Service difficulty report · Battery Pack · Boeing 73776N

Difficulty date
April 21, 2020
Submitted
April 29, 2020
Operation
Air carrier
Aircraft
N7709A
Make and model
Boeing 73776N
Aircraft serial
32654
Aircraft time
50,510 hours, 25,115 cycles
Part
Battery Pack
Condition
Discharged
Location
Cabin
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

DEFECT TRANSFERRED FROM LOGPAGE 1187285; DEFECT: AFT ENTRY EMERGENCY EXIT LIGHT INOP. / RELAMPED AFT ENTRY EMERGENCY EXIT LIGHT AND NO CHANGE OCCURED TO INOP LIGHT. UPON FURTHER EVALUATION FOUND BAD EMERGENCY EXIT LIGHT BATTERY PACK M1673 AS PER AMM. 33-51-01-960-801 STEP 2.C(1.A.4)(1.C) (2-4) ADN WDM 33-51-14. BATTERY REPLACEMENT AND FUNCTIONAL TESTING WILL BE PERFORMED ON CCN # U171266 AVIO 5006 59132U 24APR20

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