Service difficulty report · Pressure Switch · Boeing 7673S1

Difficulty date
August 2, 2022
Submitted
August 3, 2022
Operation
Air carrier
Aircraft
N640GT
Make and model
Boeing 7673S1
Aircraft serial
25221
Aircraft time
95,449 hours, 20,398 cycles
Part
Pressure Switch
Part number
7738556
Part serial
901224
Condition
Inoperative
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

LH REV ISLN VALVE(<P>REMOVED LH T/R PRSOV PER 767-300 AMM 78-34-05-004-001. OK TO INSTALL SERVICEABLE UNIT. INSTALLED THE T/R PRSOV PER AMM 78-34-05-404-009-H00. OPS & LEAK CHECK GOOD PER 71-00-00, BUT T/R LH LIGHT REMAINED ON. REMOVED AND REPLACED DIRECTIONAL PILOT PRESSURE VALVE IAW AMM 78-34-01, PENDING OPS AND LEAK CHECK</P>)

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