Service difficulty report · Battery Pack · Boeing 74744AF

Difficulty date
September 29, 2017
Submitted
October 2, 2017
Operation
Air carrier
Aircraft
N572UP
Make and model
Boeing 74744AF
Aircraft serial
35669
Aircraft time
36,288 hours, 5,642 cycles
Part
Battery Pack
Part number
20131A
Part serial
99765
Condition
Inoperative
Location
Emergency Lights
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

UPPER DECK EMERGENCY LIGHTS L1853, L1854, AND L5735 ARE INOPERATIVE. REPLACED THE EMERGENCY LIGHT BATTERY PACK M5170 IAW AMM 33-51-04-902-001-001 REV 90.02. PERFORMED A SATISFACTORY EMERGENCY LIGHT TEST.

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