What was found
ZONE C, EMERGENCY EXIT LIGHTS CAME ON IN FLIGHT. CYCLED SWITCH IN COCKPIT, DID NOT HELP. EVENTUALLY WENT OUT, STAYED OUT FOR 5 HOURS. CAME BACK ON 7 HOURS INTO FLIGHT. REPLACED POWER SUPPLY & BATTERY IAW AMM 33-51. OP TESTED & OK.
- Difficulty date
- December 5, 2012
- Submitted
- December 6, 2012
- Operation
- Air carrier
- Aircraft
- N861DA
- Make and model
- Boeing 777232
- Aircraft serial
- 29952
- Aircraft time
- 59,074 hours, 7,781 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Condition
- Inoperative
- Location
- Emergency Lights
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.