# SDR DXTA200811193363

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 19, 2008
- Submitted: June 12, 2009
- Operation: Air carrier
- Aircraft: [N367QS](https://openairdocs.org/aircraft/N367QS), registered now
- Make and model: Cessna 560CESSNA
- Aircraft serial: 5600367
- Aircraft time: 10,635 hours, 8,820 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Relief Valve
- Part number: 4614
- Part serial: 1447A
- Condition: Inoperative
- Location: Hyd System
- Part time: 8,821 cycles
- Stage of operation: CL
- 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/DXTA200811193363

## Discrepancy

AT GEAR RETRACTION, THE GREEN LIGHTS WENT OUT BUT THE RED GEAR UNLOCKED LIGHT REMAINED ILLUMINATED AND THE HYD PRESS LIGHT REMAINED ILLUMINATED.  REPEAT WRITE UP. FOUND HYD SYS RELIEF VALVE OPENING AND REGULATING AT 1100 PSI. SHOULD BE 1500 PSI. REMOVED AND REPLACED RELIEF VALVE WITH REPAIRED UNIT. OPS AND LK CK GOOD. LT SWINGS WERE GOOD. WORKED IAW MM 29-11-06, 12-12-00, 32-30-00

---
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.