What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY LIGHTING POWER SUPPLY M33409 BATTERY PACK FAILS OPERATIONAL TEST. REPLACED BATTERY PACK AND ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK PER AMM-31-51-06.
- Difficulty date
- January 2, 2024
- Submitted
- January 4, 2024
- Operation
- Air carrier
- Aircraft
- N728AN
- Make and model
- Boeing 777323ER
- Aircraft serial
- 31553
- Aircraft time
- 40,348 hours, 4,677 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- ADD71701100
- Part serial
- 310262
- Condition
- Inoperative
- Location
- Zone 200 - Fuse
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.