Service difficulty report · Battery · Boeing 7478F

Difficulty date
May 31, 2025
Submitted
June 10, 2025
Operation
Air carrier
Aircraft
N605UP
Make and model
Boeing 7478F
Aircraft serial
64252
Aircraft time
29,032 hours, 4,311 cycles
Part
Battery
Part number
20131A
Part serial
497329
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

**SUPPLEMENTAL SDR** FAULT-FOUND THE L1 DOOR EMERGENCY LIGHT INOP.(REPLACE). I.A.W AMM 33-51-04-900-803 REV.47 REPLACED THE EMERGENCY LIGHT BATTERY (M5170) AND PERFORMED THE L1 DOOR EMERGENCY LIGHT TEST, RESULT WAS SATISFACTORY. REVIEWED TASK PER GMM-MTX 09.05.01.09.

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