What was found
DURING EMERGENCY LIGHT TEST, BATTERY PACK M1670 FAILED. REMOVED AND REPLACED BATTERY PACKS M1670 IAW WORK CARD3502921-0000-0037. EMERGENCY LIGHTS TEST GOOD FOR SERVICE.
- Difficulty date
- July 14, 2026
- Submitted
- July 15, 2026
- Operation
- Air carrier
- Aircraft
- N37521
- Make and model
- Boeing 7379
- Aircraft serial
- 64497
- Aircraft time
- 18,129 hours, 6,039 cycles
- System (JASC)
- 3350 · Emergency Lighting
- 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.