Sunday, February 10, 2019

TL-Ultralight Sting Sport, N494N: Accident occurred November 17, 2018 in Clermont, Lake County, Florida

The National Transportation Safety Board did not travel to the scene of this accident.

Additional Participating Entity:

Federal Aviation Administration / Flight Standards District Office; Orlando, Florida

Aviation Accident Preliminary Report - National Transportation Safety Board:

Location: Clermont, FL
Accident Number: ERA19LA050
Date & Time: 11/17/2018, 1120 EST
Registration: N494N
Aircraft: ULTRALITE SRO Stingsport
Injuries: 1 Minor
Flight Conducted Under: Part 91: General Aviation - Personal 

On November 17, 2018, about 1120 eastern standard time, a TL-2000 StingSport, N494N, was substantially damaged during an in-flight separation of the horizontal stabilizer near Clermont, Florida. The sport pilot successfully deployed the Ballistic Recovery System (BRS) parachute and received minor injuries during the landing. Visual meteorological conditions prevailed, and no flight plan was filed for the flight which departed Arcadia Municipal Airport (X06), Arcadia, Florida about 1030. The personal flight was conducted under the provisions of Title 14 Code of Federal Regulations Part 91.

In a written statement, the pilot stated he was in cruise flight when he received an ADS-B traffic alert via a commercial application he had running on his smartphone. The traffic approached from his one o'clock position and closed at "a high rate of speed."

According to the pilot, he entered a shallow, descending turn to the left to increase separation with the traffic. As he levelled the airplane following the descent, he noted that his airspeed had increased to 138 knots. When he noted the airspeed, he "rapidly" reduced engine power below "50%" at which point the airplane yawed and entered a spin to the left. The pilot said he arrested the spin, and that the airplane initially responded to elevator inputs to raise the nose and level off. When the nose of the airplane pitched forward uncontrolled, the airplane entered a high-speed, nose-down descent, and the pilot deployed the BRS parachute.

According to Federal Aviation Administration (FAA) records, the pilot held a sport pilot certificate with a rating for airplane single-engine land. The pilot reported 182.8 total hours of flight experience; 67.4 hours of which were in the accident airplane make and model.

According to FAA records, the airplane was manufactured in 2005 and had accrued 337.5 total aircraft hours. It was equipped with a Rotax 912ULS, 100-horsepower engine that drove a fixed-pitch propeller. The published maneuvering speed (Va) was 118 knots.

The airplane's most recent annual inspection was completed December 1, 2017 at 319.1 total aircraft hours.

At 1156, weather recorded at Kissimmee Gateway Airport (ISM), 17 miles southeast of the accident site, included clear skies, visibility 10 miles, and winds from 090° at 5 knots. The temperature was 22° C, the dew point was 13° C; and the altimeter setting was 30.18 inches of mercury.

Examination of photographs revealed the airplane came to rest upright, with the nose landing gear collapsed. The horizontal stabilizer was separated from its mount and was located intact about 1,000 feet east of the main wreckage. The stabilizer mount plate and mounting studs themselves were intact and undamaged, but the composite structure and adhesive joints surrounding them were torn and peeled away from the main tail structure. The elevator push-pull tube was fractured at the point where the tube exited the empennage and the fracture surfaces displayed signatures consistent with overstress failure.

Aircraft and Owner/Operator Information

Aircraft Make: ULTRALITE SRO
Registration: N494N
Model/Series: Stingsport
Aircraft Category: Airplane
Amateur Built: No
Operator: Osuna Alfredo Iv
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual Conditions
Condition of Light: Day
Observation Facility, Elevation: ISM, 82 ft msl
Observation Time: 1656 UTC
Distance from Accident Site: 17 Nautical Miles
Temperature/Dew Point: 22°C / 13°C
Lowest Cloud Condition: Clear
Wind Speed/Gusts, Direction: 5 knots / , 90°
Lowest Ceiling: None
Visibility:  10 Miles
Altimeter Setting: 30.18 inches Hg
Type of Flight Plan Filed: None
Departure Point: Arcadia, FL (X06)
Destination: Apopka, FL (X04)

Wreckage and Impact Information

Crew Injuries: 1 Minor
Aircraft Damage: Substantial
Passenger Injuries: N/A
Aircraft Fire: None
Ground Injuries: N/A
Aircraft Explosion: None
Total Injuries: 1 Minor
Latitude, Longitude: 28.421389, -81.691111 (est)

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