# SDR ASAA2015012010288

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2015
- Submitted: January 20, 2015
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 10,492 hours, 3,146 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [7710 · Power Indicating System](https://openairdocs.org/jasc/7710)
- Part: Sensor
- Part number: 3204590030
- Condition: Intermittent
- Location: N2 Speed
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015012010288

## Discrepancy

NR 1 ENGINE ACMS DATA SHOWS INTERMITTENT N2 VALUES FROM OIP REPORT 7.  TAKEOFF AND CRUISE ACMS REPORTS SHOW NORMAL PARAMETERS.  ACFT GROUNDED.  REMOVE N2 SENSOR NR 1 ENGINE REF AMM 77-11-02-000-801-F00.  INSTALL N2 SENSOR REF 77-11-02-400-801-F00. ACCOMPLISH N2 SPEED SENSOR INSTALLATION TEST REF AMM 71-00-00-700-801-F00 & 71-00-00-700-805-F00.

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