# SDR RU3A20190524020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2019
- Submitted: June 5, 2019
- Operation: Air carrier
- Aircraft: N85
- Make and model: Cndair CL6002B16
- Aircraft serial: 5138
- Aircraft time: 12,348 hours, 5,055 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Selector Valve
- Part number: 601R751451
- Part serial: 0607T
- Condition: Failed
- Location: Mlg
- Part time: 3,395 hours, 1,307 cycles
- Stage of operation: AP
- How discovered: V
- Nature of condition: J
- Precautionary procedure: D, L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/RU3A20190524020

## Discrepancy

MAIN LANDING GEAR FAILED TO EXTEND HYDRAULICALLY(3X ATTEMPTS.) MANUAL EXTENSION WAS SUCCESSFUL. CORRECTED THE FAULT BY REPLACING THE MLG SELECTOR VALVE. THE AIRCRAFT IS RETURNED TO SERVICE.

---
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.