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An MD80 flight crew overshoots its assigned altitude when the altitude alerter has been moved from a preset altitude during climb out from msy, la.
| Attributes | |
| ACN | 537573 |
| Time | |
| Date | 200202 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : msy.airport |
| State Reference | LA |
| Altitude | msl bound lower : 31000 msl bound upper : 32000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 120 flight time total : 7500 flight time type : 1500 |
| ASRS Report | 537573 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 17000 flight time type : 1000 |
| ASRS Report | 537562 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude altitude deviation : overshoot non adherence : clearance non adherence : company policies other anomaly other |
| Independent Detector | atc equipment other atc equipment : radar other controllera |
| Resolutory Action | controller : issued advisory flight crew : became reoriented flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While operating flight from msy, I was serving as first officer. ATC cleared our flight to climb to FL310. The correct altitude was set in and verified by the captain who was the PIC and also the PF. I was not flying and was off the ATC radio speaking to company and obtaining ATIS. Due to distraction, the captain overshot the assigned altitude of FL310 and leveled off at FL320, after being called by center. The captain then descended back to FL310. ATC advised that the overshoot did not cause any problems nor did it affect any other aircraft. I believe the problem was caused by a malfunction in the altitude alert window or button, or was accidentally bumped off by 1000 ft. Supplemental information from acn 537562: overshoot of assigned FL310 due to misset altitude reminder window and subsequent loss of altitude 'arm' and FL310 warning chimes. PF was distraction. Reason for FL310 disarm not fully recallable. Flight duration was a short +52 mins.
Original NASA ASRS Text
Title: AN MD80 FLC OVERSHOOTS ITS ASSIGNED ALT WHEN THE ALT ALERTER HAS BEEN MOVED FROM A PRESET ALT DURING CLBOUT FROM MSY, LA.
Narrative: WHILE OPERATING FLT FROM MSY, I WAS SERVING AS FO. ATC CLRED OUR FLT TO CLB TO FL310. THE CORRECT ALT WAS SET IN AND VERIFIED BY THE CAPT WHO WAS THE PIC AND ALSO THE PF. I WAS NOT FLYING AND WAS OFF THE ATC RADIO SPEAKING TO COMPANY AND OBTAINING ATIS. DUE TO DISTR, THE CAPT OVERSHOT THE ASSIGNED ALT OF FL310 AND LEVELED OFF AT FL320, AFTER BEING CALLED BY CTR. THE CAPT THEN DSNDED BACK TO FL310. ATC ADVISED THAT THE OVERSHOOT DID NOT CAUSE ANY PROBS NOR DID IT AFFECT ANY OTHER ACFT. I BELIEVE THE PROB WAS CAUSED BY A MALFUNCTION IN THE ALT ALERT WINDOW OR BUTTON, OR WAS ACCIDENTALLY BUMPED OFF BY 1000 FT. SUPPLEMENTAL INFO FROM ACN 537562: OVERSHOOT OF ASSIGNED FL310 DUE TO MISSET ALT REMINDER WINDOW AND SUBSEQUENT LOSS OF ALT 'ARM' AND FL310 WARNING CHIMES. PF WAS DISTR. REASON FOR FL310 DISARM NOT FULLY RECALLABLE. FLT DURATION WAS A SHORT +52 MINS.
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.