# SDR DXTA022220213791

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2021
- Submitted: February 22, 2021
- Operation: Air carrier
- Aircraft: [N445QS](https://openairdocs.org/aircraft/N445QS), registered now
- Make and model: Gulstm GIVXG450
- Aircraft serial: 4037
- Aircraft time: 10,258 hours, 4,988 cycles
- System (JASC): [2612 · Fire Detection](https://openairdocs.org/jasc/2612)
- Part: Control Unit
- Part number: 51653154
- Part serial: 3214
- Condition: Faulted
- Location: Fire Detection
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA022220213791

## Discrepancy

FIRE DETECTION LOOP FAULT CAS: DURING FLIGHT AMBER CAS "FIRE DETECTION LOOP FAULT" AND FIRE DETECTION, LEFT, LOOP A, FAULT ILLUMINATED. FOLLOWED QRH PROCEDURE. REPEAT WRITEUP // SIGN OFF // REMOVED AND REPLACED L/H FIRE DETECTION CONTROL UNIT IAW GULFSTREAM G450 AMM 26-15-01. PERFORMED ADJUSTMENT TEST OF FIRE DETECTION UNIT IAW GULFSTREAM G450 AMM 26-15-01. SYSTEM OPS CHECK GOOD, NO DISCREPANCIES NOTED AT THIS TIME. THIS CLEARS MEL.

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