Service difficulty report · Shutoff Valve · Boeing 74747UF

Difficulty date
July 29, 2026
Submitted
July 29, 2026
Operation
Air carrier
Aircraft
N499MC
Make and model
Boeing 74747UF
Aircraft serial
29260
Aircraft time
105,491 hours, 17,953 cycles
Part
Shutoff Valve
Part number
80217011
Part serial
890749
Condition
Faulted
Location
Bleed Sys
Stage of operation
TO
How discovered
O
Nature of condition
J
Precautionary procedure
C

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

What was found

DURING TAKEOFF ROLL, BLEED 2 ADVISORY MESSAGE CAME ON. TRANSFER TO DMI 256295 PER MEL 36-11-03 CATC DUE DATE 02AUG26. REMOVED AND REPLACE HPSOV IAW B747 AMM 36-11-03 AND OPS CHECK GOOD.

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