What was found
FOUND M5055 POWER SUPPLY MALFUNCTION. (REPLACE) IAW AMM 33-51-04-902-001-001 REV.115 REPLACED POWER SUPPLY (M5055) AT UPPER DECK LEFT SIDE AND PERFORMED POWER SUPPLY TEST, THE RESULT WAS SATISFACTORY.
- Difficulty date
- February 23, 2026
- Submitted
- February 25, 2026
- Operation
- Air carrier
- Aircraft
- N578UP
- Make and model
- Boeing 74745E
- Aircraft serial
- 27154
- Aircraft time
- 125,972 hours, 21,214 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 20131A
- Part serial
- 56820
- Condition
- Inoperative
- Location
- Zone 200
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.