# SDR 2023F00353

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 22, 2023
- Submitted: December 26, 2023
- Operation: General aviation
- Make and model: Boeing 737-33R
- Registry model: [Boeing 737-33R](https://openairdocs.org/model/boeing-737-33r) (OpenAirDocs)
- Aircraft serial: 28868
- System (JASC): [7300 · Engine Fuel and Control](https://openairdocs.org/jasc/7300)
- Part: Mec
- Part number: 8063213
- Condition: Failed
- Location: Zone 400
- Stage of operation: CR
- How discovered: O
- Nature of condition: S
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2023F00353

## Discrepancy

ENGINE#1 N2 REACH AMBER BAND DURING CRUISE THRUST WAS REDUCED AT APROX 80%, THERE WAS SURGE ON THE ENGINE AND VIBRATION OF 3.0, THRUST WAS FURTHER REDUCED AND STABILIZED AT 70% N1. CORRECTIVE ACTION REMOVED AND REPLACED MAIN ENGINE CONTROL.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.