Service difficulty report · Battery · Boeing 74747UF

Difficulty date
May 29, 2021
Submitted
June 2, 2021
Operation
Air carrier
Aircraft
N493MC
Make and model
Boeing 74747UF
Aircraft serial
29254
Aircraft time
92,141 hours, 14,935 cycles
Part
Battery
Part number
BP573
Part serial
25059
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

FOUND EMERGENCY LIGHT L1382 ABOVE P461 PNL DIM(<P>IAW WDM 33-51-72 REV 52 PERFORMED WIRING CONTINUITY CHK AND THE RESULT WAS SATISFACTORY. IAW SMM 33-51-04-002-009-001, 33-51-004-402-012-001 REV 101, REPLACED EMER LIGHT POWER SUPPLY (M5168), IAW AMM 33-51-04-402-002-001 REV 101, PERFORM TEST OF EMER LIGHT POWER SUPPLY (M5168) AND THE RESULT WAS SATISFACTORY.</P>)

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