Service difficulty report · Battery Pack · Boeing 757204

Difficulty date
September 4, 2024
Submitted
September 4, 2024
Operation
Air carrier
Aircraft
N925FD
Make and model
Boeing 757204
Aircraft serial
27238
Aircraft time
65,399 hours, 27,723 cycles
Part
Battery Pack
Part number
20131A
Part serial
72679
Condition
Inoperative
Location
Zone 200
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.

What was found

DURING MX PRE-FLIGHT CHECK, FOUND L1 DOOR OVERHEAD EMERGENCY EXIT SIGN (L31), AND L1 SLIDE LIGHT (L25)WILL ONLY STAY ILLUMINATED FOR APPROX 2 SECONDS. FACT 03SEP24 22:20 SWF AMM: 33-51-07-2 KEPT A/C POWERED UP FOR 3 HOURS AND ATTEMPTED EMERGENCY EXIT SIGN TEST AGAIN. WILL ONLY STAY LIT FOR APPOX 5 SECONDS NOW. REMOVED AND REPLACED BATTERY PACK FOR M731 POWER SUPPLY. OPS CHECK NOW GOOD. WORK PERFORMED AS PER ABOVE REF. A/C OK FOR SERVICE.