# SDR HBKA202604160001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 11, 2026
- Submitted: April 16, 2026
- Operation: Air carrier
- Aircraft: [N189K](https://openairdocs.org/aircraft/N189K), registered now
- Make and model: Raythn 390
- Aircraft serial: RB248
- Aircraft time: 3,491 hours, 4,079 cycles
- Engine: Wilint FJ442A
- Engine time: 3,465 hours, 4,046 cycles
- System (JASC): [7230 · Turbine Engine Compressor Section](https://openairdocs.org/jasc/7230)
- Part: Compressor
- Part number: 54897
- Condition: Failed Insp
- Location: Zone 400
- Part time: 3,465 hours, 4,046 cycles
- Component: Ening, Wilint
- Stage of operation: CL
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HBKA202604160001

## Discrepancy

SHORTLY AFTER TAKE OFF,  CREW WITNESSED THE LT ENGINE INDICATIONS STARTING TO ROLL BACK. THIS INDICATION HAPPENED BETWEEN 500 & 1000 FOR AGL. FELT THE DECELERATION OF THE ACFT. THE FLIGHT CREW REPORTED THERE WERE NO CAUTION OR WARNING LIGHTS PRESENT DURING THIS EVENT. THE ENGINE STOPPED ROLLING BACK AT IDLE SPEED WHERE IT REMAINED FOR THE REST OF THE FLIGHT. THERE WAS NO CONTROL OF THE THRUST ON THE LEFT ENGINE AFTER THE ENGINE STARTED ROLLING BACK FROM THE TAKE OFF THRUST SETTING. THE FLIGHT CREW AFTER ATTEMPTING TO REGAIN THRUST INPUT TO THE ENGINE LEFT THE THRUST LEVER AT IDLE FOR A LEFT TURN DOWNWIND AND LANDING AT THE SAME AIRPORT THEY DEPARTED FROM KCHA.  THERE WAS NO ABNORMAL NOISE OR VIBRATIONS.

---
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.