Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
July 10, 2025
Submitted
July 11, 2025
Operation
Air carrier
Aircraft
N263AK
Make and model
Boeing 737990ER
Aircraft serial
62471
Aircraft time
31,242 hours, 10,172 cycles
Part
Power Supply
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.

What was found

EMERGENCY LIGHT BATTERY PACK M1676 FAILS OPS CHECK. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT POWER SUPPLY M1676 S/N 134060, OPS TEST CHECKS GOOD IAW B737NG AMM 33-51-06.