Service difficulty report · Valve · Boeing 7673JHF

Difficulty date
February 17, 2020
Submitted
February 19, 2020
Operation
Air carrier
Aircraft
N643GT
Make and model
Boeing 7673JHF
Aircraft serial
37809
Aircraft time
16,612 hours, 4,574 cycles
Part
Valve
Part number
79275515
Part serial
TLS20827
Condition
Malfunctioned
Location
Nr 2 Engine
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

FUNCTION FAIL - PRVC, FOUND NO. 2 ENG PRVC REFERENCE PRESSURE LESS THAN 12 PSI WHEN SUPPLY PRESSURE IS 20 PSI. (<P>IAW AMM 36-11-19-004-001-002 REV. 129 & AMM 36-11-19-404-014-002 REV. 129 REPLACED NO. 2 ENG PRVC WITH SERVICEABLE PARTS. IAW AMM 36-11-19-404-014-002 REV. 129 PERFORM NO. 2 ENG PRVC INSTALLATION TEST AND LEAK CHECK. RESULT NO LEAK FOUND AND CONDITION CHECK NORMAL.</P>)

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