What was found
CABIN UPPER DECK EMERGENCY LIGHT POWER SUPPLY M5937, TROUBLESHOOTING FOUND LOW VOLTAGE OUTPUT. POWER SUPPLY REPLACED & OPS TESTED NORMAL IAW AMM.
- Difficulty date
- October 2, 2013
- Submitted
- October 28, 2013
- Operation
- Air carrier
- Aircraft
- N127UA
- Make and model
- Boeing 747422
- Aircraft serial
- 28813
- Aircraft time
- 56,281 hours, 6,537 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 20131A
- Part serial
- M5937
- Condition
- Failed
- 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.