# SDR YYFAN20110719002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2011
- Submitted: July 20, 2011
- Operation: Air carrier
- Aircraft: N836NK
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53045
- Aircraft time: 41,307 hours, 28,746 cycles
- Engine: Pwa JT8D219
- System (JASC): [7711 · Engine Pressure Ratio (EPR)](https://openairdocs.org/jasc/7711)
- Part: Indicator
- Condition: False Indication
- Location: Epr
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YYFAN20110719002

## Discrepancy

NR1 EPR AND NR2 EPR HAVE ERRONEOUS READING, NR1 1.47, NR2 2.09 IN CRUISE AT 23.0' NOTE:A/T INOP AC RADIO INTO DISPATCH AND REPORTED THE DISCREPANCY;  MOC AND DISPATCH DEVERTED THE AC BACK TO DEPARTURE, WHERE MX CAN BE PERFORMED.

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