Service difficulty report · Power Supply · Boeing 777223

Difficulty date
July 15, 2020
Submitted
July 21, 2020
Operation
Air carrier
Aircraft
N784AN
Make and model
Boeing 777223
Aircraft serial
29588
Aircraft time
81,023 hours, 9,772 cycles
Part
Power Supply
Part number
D71702001
Part serial
10810
Condition
Unserviceable
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

AIRCRAFT IN BASE MAINTENANCE, BATTERY DISCHARGED, R1 DOOR EPSU (EMERGENCY POWER SUPPLY UNIT), M33094. REMOVED AND REPLACED EPSU M33094 PER AMM 33-51-06, OPERATIONAL CHECK GOOD.