# SDR ASAA2022021537517

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2022
- Submitted: February 23, 2022
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 52,836 hours, 15,761 cycles
- System (JASC): [7710 · Power Indicating System](https://openairdocs.org/jasc/7710)
- Part: Sensor
- Part number: 3205490050
- Part serial: EM172319
- Condition: Inoperative
- Location: #1 Engine
- Part time: 41,053 hours, 12,098 cycles
- 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/ASAA2022021537517

## Discrepancy

#1 ENGINE TREND DATA SHOWS GREATER THAN EXPECTED DATA SCATTER IN DELTA CORE SPEEDINDICATION ERRORS ARE SUSPECT. GROUNDED - YES. REMOVED AND REPLACED N2 SPEED SENSOR IAW B737-800 AMM 77-11-02. OPS AND LEAK CHECK GOOF REF AMM 71-00-00-800-811-F00.

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