Service difficulty report · Battery Pack · Boeing 73776N

Difficulty date
January 19, 2024
Submitted
January 24, 2024
Operation
Air carrier
Aircraft
N7725A
Make and model
Boeing 73776N
Aircraft serial
32671
Aircraft time
56,188 hours, 28,622 cycles
Part
Battery Pack
Part number
UNKNOWN
Condition
Inoperative
Location
Zn 200 Fus Top
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PASSENGER EMERGENCY LIGHTS ASSOCIATED WITH BATTERY PACKS M1668 AND M1669 INOPERATIVE.<[01] REMOVED AND INSTALLED A NEW EMERGENCY BATTERY PACK AT POSITION M1669 AS PER AMM 33-51-06-960-805. REMOVED AND REPLACED EMERGENCY BATTERY PACK AT POSITION M1668 AS PER REF AMM 33-51-06-960-805. PERFORMED THE TEST OF THE NEW BATTERY PACK AND FOUND ALL LIGHTS WORKING OK.;[02] VERIFIED STEP 1.

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