What was found
AFT LEFT EMERGENCY LIGHT FAILED FUNCTIONAL CHECK. GROUNDED - YES. REPLACED M1673 BATTERY POWER SUPPLY REF BOEING AMM TASK 33-51-06-960-802. OP TEST GOOD WITH AFT LEFT EMERGENCY LIGHTS ILLUMINATING AS REQUIRED. NO FURTHER DEFECTS.
- Difficulty date
- August 10, 2026
- Submitted
- August 11, 2026
- Operation
- Air carrier
- Aircraft
- N920AK
- Make and model
- Boeing 7379
- Aircraft serial
- 44086
- Aircraft time
- 18,084 hours, 5,310 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- D71702001
- Condition
- Failed
- 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.