Service difficulty report · Battery · Boeing 7378H4

Difficulty date
June 6, 2025
Submitted
June 9, 2025
Operation
Air carrier
Aircraft
N8571Z
Make and model
Boeing 7378H4
Aircraft serial
36957
Aircraft time
23,082 hours, 11,899 cycles
Part
Battery
Condition
Failed
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

L-1 AND R-1 DOOR EMERGENCY LIGHTS FAIL TO ILLUMINATE<[01] 01 - REMOVED AND REPLACED EMX BATTERY AND POWER SUPPLY FOR POSITION M01675; AND REMOVED AND REPLACED EMX BATTERY PACK AND POWER SUPPLY FOR POSITION M02816 PER [AMM 33-51-06-960-805-NG (POWER SUPPLY - BATTERY PACK REPLACEMENT - PERMANENT)]

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