What was found
AIRCRAFT IN BASE MAINTENANCE/STORAGE. R4 EMERGENCY LIGHTS, POWER SUPPLY M33408 FAILED TEST. REMOVED AND REPLACED R4 EPSU (EMERGENCY POWER SUPPLY UNIT) M33408.
- Difficulty date
- July 1, 2020
- Submitted
- July 2, 2020
- Operation
- Air carrier
- Aircraft
- N788AN
- Make and model
- Boeing 777223
- Aircraft serial
- 30011
- Aircraft time
- 75,783 hours, 9,922 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- D71702001
- Part serial
- 155694
- Condition
- Failed
- 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.