 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B777 flight crew reports a main battery overheat and discharge causing multiple system failures and fumes in the cabin and flight deck. Flight diverts to a suitable alternate.
| Attributes | |
| ACN | 1112353 |
| Time | |
| Date | 201308 |
| Place | |
| Locale Reference | ZZZZ.ARTCC |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B777 Undifferentiated or Other Model |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | DC Battery |
| Person 1 | |
| Function | First Officer Pilot Not Flying Relief Pilot |
| Person 2 | |
| Function | First Officer |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
I was awakened from the bunk approximately 3 hours into my rest and called to the flight deck by the captain. Once we opened the bunk door there was a strong acrid metallic smell in the cabin. Most likely potassium hydroxide (toxic) fumes from the main battery. Once on the flight deck I and the other international relief officer were apprised of the situation. Fumes and the main battery discharging with a list of associated system failures. The two international relief officer's started looking for alternate airports. There were not a lot of options. The closest was not a good option; but with dispatch and maintenance concurrence we agreed on ZZZZ airport with another airport as a backup in case the weather went south. At this point we told ATC that we were changing our destination to ZZZZ. Landed overweight smoothly. APU would not start. No nose wheel steering. Towed to hard stand. Passenger got off. Crew and fam's spent 8 hours waiting to deplane. Fams required [staying] on AC until next day.
Original NASA ASRS Text
Title: B777 flight crew reports a main battery overheat and discharge causing multiple system failures and fumes in the cabin and flight deck. Flight diverts to a suitable alternate.
Narrative: I was awakened from the bunk approximately 3 hours into my rest and called to the flight deck by the Captain. Once we opened the bunk door there was a strong acrid metallic smell in the cabin. Most likely Potassium Hydroxide (Toxic) fumes from the main battery. Once on the flight deck I and the other IRO were apprised of the situation. Fumes and the main battery discharging with a list of associated system failures. The two IRO's started looking for alternate airports. There were not a lot of options. The closest was not a good option; but with Dispatch and Maintenance concurrence we agreed on ZZZZ airport with another airport as a backup in case the weather went south. At this point we told ATC that we were changing our destination to ZZZZ. Landed overweight smoothly. APU would not start. No nose wheel steering. Towed to hard stand. Passenger got off. Crew and FAM's spent 8 hours waiting to deplane. FAMs required [staying] on AC until next day.
Data retrieved from NASA's ASRS site as of July 2013 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.