What was found
EMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1670 ARE INOP. GROUNDED - YES. REMOVED + REPLACED POWER SUPPLY M1670 S/N 129986 + INSTALLATION TEST GOOD IAW B737-900 AMM 33-51-06-960-806.
- Difficulty date
- September 15, 2025
- Submitted
- September 17, 2025
- Operation
- Air carrier
- Aircraft
- N481AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44106
- Aircraft time
- 37,117 hours, 11,501 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- D71702100
- Condition
- Inoperative
- Location
- Zone 200
- 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.