# SDR 20000615AP018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2000
- Submitted: May 31, 2000
- Operation: Air carrier
- Aircraft: [N104NL](https://openairdocs.org/aircraft/N104NL), registered now
- Make and model: Lkheed 1011*
- Aircraft serial: 1931203
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Check Valve
- Part number: 725323
- Condition: Leaking
- Location: Rt Mlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000615AP018

## Discrepancy

LANDING GEAR DOOR LIGHTS ON, GEAR DID NOT RETRACT ALONG WITH A LOSS OF C SYSTEM HYDRAULIC.  MAIN LANDING GEAR WAS MANUALLY DEPLOYED.  AIRCRAFT LANDING NORMAL.  FOUND RIGHT MLG DOOR ACTUATOR CONTROL CHECK VALVE LEAKING.  REPLACED PACKING AND BACKUP RINGS IAW 32-33-02.  OPS CHECKED NORMAL.  REPLENISHED C SYSTEM HYDRAULIC FLUID IAW 12-13-00.  AIRCRAFT RETURNED TO SERVICE.  (M)

---
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.