. When the first officer is flying, as well as the captain, and the altimeters are set for QFE the stand by altimeter is the primary source of altitude and it is outside your normal scan which causes many problems during low altitude level offs. The checklist doesn't call for qnh to be reset until 10000 ft so if you get busy and forget, you resort to your normal scan, which is your main altimeter, and you can have problems. Another factor is this aircraft gives no aural warning when you are approaching your assigned altitude. This would help eliminate this type of problem, both climbing and descending, when the workload is the highest.
Original NASA ASRS Text
Title: ALTDEV ALT OVERSHOT IN CLB. FO, PF, FORGOT TO SET ALT TO QNH FROM QFE.
Narrative: CLRED TO CLB AND MAINTAIN 10000 FT. THE FO WAS FLYING THE ACFT. I MADE A CALL LEAVING 9000 FOR 10000 FT. AT 9800 FT I REALIZED FO WAS NOT ATTEMPTING TO LEVEL THE ACFT. (HE WAS HAND FLYING THE ACFT). I GRABBED THE WHEEL AND PUSHED ACFT OVER AND WE CLBED TO 10250 FT BEFORE RETURNING TO ASSIGNED ALT. COMPANY HAS AN ALTIMETER POLICY OF SETTING QFE FOR ALL DEPS AND LNDGS AND FO DID NOT RESET QNH DURING CLBOUT AND CONSEQUENTLY THOUGHT HE WAS BELOW ASSIGNED ALT. FO WAS ALSO NEW IN ACFT WHICH I FEEL CONTRIBUTED TO PROBLEM. WHEN THE FO IS FLYING, AS WELL AS THE CAPT, AND THE ALTIMETERS ARE SET FOR QFE THE STAND BY ALTIMETER IS THE PRIMARY SOURCE OF ALT AND IT IS OUTSIDE YOUR NORMAL SCAN WHICH CAUSES MANY PROBLEMS DURING LOW ALT LEVEL OFFS. THE CHKLIST DOESN'T CALL FOR QNH TO BE RESET UNTIL 10000 FT SO IF YOU GET BUSY AND FORGET, YOU RESORT TO YOUR NORMAL SCAN, WHICH IS YOUR MAIN ALTIMETER, AND YOU CAN HAVE PROBLEMS. ANOTHER FACTOR IS THIS ACFT GIVES NO AURAL WARNING WHEN YOU ARE APCHING YOUR ASSIGNED ALT. THIS WOULD HELP ELIMINATE THIS TYPE OF PROBLEM, BOTH CLBING AND DSNDING, WHEN THE WORKLOAD IS THE HIGHEST.
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.