N898N is a 2006 Tl Ultralight Sro STINGSPORT. It is a fixed-wing single-engine aircraft with 2 seats, powered by a Bombardier ROTAX (ALL). The registration is active, with the registrant based in Fort Myers, FL. Its light-sport airworthiness certificate was issued in Mar 2006. This page also carries 1 NTSB event.
- 20 years old
- 1 of 42 Tl Ultralight Sro STINGSPORT
2006
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On September 1, 2012, about 1130 mountain daylight time, a TL Ultralight SRO Stingsport airplane, N898N, conducted a forced landing after two of the propeller blades separated inflight near Longmont, Colorado. The airplane sustained substantial damage. The sport pilot and the designated pilot examiner (DPE) on board were not injured. The aircraft was registered to STING4FUN LLC and operated by the pilot under the provisions of 14 Code of Federal Regulations Part 91 as an instructional flight. Visual meteorological conditions prevailed for the flight, which operated without a flight plan. The flight originated from Erie Municipal Airport (KEIK), Erie, Colorado at 1100.
The DPE stated that while the pilot was conducting a steep turn demonstration at 2,500 feet above the ground, the engine began vibrating violently. The pilot aborted the maneuver and retarded the throttle to idle when the engine experienced a total loss of power. The pilot made an emergency landing in a nearby field. After the landing, the pilot and DPE noticed that two of the three propeller blades had separated from the propeller hub. The airplane sustained substantial damage to the firewall and engine mount.
The pilot, age 43, held a sport pilot certificate at the time of the accident. He received his private pilot certificate after the conclusion of the accident flight.
The airplane was a TL Ultralight SRO Stingsport, two-place, high wing, fixed gear, light sport airplane manufactured in 2006. An airworthiness certificate was issued for N889N on March 10, 2006. It was powered by a Bombardier Rotax engine and equipped with a 3 bladed WoodComp wooden propeller.
Visual inspections of the propeller and propeller hub and bolt torques were checked per the TL Ultralight SRO and WoodComp instructions. The inspections were completed on: August 1, 2009 at a total time of 158.4; August 3, 2009 at a total time of 361.2; August 12, 2010 at a total time of 680.9; and September 1, 2011 at a total time of 924.8.
According to WoodComp, the propeller inspections were required at 150 hour intervals.
An automated weather report at Erie, Colorado, 14 miles north of the accident site, was issued at 1134 and reported: wind from 020 degrees and 3 knots, 10 miles visibility, sky clear, temperature 29 degrees Celsius (C), dewpoint 3 degrees C, and pressure 30.12 inches of mercury.
The airplane was a TL Ultralight SRO Stingsport, two-place, high wing, fixed gear, light sport airplane manufactured in 2006. An airworthiness certificate was issued for N889N on March 10, 2006. It was powered by a Bombardier Rotax engine and equipped with a 3 bladed WoodComp wooden propeller.
Visual inspections of the propeller and propeller hub and bolt torques were checked per the TL Ultralight SRO and WoodComp instructions. The inspections were completed on: August 1, 2009 at a total time of 158.4; August 3, 2009 at a total time of 361.2; August 12, 2010 at a total time of 680.9; and September 1, 2011 at a total time of 924.8.
According to WoodComp, the propeller inspections were required at 150 hour intervals.
The airplane came to rest upright in a field. The engine mounts and firewall were bent during the forced landing. The rest of the airplane was otherwise unremarkable.
The remaining propeller blade and all three propeller sleeves were examined by the NTSB Materials Laboratory, Washington, DC. Each of the propeller blades and corresponding blades sleeves were labeled A, B, and C for identification purposes.
Blade A consisted of an entire blade sleeve and a small amount of fractured wood inside the sleeve. A tan powdery substance was noted in the sleeve and in the slots of the sleeve. The substance was tested and matched that of the wood propeller. Progressive cracks were evident in blade A between the blade and the metal sleeve.
Blade B consisted of an entire blade sleeve and a section of wood which remained attached to the sleeve and also extended out of the sleeve. The blade exhibited cracks in the wood that corresponded to the interface between the blade and the sleeve.
Blade C consisted of an entire blade sleeve and an entire wood blade and exhibited kinked fibers in the composite layer and crack features at the blade root near the metal sleeve.
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