# SDR CA990715010

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 5, 1999
- Submitted: March 26, 2000
- Operation: Air carrier
- Make and model: Fokker F.28 MK 1000
- Registry model: [Fokker F.28 MK 1000](https://openairdocs.org/model/fokker-f-28-mk-1000) (OpenAirDocs)
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Downlock
- Part number: 200429232
- Condition: Out Of Adjust
- Location: Nlg
- Component: Rotol, 200736001
- Stage of operation: CL
- Nature of condition: W, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990715010

## Discrepancy

(CAN) SHORTLY AFTER TAKEOFF WHEN THE GEAR SELECTED UP, THE NLG WOULD NOT RETRACT.  AIRCRAFT RETURNED TO BLOCKS.  THE LINKAGE FOR THE NLG DOWNLOCK WAS IMPROPERLY INSTALLED.  HAD BEEN REMOVED FOR LUBRICATION.  PROPERLY INSTALLED AND GEAR SWINGS SERVICEABLE.

---
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.