Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
September 11, 2026
Submitted
September 19, 2026
Operation
Air carrier
Aircraft
N8552Z
Make and model
Boeing 7378H4
Aircraft serial
63580
Aircraft time
29,305 hours, 14,971 cycles
Part
Battery Pack
Condition
Discharged
Location
Zone 200
Stage of operation
IN
How discovered
V
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

EMERGENCY BATTERY M01694 DISCHARGES IN TWO MINUTES. REMOVED AND REPLACED SERVICEABLE BATTERY PACK POWER SUPPLY AT M1694 AND PERFORMED GOOD TEST IAW AMM TASK 33-51-06-960-805.

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