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A G2 flight crew in cruise overwater inadvertently killed electric power to the ship; causing a depressurization. After descending; they restored power and continued.
| Attributes | |
| ACN | 715309 |
| Time | |
| Date | 200610 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zoa.artcc |
| State Reference | CA |
| Altitude | msl single value : 41000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa.artcc tower : zzz.tower |
| Operator | common carrier : charter |
| Make Model Name | Gulfstream II |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Route In Use | enroute : pacific |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : charter |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 2800 flight time type : 250 |
| ASRS Report | 715309 |
| Person 2 | |
| Affiliation | company : charter |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : excursion from assigned altitude other spatial deviation |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem flight crew : returned to original clearance flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
While in cruise at FL410 the captain had gone back to the main cabin to use the restroom. When he returned he was getting into his seat and we lost all power and began to lose cabin pressure. We were unaware of what the problem was at this time. We began an emergency descent 90 degrees off the track to the northwest. Once we were down at a safe altitude (15000 ft) we began to troubleshoot the problem. The captain discovered he had hit the gang-bar (shutting off all power to the aircraft) with his head while getting back in his seat. When he began to power up the aircraft we called san francisco and advised them of the situation. We began a climb off the track up to our original at FL410. Once we were at FL410 we advised them of our position and reestablished ourselves back on track. At this time we continued on to our original destination without further incident.
Original NASA ASRS Text
Title: A G2 FLT CREW IN CRUISE OVERWATER INADVERTENTLY KILLED ELECTRIC PWR TO THE SHIP; CAUSING A DEPRESSURIZATION. AFTER DSNDING; THEY RESTORED PWR AND CONTINUED.
Narrative: WHILE IN CRUISE AT FL410 THE CAPT HAD GONE BACK TO THE MAIN CABIN TO USE THE RESTROOM. WHEN HE RETURNED HE WAS GETTING INTO HIS SEAT AND WE LOST ALL PWR AND BEGAN TO LOSE CABIN PRESSURE. WE WERE UNAWARE OF WHAT THE PROB WAS AT THIS TIME. WE BEGAN AN EMER DSCNT 90 DEGS OFF THE TRACK TO THE NW. ONCE WE WERE DOWN AT A SAFE ALT (15000 FT) WE BEGAN TO TROUBLESHOOT THE PROB. THE CAPT DISCOVERED HE HAD HIT THE GANG-BAR (SHUTTING OFF ALL PWR TO THE ACFT) WITH HIS HEAD WHILE GETTING BACK IN HIS SEAT. WHEN HE BEGAN TO PWR UP THE ACFT WE CALLED SAN FRANCISCO AND ADVISED THEM OF THE SITUATION. WE BEGAN A CLB OFF THE TRACK UP TO OUR ORIGINAL AT FL410. ONCE WE WERE AT FL410 WE ADVISED THEM OF OUR POS AND REESTABLISHED OURSELVES BACK ON TRACK. AT THIS TIME WE CONTINUED ON TO OUR ORIGINAL DEST WITHOUT FURTHER INCIDENT.
Data retrieved from NASA's ASRS site as of January 2009 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.