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Flight crew of a super MD80 overshot descent altitude due to the autoflt altitude selector going off setting. ARTCC radar controller intervened to inquire about their altitude after the assigned had been passed, and then cleared them down to a lower altitude. There was no known traffic conflict as a result of this flight crew error.
| Attributes | |
| ACN | 401759 |
| Time | |
| Date | 199805 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mkc |
| State Reference | MO |
| Altitude | msl bound lower : 27500 msl bound upper : 29000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | enroute airway : zkc |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 401759 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 401760 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Location, 120 mi east of mkc VOR. Cruising at FL330 ZKC gave descent clearance to FL290. Set FL290 in altitude window and first officer started descent. During descent altitude select knob must have gotten bumped and FL270 got set in window. At about FL275 center asked what altitude we were going to and we replied FL270. Center said we were only cleared to FL290 and to continue descent to FL270. We were told there were no traffic conflicts or other aircraft in our area. I, the captain was busy with non flying duties and looking back I should have been monitoring descent more closely.
Original NASA ASRS Text
Title: FLC OF A SUPER MD80 OVERSHOT DSCNT ALT DUE TO THE AUTOFLT ALT SELECTOR GOING OFF SETTING. ARTCC RADAR CTLR INTERVENED TO INQUIRE ABOUT THEIR ALT AFTER THE ASSIGNED HAD BEEN PASSED, AND THEN CLRED THEM DOWN TO A LOWER ALT. THERE WAS NO KNOWN TFC CONFLICT AS A RESULT OF THIS FLC ERROR.
Narrative: LOCATION, 120 MI E OF MKC VOR. CRUISING AT FL330 ZKC GAVE DSCNT CLRNC TO FL290. SET FL290 IN ALT WINDOW AND FO STARTED DSCNT. DURING DSCNT ALT SELECT KNOB MUST HAVE GOTTEN BUMPED AND FL270 GOT SET IN WINDOW. AT ABOUT FL275 CTR ASKED WHAT ALT WE WERE GOING TO AND WE REPLIED FL270. CTR SAID WE WERE ONLY CLRED TO FL290 AND TO CONTINUE DSCNT TO FL270. WE WERE TOLD THERE WERE NO TFC CONFLICTS OR OTHER ACFT IN OUR AREA. I, THE CAPT WAS BUSY WITH NON FLYING DUTIES AND LOOKING BACK I SHOULD HAVE BEEN MONITORING DSCNT MORE CLOSELY.
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.