Service difficulty report · Shutoff Valve · Boeing 737823

Difficulty date
July 30, 2026
Submitted
August 3, 2026
Operation
Air carrier
Aircraft
N955AN
Make and model
Boeing 737823
Aircraft serial
29540
Aircraft time
72,091 hours, 31,045 cycles
Part
Shutoff Valve
Part number
32145526
Part serial
13521
Condition
Inoperative
Location
Zone 400
Part time
37,938 hours, 16,392 cycles
Stage of operation
CL
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

AIRCRAFT WAS GROUNDED: ON INITIAL CLIMB OUT AT APPROXIMATELY 3,000 FEET, BLEED 1 BLEED TRIP LIGHT ILLUMINATED. DECESION MADE TO RETURN TO EWR AIRCRAFT LANDED OVERWEIGHT WITHOUT INCIDENT. ACCOMPLISHED QRH PROCEDURE AND LIGHT WOULD NOT EXTINGUISH. REMOVED PRSOV IAW AMM 36-11-04. WHILE REMOVING B NUT CONNECTED TO THE CONTROL PRESSURE SENSE LINE FOUND MISSING SEAL. INSTALLED NEW SEAL. INSTALLED NEW PRSOV IAW AMM 36-11-04. ACCOMPLISHED ENGINE RUN AND LEAK CHECK IAW AMM 71-00-00.