Service difficulty report · Anti-Ice System · Boeing 74745E

Difficulty date
October 9, 2025
Submitted
October 9, 2025
Operation
Air carrier
Aircraft
N579UP
Make and model
Boeing 74745E
Aircraft serial
26062
Aircraft time
122,136 hours, 20,615 cycles
Part
Anti-Ice System
Condition
Warning Message
Location
Nr 2 Engine
Stage of operation
CR
How discovered
V
Nature of condition
J
Precautionary procedure
O

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

What was found

**ATB**ANTI-ICE NAC 1, ANTI-ICE NAC 2, ANTI-ICE NAC 3, ANTI-ICE NAC 4 STATUS MESSAGE PERFORMED OPS TEST IAW AMM:31-21-00/501 REV.114<BR>FOUND SATIS.<BR>ALL TOOLS AND PARTS REMOVED FROM AIRCRAFT<BR>CRN97059690 / SCHROEDER / Q9DY421Y

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