Service difficulty report · Relay · Boeing 7673JHF

Difficulty date
June 10, 2021
Submitted
June 14, 2021
Operation
Air carrier
Aircraft
N644GT
Make and model
Boeing 7673JHF
Aircraft serial
37810
Aircraft time
21,771 hours, 5,185 cycles
Part
Relay
Part number
4200353
Part serial
1797
Condition
Faulted
Location
Equip Valve
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

AT 0848Z PASSING FL 250 EICAS MSG "FWD EQPT VAL" WITH EQUIP COOLING VALVE LIGHT QRH ACCOMPLISHED MSG AND VALVE LIGHT OUT WITH EQUIP COOLOING IN STBY(<P>TRANSFERRED TO MDDR 148333 IAW MEL 21-58-01-01, CAT C.</P><P>LP 1483009: REMOVED AND REPLACED K10717 MANIFOLD INT VLV STBY RELAY AND K2275. TWO PACK ON RELAY AND THEN CHECKED OKAY PER WDM 21-58-16 AND FIM TASK 21-58. OPS CHECK GOOD. REMOVED AND REPLACED V90 MANIFOLD INTERCONNECT VALVE AS PER AMM 21-58-01/401. ALSO REMOVED AND REPLACED V900 FDARS SHUTOFF VALVE SYSTEM OPS CHECKED OKAY AS PER AMM 21-58-43/401 AND AMM 21-58-001/501 REMOVED PLACARD. THIS CLEARS MDDR #148333.</P>)

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