What was found
DURING SERVICE CHECK, FOUND UPPER DECK EXIT SIGN INOPERATIVE. FOUND BATTERY WEAK AT POWER SUPPLY M7050. REMOVED AND INSTALLED A NEW BATTERY IAW AMM 33-51.
- Difficulty date
- December 29, 2016
- Submitted
- December 30, 2016
- Operation
- Air carrier
- Aircraft
- N670US
- Make and model
- Boeing 747451
- Aircraft serial
- 24225
- Aircraft time
- 110,985 hours, 13,525 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Condition
- Inoperative
- Location
- Emergency Lights
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.