Service difficulty report · Shutoff Valve · Boeing 777224

Difficulty date
July 6, 2022
Submitted
July 6, 2022
Operation
Air carrier
Aircraft
N76021
Make and model
Boeing 777224
Aircraft serial
39776
Aircraft time
52,953 hours, 5,175 cycles
Part
Shutoff Valve
Part number
NA
Condition
Leaking
Location
Mid Galley
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

MID GALLEY LEAKING WATER FROM CEILING. SLOWED AFT ER BOTH H2O VA LVES CLSD. ALL AREAS ABOVE THE GALLEY INSPECTED AND FOUND TO BE DRY AND CONDENSATION FOUND ON THE FILTER, CHILLER CATCH TRAY CONFIRMED LHR. INSULATION ABOVE GALLEY PEELED BACK AND CHECKED, NO DUSTY. ALL WATER SUPPLY LINE CONNECTIONS INSPECTED WITH WATER DRY AND CHILLER EXHAUST FLUE CHECKED AND NO SIGNS OF ANY EVIDENCE OF CONDENSATION BUILD UP. PRESSURE SUPPLIED AND DEMAND ON SYSTEM, NO LEAKS FOUND. CHILLERS MOISTURE. STEAM OVEN AND COFFEE MAKERS OPERATED CONTINUOUSLY OPERATED CONTINUOUSLY ON GND TO SIMULATE CONDITIONS, NO WITH ZERO EVIDENCE OF LEAKS. H2O QTY SHOWS FULL ON ARRIVAL INTO GALLEY LIGHTS OPERATED AND NO FLICKERING NOTED. ALL WATER SHUT OFF VALVES HAVE BEEN RE-INSTATED.