What was found
EMERGENCY LIGHTS - OPERATIONAL TEST WITH THE TEST SWITCHES PROCEDURE - ALL EMERGENCY LIGHTS CONNECTED TO POWER SUPPLY M33099 INOP REPLACED BATTERY PACK AT M33098 REF AMM 33-51-06-960-802. OPS CK GOOD.
- Difficulty date
- February 26, 2026
- Submitted
- February 27, 2026
- Operation
- Air carrier
- Aircraft
- N776UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26937
- Aircraft time
- 108,845 hours, 20,089 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- ADD71701100
- 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.