Service difficulty report · Shutoff Valve · Boeing 737823

Difficulty date
April 23, 2025
Submitted
April 24, 2025
Operation
Air carrier
Aircraft
N979AN
Make and model
Boeing 737823
Aircraft serial
29568
Aircraft time
46,945 hours, 19,799 cycles
Part
Shutoff Valve
Part number
EM91795
Part serial
70904556
Condition
Faulted
Location
Zone 100
Part time
10,192 hours, 10,192 cycles
Stage of operation
TX
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

AIRCRAFT WAS GROUNDED: WHILE TAXIING FOR TAKEOFF, GOT AN AMBER ANTI-SKID INOPERATIVE LIGHT ASSOCIATED WITH A RED PARKING BRAKE LIGHT. THE RED PARKING BRAKE LIGHT STAYS ILLUMINATED EVEN WHEN THE PARKING BRAKE LEVER IS RELEASED. BRAKES SEEM TO BE WORKING NORMALLY WHILE TAXIING. PER FIM 32-42-00-810-829. REMOVED AND REPLACED PARKING BRAKE SHUTOFF VALVE. PER AMM 32-44-21. OPERTIONAL AND LEAK CHECK GOOD.