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N4871N accident description

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Tail numberN4871N
Accident dateMarch 25, 2009
Aircraft typeCessna 182Q
LocationLexington, KY
Near 38.19 N, -84.353333 W
Additional details: None

NTSB description

On March 25, 2009, about 2159 eastern daylight time, a Cessna 182Q, N4871N, crashed into a wooded area 3 miles west of Blue Grass Airport (LEX), Lexington, Kentucky. The private pilot was killed, and the airplane was substantially damaged. Instrument meteorological conditions prevailed at the time of the accident, and an instrument flight rules flight plan was filed. The airplane was owned and operated by 4871N incorporated, under the provisions of 14 Code of Federal Regulations Part 91. The flight departed Bowling Green-Warren County Regional Airport (BWG), Bowling Green, Kentucky, at 2117 eastern daylight time.

Shortly after takeoff from BWG, the pilot contacted the Indiana Air Route Traffic Control Center (ARTCC). The ARTCC controller reported having difficulty communicating with the pilot because of poor radio reception. At 2126, the pilot told the ARTCC controller that he had a low voltage indication and that his "battery was draining down." The controller asked the pilot about the condition of his engine, and the pilot responded that his "engine was fine, but that his battery was draining" and that he may "lose radio communication." He said that if he lost communications or the instruments, he had an externally powered GPS, and back up communication transmitter. At 2147, the ARTCC controller identified the airplane at 37 nautical miles southwest of LEX, at 2,900 feet. The ARTCC controller stated that the pilot's altitude and course heading was fluctuating, although he continued to give him headings and altitude corrections.

The controller asked if the pilot wanted to declare an emergency, and if he needed equipment standing by. The pilot responded that he had broken out of the clouds, but was losing sight of the ground. The controller contacted the pilot to verify that he was not declaring an emergency. The pilot responded that he was not declaring an emergency, and that he did not need any equipment on standby, he just "needed help getting in." The ARTCC controller asked the pilot if he could maintain altitude and heading, and the pilot responded "affirmative." The pilot continued to descend and climb. Shortly thereafter, the controller advised the pilot that he was in a descending left turn. At 2159, ARTCC lost radar and radio communications with the airplane.

A witness in the area of the accident stated that the airplane "flew over his home and made two circles in approximately 30 seconds." The witness continued by saying that "the airplane sounded very close, and the engine sounded normal." The witness then heard the airplane hit the ground. He went outside, and located the downed airplane behind his home.

The pilot, age 57, held a private pilot certificate for airplane single engine land, and instrument airplane. His certificate was issued on December 14, 1993. He held a third-class medical certificate issued on February 12, 2008, with waivers for corrective lenses. Review of the pilot's logbook indicated that he had accumulated 1,693.1 total flight hours, and 380 flight hours of actual instrument time.

The airplane was manufactured in 1980 as a four-seat, high-wing airplane with fixed tricycle landing gear and powered by a Continental O-470-U (17), 230-horsepower engine. Review of the aircraft logbook revealed that an annual inspection was conducted on the engine on August 9, 2008, at a tachometer time of 1,819.3 hours, and a total time of 3,768.1 hours. The current Hobbs time indicated 3,900.1 hours.

The reported weather at LEX, located about 3 miles west of the accident site, at 2154 was: winds 190 degrees at 7 knots, visibility 8 miles and rain, 500 feet broken, overcast 1,400 feet, temperature 14 degrees Celsius (C), dew point 12 degrees C, and altimeter setting of 29.92 inches of mercury.

Examination of the accident site revealed that the aircraft impacted the ground on a 260 degree magnetic heading. The initial ground impact scar was approximately 1 foot deep and 8 feet long. The wreckage debris path, from the initial ground scar to the final resting place, of the wreckage was approximately 54 yards.

The airframe was substantially damaged by impact with the terrain, and fragmented along the wreckage path. All flight control surfaces were located at the wreckage site and impact damaged. All flight control cable separation points were consistent with tension overload. The smell of 100LL fuel was evident throughout the site. Both wings were breached and the fuel tank areas displayed signatures of hydraulic bulging at impact. Examination of the airframe and flight control system components revealed no evidence of preimpact mechanical malfunction.

The air (vacuum) driven attitude indicator gyro was recovered and examined. The gyro and gyro housing exhibited evidence of rotation. The electric driven turn-and-bank gyro was recovered (without its housing, instrument body, or face card) and examined. The gyro alone exhibited evidence of rotation with secondary scratches. The electric driven Direction Gyro Indicator gyro were recovered and examined. The gyro and gyro housing exhibited evidence of rotation. Only the face plates of the airspeed and vertical speed indicators were found.

Examination of the engine revealed heavy external impact damage. The engine was partially disassembled for examination. The top spark plugs were removed, and exhibited normal wear. The vacuum pump was still connected to the accessory housing, and was removed for examination. The vacuum pump coupling was intact, but the housing of the pump was impact damaged. The propeller assembly was separated from the crankshaft propeller attach flange. The blade hub was fragmented and both blades were located along the wreckage path. Both blades exhibited leading edge tip had gouge marks, and "S" bending.

(c) 2009-2011 Lee C. Baker. For informational purposes only.