Service difficulty report · Shutoff Valve · Boeing 767322

Difficulty date
May 12, 2023
Submitted
May 15, 2023
Operation
Air carrier
Aircraft
N664UA
Make and model
Boeing 767322
Aircraft serial
29236
Aircraft time
84,839 hours, 18,373 cycles
Part
Shutoff Valve
Part number
7321870018
Part serial
90384
Condition
Leaking
Location
Rh Mlg Bay , Ctr
Stage of operation
DE
How discovered
V
Nature of condition
J, K
Precautionary procedure
K

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

What was found

C HYD QTY ILLUMINATED 7 HOURS INTO FLT HYD SYSTEM LEAK CHECK ACCOMPLISHED IAW AMM TASK ACCOMPLISHED IAW AMM TASK 27-51-48-022-001 & TASK 12-12-01-613-059. PARTS USED: 00-0606-3-0024,QTY :1 29-00-97-306-003. FLAP SLAT SHUT OFF MODULE OBSERVED TO BE 27-51-48-422-036. FLAP SLAT SHUT OFF MODULE TEST ACCOMPLISHED 76-2753-9-0003,QTY :1 40-0595-3-1983,QTY :1 40-0595-3-1984,QTY LEAKING. CENTRE HYD SYSTEM DEPRESSURIZED IAW AMM TASK IAW AMM TASK 27-51-48-712-074. ALL OPS NOW OK. ALL HYD SYSTEMS :1 1779868,QTY :1 29-11-00-862-055. FLAP SLAT SHUT OFF MODULE REPLACEMENT SERVICED TO FULL IAW AMM HYD SYSTEM SERVICED TO FULL REF AMM ROTABLE PARTS CHANGE WAS INDICATED - TT # 1779868 SN OFF 9026 MODULE, FLAP & OFF 76-2753-9-0003 9026 ON 76-2753-9-0003 2489