# SDR 9JLA2021101226577

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 3, 2021
- Submitted: October 12, 2021
- Operation: Air carrier
- Aircraft: [N268RB](https://openairdocs.org/aircraft/N268RB), registered now
- Make and model: Gulstm GIVXG450
- Aircraft serial: 4281
- Aircraft time: 2,131 hours, 1,304 cycles
- System (JASC): [2230 · Auto Throttle System](https://openairdocs.org/jasc/2230)
- Part: Autothrottle Sys
- Part number: 1159SCF5533
- Part serial: 139907
- Condition: Faulted
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2021101226577

## Discrepancy

THE FLIGHT CREW REPORTED THAT AUTO-THROTTLE 1 AND 2 WERE INTERMITTENTLY DISCONNECTING DURING ANY PHASE OF FLIGHT. OPERATIONS WERE CONTINUED PER MEL 22-1 UNTIL MAINTENANCE WAS AVAILABLE. THE MAINTENANCE TEAM TROUBLESHOT AND DETERMINED THE THROTTLE QUADRANT WAS AT FAULT. THE QUADRANT WAS REMOVED AND A INSPECTED UNIT WAS INSTALLED. OPERATIONAL CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.

---
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.