# SDR IPXA2024020595863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2024
- Submitted: February 5, 2024
- Operation: Air carrier
- Aircraft: [N577UP](https://openairdocs.org/aircraft/N577UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35666
- Aircraft time: 56,101 hours, 8,695 cycles
- System (JASC): [3000 · Ice/Rain Protection System](https://openairdocs.org/jasc/3000)
- 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
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2024020595863

## Discrepancy

*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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.