What was found
WHILE PERFORMING T/C 78233001 FOUND BATTERY PACK M1673 FAILING CAPACITANCE CHECK. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK M1673 REF SMM 33-51-14-103 AND AMM 33-51-06. INSTALL TEST OK.
- Difficulty date
- August 6, 2026
- Submitted
- August 7, 2026
- Operation
- Air carrier
- Aircraft
- N559AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35178
- Aircraft time
- 67,226 hours, 20,577 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- D71702001
- 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.