Service difficulty report · Battery Pack · Boeing 76734AF

Difficulty date
October 10, 2025
Submitted
October 30, 2025
Operation
Air carrier
Aircraft
N338UP
Make and model
Boeing 76734AF
Aircraft serial
37944
Aircraft time
37,428 hours, 13,635 cycles
Part
Battery Pack
Part number
20131A
Part serial
44854
Condition
No Test
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

FOUND EMERGENCY BATTERY PACK CAPACITY TEST FAILED. IAW AMM 33-51-07-022-001, 33-51-07-422-012, REV.146 REPLACED BATTERY PACK.

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