- Difficulty date
- November 4, 2025
- Submitted
- November 6, 2025
- Operation
- Air carrier
- Make and model
- Boeing 7379
- Aircraft serial
- 44079
- Aircraft time
- 16,839 hours, 5,050 cycles
- Part
- Battery Pack
- Part number
- D71701100
- Condition
- No Test
- 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.
What was found
IN REFERENCE TASK CARD 33-055-00, EMERGENCY LIGHTS BATTERY PACK M1673 FAILED CAPACITY FUNCTIONAL CHECK. GROUNDED - YES. M1673 FAILED RETEST PER TASK CARD. REMOVED AND REPLACED AND RESTED EMERGENCY LIGHTS BATTERY PACK M1673 PER AMM 33-51-06-960-802. INSTALLED AND REMOVED 3 MIG-51A TAGS.