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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier mdt flight crew descended below their assigned altitude. An alert controller warned them of their overshot altitude and they returned to the proper altitude.
| Attributes | |
| ACN | 373969 |
| Time | |
| Date | 199707 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lhy |
| State Reference | PA |
| Altitude | msl bound lower : 12500 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 24000 flight time type : 2500 |
| ASRS Report | 373969 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : far |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were operating an air carrier flight from bos to abe at 14000 ft when ZNY gave us a descent to 13000 ft. I thought he gave us 12000 ft and set 12000 ft in the altitude selector. The first officer answered him correctly, but I think he was getting allentown approach plates out and missed checking my altitude. At 12500 ft center said we should be at 13000 ft, so we climbed back up to 13000 ft. I think part of the problem was center's radio, which was scratchy and he was also busy, which could have contributed to my misunderstanding the altitude.
Original NASA ASRS Text
Title: AN ACR MDT FLC DSNDED BELOW THEIR ASSIGNED ALT. AN ALERT CTLR WARNED THEM OF THEIR OVERSHOT ALT AND THEY RETURNED TO THE PROPER ALT.
Narrative: WE WERE OPERATING AN ACR FLT FROM BOS TO ABE AT 14000 FT WHEN ZNY GAVE US A DSCNT TO 13000 FT. I THOUGHT HE GAVE US 12000 FT AND SET 12000 FT IN THE ALT SELECTOR. THE FO ANSWERED HIM CORRECTLY, BUT I THINK HE WAS GETTING ALLENTOWN APCH PLATES OUT AND MISSED CHKING MY ALT. AT 12500 FT CTR SAID WE SHOULD BE AT 13000 FT, SO WE CLBED BACK UP TO 13000 FT. I THINK PART OF THE PROB WAS CTR'S RADIO, WHICH WAS SCRATCHY AND HE WAS ALSO BUSY, WHICH COULD HAVE CONTRIBUTED TO MY MISUNDERSTANDING THE ALT.
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.