SDR UIEA2026040900180

Service difficulty report · Valve · Boeing 74745EF

Difficulty date: April 9, 2026
Submitted: April 13, 2026
Operation: Air carrier
Aircraft: N485MC
Make and model: Boeing 74745EF
Aircraft serial: 30607
Aircraft time: 113,190 hours, 19,962 cycles
System (JASC): 3610 · Pneumatic Distribution System
Part: Valve
Part number: 80217011
Part serial: 200511173
Condition: Faulted
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: A

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

What was found

DIVERSION FOR BLEED #4 STATUS MESSAGE, #3 BLEED DEFFERED. REPLACED BROKEN TERMINAL (EICAS BLEED 4) ON #4 HIGH PRESS BLEED VALVE #1 STUD IAW SWP 20-30-00. R/R #3 ENG PRV IAW AMM 36-11-19. OPS AND LEAK CHECK PASSED, PERFORMED HP ENG RUN PER 71-00-00. OPS CHECK OK, NO FAULTS. R/R PRV CONTROLLER PER AMM 36-11-20. LEAK CHECK PASSED,

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