# SDR 2006FA0000672

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2006
- Submitted: July 14, 2006
- Operation: General aviation
- Aircraft: LVWHD
- Make and model: Cessna 210M
- Registry model: [Cessna 210M](https://openairdocs.org/model/cessna-210m) (OpenAirDocs)
- Aircraft serial: 21061943
- Aircraft time: 4,530 hours
- Engine: Cont IO520L
- Propeller: Mcauly D3A32C88
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Diode
- Part number: IN4001
- Condition: Inoperative
- Location: Warning Unit
- Component: Warning Unit
- Component part number: 12707332
- Stage of operation: LD
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2006FA0000672

## Discrepancy

DURING LANDING, FORGOT TO EXTEND THE LANDING GEAR AND GEAR UP LANDING WAS CARRIED OUT.  ACCIDENT INVESTIGATION INCLUDED A SATISFACTORY OPS CHECK OF LANDING GEAR RETRACTION/EXTENSION SYSTEM, BUT WARNING HORN FAILED TO OPERATE.  AFTER DISASSEMBLING THE WARNING UNIT ASSEMBLY, A BURNED DIODE WAS FOUND OUT.  THEN CONSULTED SM AND REALIZED THAT THERE IS NOT A SPECIFIC ITEM TO CHECK THE OPERATION OF THE GEAR WARNING HORN.  THIS SITUATION ALSO TAKES PLACE WITH MFG SRM.  GEAR INDICATOR LIGHT AND WARNING HORN-CHECK FOR OPERATION (GEAR EXTENDED AND RETRACTED).

---
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.