Service difficulty report · Modulating Valve · Boeing 7673S1

Difficulty date
October 31, 2024
Submitted
November 6, 2024
Operation
Air carrier
Aircraft
N640GT
Make and model
Boeing 7673S1
Aircraft serial
25221
Aircraft time
99,213 hours, 21,210 cycles
Part
Modulating Valve
Part number
7738556
Part serial
880224
Condition
Defective
Location
Engine Fan
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

ENG #1 REPLACE THE LEFT FAN AIR MODULATING VALVE(<P>REMOVED DEFECTIVE VALVE REF 767 M/M 36-11-16-004-001-001. OK TO INSTALL SERVICEABLE UNIT. INSTALLED SERVICABLE FAMV AND LEAK AND OPS CHECK PER 767 36-11-16-404-015-006, NO LEAKS NOTED. OPS CHECK GOOD</P>)

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