What was found
UPPER DECK EMERGENCY LIGHT POWER SUPPLY M5056 BATTERY READS LOW VOLTAGE. REMOVED AND REPLACED M5056 / BATTERY PER B747 AMM 33-51-04-902-001-001. OPS CHECKED GOOD PER B747 AMM / 33-51-04-712-006-001.
- Difficulty date
- August 13, 2020
- Submitted
- August 13, 2020
- Operation
- Air carrier
- Aircraft
- N322SG
- Make and model
- Boeing 747481
- Aircraft serial
- 30322
- Aircraft time
- 46,171 hours, 6,116 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 20131A
- Part serial
- 60945
- Condition
- Discharged
- 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.