Service difficulty report · Battery · Boeing 777222

Difficulty date
April 2, 2019
Submitted
April 5, 2019
Operation
Air carrier
Aircraft
N787UA
Make and model
Boeing 777222
Aircraft serial
26939
Aircraft time
94,043 hours, 12,763 cycles
Part
Battery
Part number
ADD71701100
Condition
Discharged
Location
Emergency Light
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

EMER LIGHT TEST FOUND M33406 BATTERY CAN NOT CHANGE. REPLACED THE M33406 BATTERY AT L3 DOOR. EMER LIGHT SYSTEM OPERATION TEST FOUND NORMAL REF AMM 33- 51-06-960-803 REV.85.