What was found
LIGHT BATTERY PACKS FAIL CAPACITY TEST. REMOVED EMERGENCY LIGHT BATTERY PACKS (4EA) IN UPPER DECK AS PER AMM 33-51-04. INSTALLED NEW EMERGENCY LIGHT BATTERY PACKS (2EA) IN UPPER DECK AS PER AMM 33-51-04. OP CK GOOD PER AMM 33-51-04.
- Difficulty date
- August 19, 2017
- Submitted
- September 12, 2017
- Operation
- Air carrier
- Aircraft
- N473MC
- Make and model
- Boeing 74745E
- Aircraft serial
- 27174
- Aircraft time
- 97,847 hours, 17,365 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- BPS73
- Part serial
- 35065
- Condition
- Discharged
- Location
- Cabin
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.