# SDR DXTA2026052108152

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2026
- Submitted: May 21, 2026
- Operation: Air carrier
- Aircraft: [N915QS](https://openairdocs.org/aircraft/N915QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0336
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Check Valve
- Part number: 1C5230
- Condition: Leaking
- Location: Zone 700
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026052108152

## Discrepancy

NOSE GEAR FAILED TO RETRACT IN NORMAL SEQUENCE UPON SELECTING GEAR -UP AFTER TAKEOFF.  CAS MSG APPEARED.   APPROX 30SEC LATER, WITH NO ADDITIONAL INPUT, NOSE GEAR RETRACTED AND NORMAL GEAR -UP ICONS DISPLAYED.  GEAR DEPLOYED NORMALLY TO 3GREEN UPON SELECTING GEAR DOWN.  DURING CHECK OF RETURN CHECK VALVE, TECHS FOUND CHECK VALVE TEE FAILED INTERNALLY.   R & R CHECK VALVE. OPS CHECKED GOOD. SWUNG GEAR 15 TIMES & EACH CYCLE WAS 8 SECS TO FULL RETRACT, AROUND 30 SECS TO WHITE -UP-.   WITHIN LIMITS, BLED HYD SYS & RESERVICED TO PROPER LEVEL. ENSURED NO CASS MESSAGES DURING ALL OPS CHKS.  





---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.