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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Captain bumped off standby power switch on overhead panel getting out of seat. Altitude deviation ensued.
| Attributes | |
| ACN | 137867 |
| Time | |
| Date | 199002 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : rno |
| State Reference | NV |
| Altitude | msl bound lower : 29000 msl bound upper : 29400 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 180 flight time total : 4500 flight time type : 1300 |
| ASRS Report | 137867 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : commercial pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude |
| Independent Detector | other flight crewa |
| Resolutory Action | aircraft : equipment problem dissipated |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
While in cruise phase, captain was getting out of seat and turned the standby power switch to off, by inadvertently bumping it with his head. The aircraft rolled to the right and numerous caution lights illuminated. The autoplt disconnected and I noticed the roll and took over manually. At this time the aircraft was climbing and turning. The aircraft climbed 400' above assigned altitude. The captain put the standby switch back to normal, and all systems returned to normal. ATC made no comment. The standby power switch should be guarded like the battery switch, or have a 'pull and twist' mechanism.
Original NASA ASRS Text
Title: CAPT BUMPED OFF STANDBY POWER SWITCH ON OVERHEAD PANEL GETTING OUT OF SEAT. ALT DEVIATION ENSUED.
Narrative: WHILE IN CRUISE PHASE, CAPT WAS GETTING OUT OF SEAT AND TURNED THE STANDBY POWER SWITCH TO OFF, BY INADVERTENTLY BUMPING IT WITH HIS HEAD. THE ACFT ROLLED TO THE RIGHT AND NUMEROUS CAUTION LIGHTS ILLUMINATED. THE AUTOPLT DISCONNECTED AND I NOTICED THE ROLL AND TOOK OVER MANUALLY. AT THIS TIME THE ACFT WAS CLIMBING AND TURNING. THE ACFT CLIMBED 400' ABOVE ASSIGNED ALT. THE CAPT PUT THE STANDBY SWITCH BACK TO NORMAL, AND ALL SYSTEMS RETURNED TO NORMAL. ATC MADE NO COMMENT. THE STANDBY POWER SWITCH SHOULD BE GUARDED LIKE THE BATTERY SWITCH, OR HAVE A 'PULL AND TWIST' MECHANISM.
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.