Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
September 6, 2026
Submitted
September 15, 2026
Operation
Air carrier
Aircraft
N283AK
Make and model
Boeing 737990ER
Aircraft serial
36358
Aircraft time
31,243 hours, 10,010 cycles
Part
Power Supply
Part number
D71702001
Condition
No Test
Location
Cabin
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 M2627 FAILS OPS CHECK. GROUNDED - YES. REMOVED AND REPLACED M2627 POWER SUPPLY S/N 156123 IAW B737NG AMM 33-51-06. OPS CHECK GOOD.