What was found
EMERGENCY LIGHT FUNCTIONAL TEST FOUND M5169 POWER SUPPLY FAILED, LOCATED AT BS 590, RBL 83, WBL 323. THE POWER SUPPLY BATTERY M5169 WAS REPLACED AND THE EMERGENCY LIGHTS TESTED NORMAL IAW AMM 33-51-04, AND 33-51-00.
- Difficulty date
- July 31, 2020
- Submitted
- August 4, 2020
- Operation
- Air carrier
- Aircraft
- N498MC
- Make and model
- Boeing 74747UF
- Aircraft serial
- 29259
- Aircraft time
- 86,454 hours, 13,625 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 20131A
- Part serial
- 1776
- Condition
- Inoperative
- Location
- Emergenc 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.