Colorado Aviation Accidents & Incidents

On November 24, 2008, approximately 1245 Mountain Standard Time, a single-engine, Kit Fox airplane, N4JU, was substantially damaged during a forced landing following a reported loss of engine power, shortly after takeoff from the Boulder Municipal Airport (KBDU), Boulder, Colorado. The commercial rated pilot received minor injuries. The airplane was registered and operated by a private individual. Visual meteorological conditions prevailed and a flight plan was not filed for the 14 Code of Federal Regulations Part 91, cross-country flight.

A Federal Aviation Administration (FAA) Inspector, who responded to the accident site, reported that the airplane was largely consumed by a post-crash fire. During the forced landing, the airplane hit a fence before coming to rest in an open field near airport property.

The pilot reported to the FAA had he just purchased the airplane and was ferrying it back to his home when the accident flight occurred. In his written statement, the pilot reported that during the take-off, the airplane's electrically operated propeller started to increase propeller pitch. He tried to decrease the pitch, but each time he released the control stick mounted propeller button, the propeller pitch would increase. After the prop went to a high pitch angle and the engine started to run "rough", the pilot elected to conduct a forced landing and turned back to the runway. The pilot added, he managed to reduce the propeller pitch, but "a secondary failure of the propeller indicator [occurred], reading maximum pitch when in reality it was zero-degree's pitch." He was able to exit the airplane before the post-crash fire erupted.

A witness reported that he saw the accident airplane depart the runway and that it "seemed to be having trouble producing power, [but it] continued taking-off. At approximately 100-feet it seemed to stop producing power altogether." The witness added he saw the smoke and flames and rushed to the scene; where the pilot appeared in "good shape" and was stating that, "the prop went into reverse."

A Certified Flight Instructor (CFI), who flew with the accident pilot on two previous flights, reported that the airplane had excellent handling characteristics and that the propeller turned "anti-clockwise." The CFI added that the propeller controls for pitch are two buttons on the top end of the control stick (one to increase and the other to decrease pitch). He added that it was easy to inadvertently touch and to confuse which button increased and which button decreased propeller pitch. The CFI also noted that it was easy to confuse the propeller pitch buttons with similar elevator trim buttons located on the control stick. The CFI added that on several occasions he and the accident pilot mistakenly used the propeller control the wrong way. During the second flight with the accident pilot, the CFI said that they planned to practice takeoff and landings. During one of the takeoffs, the CFI accidentally coa