# SDR 97UAL900525

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N7274U
- Make and model: Boeing 727222
- Aircraft serial: 21421
- Engine: Pwa JT8D15
- System (JASC): [3010 · Airfoil Anti/De-ice System](https://openairdocs.org/jasc/3010)
- Part: Anti-Ice Valve
- Condition: Failed
- Location: Nr 3
- Component: Airesearch, 321464
- Stage of operation: NR
- Nature of condition: M
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97UAL900525

## Discrepancy

NR 3 WING ANTI-ICE VALVE SECURED CLOSED.  DUCT OVERHEAT LIGHT ON AND TEMPERATURE AT MAXIMUM.  PULLED BACK THRUST AND RETURNED TO DENVER.  *S/D*  REPLACED ANTI-ICE VALVE.

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