Service difficulty report · Power Supply · Boeing 737990ER

Difficulty date
July 18, 2023
Submitted
July 20, 2023
Operation
Air carrier
Aircraft
N474AS
Make and model
Boeing 737990ER
Aircraft serial
40715
Aircraft time
30,098 hours, 9,454 cycles
Part
Power Supply
Part number
D71702001
Condition
Inoperative
Location
Main Cabin
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

EMERGENCY EXIT SIGN LIGHT OUT CENTER AISLE. GROUNDED - YES. REPLACED CENTER AISLE EMERGENCY EXIT LIGHT ASSY PER AMM 33-51-01. OPS CHK FAILED BLONG 07/19/2023 REMOVED AND REPLACED POWER SUPPLY M1695 REF AMM 33-51-06-960-806. 1 C/B OPENED, TAGGED, AND RESET. ALL OP TESTS PASS. CENTER AISLE EMERGENCY EXIT SIGN ASSY L1070 OP TEST PASS.