# SDR 9JLA2020120220245

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 23, 2020
- Submitted: December 2, 2020
- Operation: Air carrier
- Aircraft: [N780BH](https://openairdocs.org/aircraft/N780BH), registered now
- Make and model: Lear 45LEAR
- Aircraft serial: 45431
- Aircraft time: 2,674 hours, 2,289 cycles
- System (JASC): [3418 · Stall Warning System](https://openairdocs.org/jasc/3418)
- Part: Computer
- Part number: 6627308500015
- Part serial: 381
- Condition: Defective
- Location: Stall Warning
- Stage of operation: IN
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2020120220245

## Discrepancy

A FLIGHT WAS CANCELLED WHEN THE FLIGHT CREW PERFORMING PREFLIGHT CHECKS DISCOVERED A FAULT WITH THE RIGHT STALL WARNING SYSTEM.  THE MAINTENANCE TEAM TROUBLESHOT AND DETERMINED THE STALL WARNING COMPUTER WAS DEFECTIVE.  THE DEFECTIVE COMPUTER WAS REMOVED AND A SERVICEABLE COMPUTER WAS INSTALLED.  OPERATIONS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.

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