# SDR DXTA2022122276830

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 2022
- Submitted: December 22, 2022
- Operation: Air carrier
- Aircraft: [N348QS](https://openairdocs.org/aircraft/N348QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500259
- Aircraft time: 7,027 hours, 5,515 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Modulating Valve
- Condition: Faulted
- Location: Cockpit Temp
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2022122276830

## Discrepancy

LEVEL AT FL430,  HAD A DUCT 1 OVERTEMP CASS MESSAGE. RAN THE QRH & COULD NOT GET IT TO GO AWAY UNTIL PULLED THE THROTTLE TO IDLE.  DIVERTED AND LANDED WITH THE NR 1 THROTTLE AT IDLE.  REMOVED COCKPIT TEMPERATURE MODULATING VALVE AND INSTALLED OVERHAULED COCKPIT TEMPERATURE MODULATING VALVE IAW AMM 21-61-02.  OP CHECKED GOOD, NO FAULTS.  REMOVED DUCT TEMPERATURE SENSOR AND INSTALLED NEW DUCT TEMPERATURE SENSOR IAW 21-61-03-000-801-A AND 21-61-03-400-801 OP CHECKED GOOD,  NO FAULTS.

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