Service difficulty report · Shutoff Valve · Boeing 76731K

Difficulty date
October 3, 2019
Submitted
October 7, 2019
Operation
Air carrier
Aircraft
N1373A
Make and model
Boeing 76731K
Aircraft serial
27205
Aircraft time
100,010 hours, 20,845 cycles
Part
Shutoff Valve
Part number
125334D
Part serial
P30527
Condition
Malfunctioned
Location
Fuel System
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

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

What was found

FUEL MIGRATION ISSUE. PER MCC REQUEST, CHANGE FWD X-FEED VALVE ACTUATOR. (REF LP 1098413 - 1231398)(<P>LP 1231398 - M10: REMOVED AND REPLACED FWD UPPER FUEL X-FEED VALVE ACTUATOR PER AMM 28-22-12, OPS CHECK AND LEAK CHECK GOOD AT THIS TIME. OFF PART (PN: MA30A1001, SN: AA324329D) </P><P>LP 1231399 - M13: PERFORMED ADJUSTMENT CHECKS ON FWD AND AFT CROSSFEED ADAPTER SHAFTS. NO DEFECTS NOTED AT THIS TIME. REF B767 AMM 28-22-02.</P><P>LP 1231399 - M15: PER ATLAS REQUEST HOLD OFF ON CHANGING AFT CROSSFEED VALVE ACTUATOR FOR FURTHER T/S. PERFORMED OPS TEST OF ACTUATORS IAW B767 AMM 28-22-02. NO DEFECTS NOTED AT THIS TIME. OPS CHECK GOOD.</P><P>LP 1231400 - M17: C/W PHASE CHECK OF FUEL PUMPS WIRING IAW B767 AMM 28-22-00. PHASE CHECK GOOD.</P><P>LP 1231400 - M18: C/W SHAFT ALIGNMENT CHECK IAW B767 AMM 28-22-02. ALIGNMENT DONE CORRECTLY, NO OUT OFF ALIGNMENT.</P><P>LP 1231401 - M19: REMOVED AND REPLACED RH CROSSFEED ACTUATOR AFT IAW 28-22-02-404-059. OPS CHECK GOOD. OFF PART (PN: MA30A1017, SN: AA639281)</P><P>LP 1231402 - M22: REMOVED AND REPLACED THE FWD CROSSFEED VALVES IAW AMM 28-22-02-004-153. OPS CHECK DUE. REF LP 1231404 ITEM M28 FOR OPS CHECK. (PN: 125334D, SN P30516)</P><P>LP 1231403 - M25: REMOVED AND REPLACED THE AFT CROSSFEED VALVE IAW B767 AMM 28-22-02-004-153. OPS CHECK DUE. REFER TO ITEM M28 LP 1231404 FOR OPS CHECK.<BR DATA-MCE-BOGUS="1" /></P><P>LP 1231404 - M28: PERFORMED OPS CHECK IAW AMM 28-22-02-004-153. OPS CHECK GOOD.</P>)

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