Service difficulty report · Actuator · Boeing 74747UF

Difficulty date
July 29, 2024
Submitted
August 2, 2024
Operation
Air carrier
Aircraft
N475MC
Make and model
Boeing 74747UF
Aircraft serial
29252
Aircraft time
99,839 hours, 18,612 cycles
Part
Actuator
Part number
MA11A1194
Part serial
T76147
Condition
Leaking
Stage of operation
CR
How discovered
O
Nature of condition
K
Precautionary procedure
E, A

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

What was found

SUSPECTED FUEL LEAK ENGINE 3. SHUTDOWN ENGINE 3 AT FL340. ENGINE 3 SHOWED OIL PRESSURE 11 PSI AFTER SHUTDOWN.(<P>PERFORMED DVI FOR ENG 3 FOR FUEL LEAKS, NO DEFECT NOTED. RAN ENG, NO DEFECTS NOTED, FUEL FLOW IND NORMAL PER AMM 71-00-00. R/R #3 XFEED VALVE ACTUATOR IAW AMM 28-22-02 & IPC 28-16-01-02. PER MCC REQ, PERFORMED HIGH POWER ENG RUN ON #2 & #3 ENG WITH NO SIGNIFICANT FUEL USAGE BETWEEN THE ENGINES IAW AMM 71-00-00. C/W OPS CHECK FOR #3 XFEED VALVE ACTUATOR IAW AMM 28-22-02. OPS CHECK NORMAL. NO DEFECTS NOTED. VERIFIED ACTUATOR. EICAS IND MATCH</P>)

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