# SDR DXTA2026010706447

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2026
- Submitted: January 7, 2026
- Operation: Air carrier
- Aircraft: [N326QS](https://openairdocs.org/aircraft/N326QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500385
- Aircraft time: 7,942 hours, 6,174 cycles
- System (JASC): [3620 · Pneumatic Indicating System](https://openairdocs.org/jasc/3620)
- Part: Shutoff Valve
- Part number: RYLB535055
- Part serial: 1230
- Condition: Faulty
- Location: Zone 400
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026010706447

## Discrepancy

YELLOW BLEED 1 FAIL CAS WHILE WAITING FOR TAKEOFF. PERFORMED THE QRH PROCEDURE AND WAITED AN ADDITIONAL 15 MIN WITH THE SWITCH IN AUTO, CAS WOULD NOT CLEAR.   ARRIVED AT AIRCRAFT AND PERFORMED CMC DOWNLOAD, THEN REMOVED LT PRSOV ACCESS PANEL ON PYLON AND PHYSICALLY CHECKED VALVE. VALVE STICKS AND IS HARD TO MOVE: TROUBLESHOT USING FIM-36-11-00-810-809-A - FAILURE OF LH PRSOV AND REPLACED VALVE SUCCESSFULLY OPS CHECKED IAW PHENOM 300 AMM 36-11-01. AIRCRAFT RESTORED TO ORIGINAL CONFIGURATION.

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