Service difficulty report · Power Supply · Boeing 737890

Difficulty date
June 7, 2026
Submitted
June 9, 2026
Operation
Air carrier
Aircraft
N564AS
Make and model
Boeing 737890
Aircraft serial
35103
Aircraft time
70,910 hours, 21,552 cycles
Part
Power Supply
Part number
D71701100
Condition
Inoperative
Location
Zone 200
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

TWO EXTERIOR EMERGENCY LIGHT WOULD NOT WORK PROPERLY AT LT OVERWING EXIT AFT LIGHT AND LT AFT FUSELAGE LIGHT AND RIGHT AFT FUSELAGE LIGHT. SRXR430X. GROUNDED - YES. AFTER T/S FOUND BATTERY PACK M1670 AND M1671 BAD IAW WDM 33-51-13 AND 33-51-14. REMOVED AND REPLACED BATTERY PACK M1670 AND 1671 IAW AMM 33-51-06-960-805. PERFORMED OPS CHECK EMERGENCY LIGHT IAW AMM 33-51-00-710-801 TEST GOOD.