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Air carrier first officer allowed aircraft to deviate from clearance altitude while captain was absent from the cockpit.
| Attributes | |
| ACN | 306200 |
| Time | |
| Date | 199505 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zzz |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 306200 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance non adherence other other anomaly other |
| 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:
I was in the lavatory. When I got in the cockpit first officer informed me the aircraft deviated 500 ft from assigned altitude due to unknown autoplt disconnect. He had returned aircraft to proper altitude. Rest of flight was uneventful.
Original NASA ASRS Text
Title: ACR FO ALLOWED ACFT TO DEVIATE FROM CLRNC ALT WHILE CAPT WAS ABSENT FROM THE COCKPIT.
Narrative: I WAS IN THE LAVATORY. WHEN I GOT IN THE COCKPIT FO INFORMED ME THE ACFT DEVIATED 500 FT FROM ASSIGNED ALT DUE TO UNKNOWN AUTOPLT DISCONNECT. HE HAD RETURNED ACFT TO PROPER ALT. REST OF FLT WAS UNEVENTFUL.
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.