Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
January 30, 2026
Submitted
February 2, 2026
Operation
Air carrier
Aircraft
N260AK
Make and model
Boeing 737990ER
Aircraft serial
36349
Aircraft time
34,467 hours, 11,065 cycles
Part
Power Supply
Part number
D71702001
Condition
Faulted
Location
Zone 200
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

ROW 16 ABC EXIT SIGN COVER MISSING. GROUNDED - YES. RMVD AND REPLACED ROW 16 ABC EXIT LIGHT ASSY, DURING OPS CHK FOUND 16 ABC / 16 DEF EXIT LIGHTS BOTH INOP. RMVD AND REPLACED PWR SUPPLY FOR BOTH 16 ABC 16 DEF, OPS CHKS GOOD TEST / OPS CHKS GOOD REF: MM 33-51-01, MM 33-51-06 ALL C/B RESET (5) BATTERY PACK CAPACITY CHECK GOOD REF: MM 33-51-06.