SDR IPXA2024020595863

Service difficulty report · Anti-Ice Valve · Boeing 74744AF

Difficulty date: February 4, 2024
Submitted: February 5, 2024
Operation: Air carrier
Aircraft: N577UP
Make and model: Boeing 74744AF
Aircraft serial: 35666
Aircraft time: 56,101 hours, 8,695 cycles
System (JASC): 3000 · Ice/Rain Protection System
Part: Anti-Ice Valve
Part number: UNKNOWN
Condition: Warning Message
Location: Unknown
Stage of operation: CR
How discovered: 9
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

*DIVERSION* NAI VALVE 3 EICAS MSG FOLLOWED BY BLD 3 OVHT/PRV, DID NOT RESET VIA QRH PROC. DURING ACCOMPLISHMENT OF THE OPS TEST OF THE PRV/ PRVC / HPSOV WHILE ENGINES RUNNING, CARRIED OUT OPS TEST OF THE NAI IAW AMM 30-21-00-710-801-001, ALL FOUND SATISFACTORY.

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