# SDR QXEA2025101400319

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 13, 2025
- Submitted: October 14, 2025
- Operation: Air carrier
- Aircraft: [N665QX](https://openairdocs.org/aircraft/N665QX), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000965
- Aircraft time: 3,602 hours, 3,202 cycles
- System (JASC): [2620 · Extinguishing System](https://openairdocs.org/jasc/2620)
- Part: Switch
- Part number: 4800713
- Condition: Failed
- Location: Zone 200
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QXEA2025101400319

## Discrepancy

DURING TASK CARD E175-26-22-09-720-801-A FUNCTIONAL TEST OF THE APU FIRE EXTINGUISHING SWITCH HARDWARE, THE TEST FAILED. REMOVED FIRE PANEL IAW AMM 26-20-01-000-801-A, REPLACED THE APU FIRE SWITCH IAW SPWM 20-33-01, REINSTALLED FIRE PANEL IAW AMM 26-20-01-400-801-A, OPS CHECK GOOD. APU SWITCH FUNC CHECK AMM 26-22-09-720-801-A, CHECKS GOOD.

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