NTSB Identification: LAX08LA268
14 CFR Part 91: General Aviation
Accident occurred Saturday, August 16, 2008 in Reno, NV
Probable Cause Approval Date: 05/12/2009
Aircraft: Rouse Glasair III, registration: N1YZ
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

The pilot reported that as he turned toward the airport to land, black smoke was coming from under the cowling. The airplane was losing power, airspeed, and altitude; however, he was able to maintain enough airspeed to clear a cliff before touching down short of the runway. The airplane encountered uneven terrain, and the landing gear sheared off. An inspection of the engine revealed that all spark plugs and the entire exhaust path were very sooty, which corresponded to rich operation. Examination of the fuel servo revealed that it had excessively worn throttle/mixture linkage arms and pins. In addition, the mixture control linkage spring washer was missing. This linkage section is vital to maintaining the correct flows at throttle open positions, and the play noted was excessive.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

The excessively worn throttle/mixture linkage arms and pins and a missing mixture control linkage spring washer, which resulted in a loss of power due to an excessively rich mixture.

Full narrative available

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