What was found
DURING PS-1 CHECK FOUND SEVERAL EMERGENCY LIGHTS WITHOUT FUNCTION FOUND ALL FAULTY LIGHTS CONNECTED TO BATTERY PACK M5168. REPLACED AND TESTED BATTERY PACK IAW AMM 33-51-04-902-001-001 REV.109. FOUND SATIS.
- Difficulty date
- November 18, 2023
- Submitted
- November 20, 2023
- Operation
- Air carrier
- Aircraft
- N573UP
- Make and model
- Boeing 74744AF
- Aircraft serial
- 35662
- Aircraft time
- 55,736 hours, 8,772 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 20131A
- Part serial
- 45438
- Condition
- Inoperative
- Location
- Unknown
- Stage of operation
- IN
- 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.