Service difficulty report · Battery Pack · Boeing 74747UF

Difficulty date
December 18, 2019
Submitted
December 19, 2019
Operation
Air carrier
Aircraft
N496MC
Make and model
Boeing 74747UF
Aircraft serial
29257
Aircraft time
81,439 hours, 13,487 cycles
Part
Battery Pack
Part number
BPS73
Part serial
46354
Condition
Inoperative
Location
Emergency Lights
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

DOOR 1L DOOR SILL LIGHTS AND NEARBY OUTER DOOR LIGHTS FOUND NOT ILLUMINATED.(<P>EMERGENCY POWER SUPPLY BATTERY ASSY (M5170) REPLACED AND OPERATIONAL TEST CARRIED OUT. RESULT NORMAL IAW <SPAN>AMM 33-51-04.</SPAN></P>)

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