# SDR 2026FA0000537

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2026
- Submitted: June 24, 2026
- Operation: General aviation
- Make and model: Beech B200GT
- Registry model: [Beech B200GT](https://openairdocs.org/model/hawker-beechcraft-b200gt) (OpenAirDocs)
- Aircraft serial: BY472
- Aircraft time: 704 hours, 233 cycles
- Engine: Pwa PT6A50
- Propeller: Hartzl HCE4N3
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Autothrottle Sys
- Part number: 1D88129
- Condition: Abnormal
- Location: Zone 100
- Part time: 704 hours, 233 cycles
- Stage of operation: TO
- How discovered: V
- Nature of condition: J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000537

## Discrepancy

PILOTS HAVE REPORTED MULTIPLE INSTANCES OF AUTOTHROTTLE INDUCED WARNING/RED TORQUE INDICATIONS OCCURRING DURING TAKEOFF, GO-AROUND, AND CLIMB PHASES OF FLIGHT ON SIX DIFFERENT AIRCRAFT (S/N BY-472 AND UP). THREE INSTANCES WERE SEVERE ENOUGH TO ACTIVATE THE MASTER WARNING FLASHERS AND AURAL “ENGINE FIRE” ALERTS; ONE INSTANCE RESULTED IN AN ENGINE TORQUE EXCEEDANCE PER THE PT6A-52 MAINTENANCE MANUAL.

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