Service difficulty report · Valve · Boeing 73776N

Difficulty date
July 23, 2022
Submitted
July 27, 2022
Operation
Air carrier
Aircraft
N7731A
Make and model
Boeing 73776N
Aircraft serial
32677
Aircraft time
50,801 hours, 25,581 cycles
Part
Valve
Condition
Leaking
Location
#2 Engine
Stage of operation
CR
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

#2 ENG REACHED 922 ON CLIMB PILOTS REDUCED THRUST TO 900EGT WITHOUT AUTOTHROTTLES TO CRZ #2 FF WAS CONSISTENTLY HIGHER LEADING TO FUEL IMBALANCE #2 EGT WAS CONSISTENTLY HIGHER THAN #1 ENG BY 60*C. / [01] PERFORM EEC BITE TEST PER AMM 73-21-00; NO FAULTS FOUND. PERFORM MT 772-32-01; NO DEFECTS NOTED. PERFORM MT 736-00-02; FOUND PRSOV LEAKING AND HSR WORKING INCONSISTENTLY. R&R PRSOV PER AMM 36-11-04; AND HSR PER AMM 36-11-07. OPS CHECK GOOD. REFERENCE LOG PAGE 2038827.

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