Service difficulty report · Regulator Valve · Boeing 777323ER

Difficulty date
June 20, 2022
Submitted
June 22, 2022
Operation
Air carrier
Aircraft
N726AN
Make and model
Boeing 777323ER
Aircraft serial
31550
Aircraft time
34,788 hours, 4,049 cycles
Part
Regulator Valve
Part number
32153025
Part serial
5669
Condition
Faulty
Location
Zone 400 - Nac/P
Part time
34,788 hours, 4,049 cycles
Stage of operation
CR
How discovered
V
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: #1 ENGINE BLEED OFF EICAS MESSAGE. FLIGHT DIVERTED TO JFK, LANDING SAFELY. REPLACED #1 ENGINE PRESSURE REGULATING AND SHUTOFF VALVE (PRSOV) PER AMM 36-11-09. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECKS.