Service difficulty report · Shutoff Valve · Boeing 7673JHF

Difficulty date
August 6, 2021
Submitted
August 10, 2021
Operation
Air carrier
Aircraft
N644GT
Make and model
Boeing 7673JHF
Aircraft serial
37810
Aircraft time
21,944 hours, 5,274 cycles
Part
Shutoff Valve
Part number
7998014
Part serial
921113
Condition
Faulted
Location
Nr 1 Engine
Stage of operation
IN
How discovered
V
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

PERFORM #1 ENG PRSOV HEALTH CHECK, IND BIT 26, BIT 27 CANNOT CHANGE (J/C 6736A005 PAGE 33 PART 4 STEP 11.6)(<P>IAW WDM 36-11-51 REV 34 AND WDM 36-23-11 REV 34 PERFORM WIRING CONTINUITY CHECK, THE RESULT WAS SATISFACTORY. IAW AMM 36-11-09-002-033-001 REV 132 AND AMM 36-11-09-402-058-001 REV 132 REMOVED AND REPLACED #1 ENG PRSOV WITH NEW PARTS. IAW AMM 36-11-09-402-058-001 REV 132 ACCOMPLISH THE #1 ENG PRSOV POST INSTALLATION TEST. CONDITION CHECK SATISFACTORY AND NO LEAK FOUND</P>)

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