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An air carrier flight crew in an mdt climbed above their assigned altitude when they became distraction by other tasks and failed to note that the altitude select mode was not engaged.
| Attributes | |
| ACN | 363811 |
| Time | |
| Date | 199703 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ptw |
| State Reference | PA |
| Altitude | msl bound lower : 12000 msl bound upper : 12350 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny tracon : flo |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 flight time total : 7290 flight time type : 2700 |
| ASRS Report | 363811 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 250 flight time total : 11500 flight time type : 5000 |
| ASRS Report | 363810 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far 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 |
Narrative:
We were climbing to our assigned altitude of 12000 ft. The autoplt was on and altitude select was selected, but it did not register. Both pilots failed to notice that altitude select did not register. Just before reaching 12000 ft the captain (PF) began looking at the cruise power setting chart. I (the first officer) was looking at a low altitude en route chart to determine the outbound course from the ptw VOR. The aircraft continued to climb to about 12350 ft. Both pilots noticed what had happened. The captain turned the autoplt off and descended to 12000 ft. Both pilots should have monitored the aircraft altitude before beginning other tasks. Also, both pilots should have noticed and confirmed that altitude select did not register on the autoplt.
Original NASA ASRS Text
Title: AN ACR FLC IN AN MDT CLBED ABOVE THEIR ASSIGNED ALT WHEN THEY BECAME DISTR BY OTHER TASKS AND FAILED TO NOTE THAT THE ALT SELECT MODE WAS NOT ENGAGED.
Narrative: WE WERE CLBING TO OUR ASSIGNED ALT OF 12000 FT. THE AUTOPLT WAS ON AND ALT SELECT WAS SELECTED, BUT IT DID NOT REGISTER. BOTH PLTS FAILED TO NOTICE THAT ALT SELECT DID NOT REGISTER. JUST BEFORE REACHING 12000 FT THE CAPT (PF) BEGAN LOOKING AT THE CRUISE PWR SETTING CHART. I (THE FO) WAS LOOKING AT A LOW ALT ENRTE CHART TO DETERMINE THE OUTBOUND COURSE FROM THE PTW VOR. THE ACFT CONTINUED TO CLB TO ABOUT 12350 FT. BOTH PLTS NOTICED WHAT HAD HAPPENED. THE CAPT TURNED THE AUTOPLT OFF AND DSNDED TO 12000 FT. BOTH PLTS SHOULD HAVE MONITORED THE ACFT ALT BEFORE BEGINNING OTHER TASKS. ALSO, BOTH PLTS SHOULD HAVE NOTICED AND CONFIRMED THAT ALT SELECT DID NOT REGISTER ON THE AUTOPLT.
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.