# SDR SWAA2020122137210

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2020
- Submitted: December 21, 2020
- Operation: Air carrier
- Aircraft: N744SW
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29490
- Aircraft time: 74,172 hours, 44,326 cycles
- Engine: Cfmint CFM567B242
- System (JASC): [7200 · Engine (Turbine/Turboprop)](https://openairdocs.org/jasc/7200)
- Part: Engine
- Condition: Power Loss
- Location: Nr 1
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2020122137210

## Discrepancy

NR 1 ENGINE N1 ROLLED BACK APPROX 15% AT CRUISE AND THEN RECOVERED AFTER 5-7 SECS AND HAD ASSOCIATED GRUMBLING NOISE FOR REMAINDER OF FLIGHT.  NO EEC LIGHT AND NO HIGH VIBE IND.

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