# SDR 97UAL900503

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N780UA](https://openairdocs.org/aircraft/N780UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26944
- Engine: Pwa PW4077
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: P2/T2 Probe
- Condition: Blocked
- Location: Lt Engine
- Component: Rosemount, 154GT
- Stage of operation: TO
- Nature of condition: R
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/97UAL900503

## Discrepancy

LEFT ENGINE TAKEOFF THRUST TOO LOW.  N1, N2 AND FUEL FLOW NORMAL FOR OBSERVED EPR (ENGINE PRESSURE RATIO).  *S/D*  MAINTENANCE REPLACED THE NR 1 ENGINE P2/T2 PROBE ACCOUNT INSECT LODGED IN TEMPERATURE SENSOR AIR PASSAGE.

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