Tomei S12 XL accident near Pleasant Grove, CA
On April 3, 2011, a Tomei S12 XL (airplane) was involved in an accident near Pleasant Grove, CA. 1 person died. Damage to the aircraft: substantial.
- Date
- April 3, 2011
- Place
- Pleasant Grove, CA
- Aircraft
- Tomei S12 XL · Airplane
- Injuries
- 1 fatal, 0 serious, 0 minor
- Damage
- Substantial
- Position
- 38.872°N, 121.471°W
- NTSB ID
- 20110403X10730
Official records · WPR11LA183
- Public docket: reports, statements and exhibits from the investigation
NTSB summary
HISTORY OF FLIGHT On April 3, 2011, about 1253 Pacific daylight time, an experimental amateur built Tomei Rans S12 XL airplane, N8113N, collided with the ground shortly after takeoff from a private airstrip near Pleasant Grove, California. The certificated sport pilot was fatally injured. The airplane sustained substantial damage to the forward fuselage, empennage and wing assembly. The airplane was registered to the pilot, and operated under the provisions of 14 Code of Federal Regulations Part 91 as a personal flight. Visual meteorological conditions prevailed and no flight plan was filed for the local flight. A pilot rated witness, who was an acquaintance of the pilot, stated that the airplane landed at the private airstrip about 1150. The witness reported that he and the pilot talked for 30-45 minutes and among other things, discussed flying to another airstrip south of their location as a flight of two. The witness reported that while he was doing a run-up, he watched the accident airplane depart to the northwest. Shortly after takeoff, as the accident airplane reached an altitude between 200 to 300 feet above ground level, it appeared to slow down, bank to the left, and subsequently spiraled to the ground. During a separate conversation, the witness reported that the accident airplane was airborne “a couple of minutes” after the engine was started. TESTS AND RESEARCH The airplane was equipped with a 2-stroke Rotax 582 liquid cooled, 2-cylinder piston engine; serial number 4656067. Engine total time since new was 318.6 hours. Post accident examination of the engine rev
Probable cause
The pilot’s failure to allow the airplane’s engine to properly warm up before applying takeoff power, which resulted in the forward cylinder's piston seizing and a subsequent loss of engine power. Also causal was the pilot's failure to maintain an adequate airspeed after the loss of engine power, which resulted in a stall-spin.
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Source: NTSB aviation accident database (US government, public domain). Findings may be preliminary or later revised by the NTSB. Not a complete global record.
