Service difficulty report · Battery Pack · Boeing 7378H4

Difficulty date
September 20, 2026
Submitted
September 29, 2026
Operation
Air carrier
Aircraft
N8563Z
Make and model
Boeing 7378H4
Aircraft serial
64172
Aircraft time
28,656 hours, 14,673 cycles
Part
Battery Pack
Part number
D7170100
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

FOUND MULTIPLE EMERGENCY LIGHTS INOPERATIVE AT MID CABIN. PERFORMED TROUBLSHOOTING, FOUND BATTERY PACKS M1694, M1695, & M1671 INOPERATIVE IAW AMM 33-51-00, & WDM 33-51-13. REMOVED DADO PANELS IAW AMM 33-51-06. REMOVED BATTERY PACKS M1695 AND M1694 IAW AMM 33-51-06. INSTALLED SERVICEABLE BATTERY PACKS IAW AMM 33-51-06. REMOVED BATTERY PACK M1671 IAW AMM 33-51-06. INSTALLED A SERVICEABLE BATTERY PACK IAW AMM 33-51-06, PERFORMED SATISFACTORY OPS CHECK OF THE EMERGENCY LIGHT IAW AMM 33-51-06. INSTALLED THE ACCESS PANELS IAW AMM 21-23-03.

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