# NTSB NYC00LA114: Loomis Sidewinder, N13545, Cincinnati, OH, April 15, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: April 15, 2000, 14:15 local (18:15 UTC) - Place: Cincinnati, OH - Coordinates: 39.110393, -84.420593 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=39.1104&lon=-84.4206&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report December 4, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 48966 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC00LA114 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/48966/pdf - Page: https://openairdocs.org/ntsb/NYC00LA114 ## Probable cause A partial power loss for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, climb - reason for occurrence undetermined (cause) - In flight collision with terrain/water, descent - uncontrolled ## Analysis The pilot aborted his first takeoff attempt due to 'engine problems.' He taxied back to the ramp and inspected the brakes, fuel, oil, and the engine. About 15 minutes later, after he could not find any anomalies, he attempted a second takeoff. During the second takeoff, about 200 feet in the air, the engine lost partial power and the airplane impacted terrain. The pilot did not know the flight time, or date of manufacture of the accident engine. He purchased the airplane in 1984 without any records on the engine. According to the engine manufacturer, it was originally produced as a ground power unit for the military, and not certificated for aircraft use. Specifically, the FAA noted that pistons, piston rings, and the connecting rod assembly were ineligible for use in certificated engines. Examination of the engine by a FAA inspector did not reveal the cause of the partial power loss. ## Factual narrative On April 15, 2000, about 1415 Eastern Daylight Time, a Sidewinder, a homebuilt airplane, N13545, was substantially damaged while departing Cincinnati Municipal Airport, Cincinnati, Ohio. The certificated private pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the personal flight conducted under 14 CFR Part 91. The flight was destined for Capital City Airport, Frankfort, Kentucky. The pilot stated that he performed a normal run-up, and departed on Runway 21L. About 200 feet in the air, the engine ran rough and lost partial power. Between 30 and 50 feet above the ground, the airplane stalled and impacted terrain approximately 500 feet beyond the runway. The pilot added that he was not sure why the engine lost power, but suspected that it may have been "vapor lock" or a "clogged finger screen." According to a witness and Air Traffic Control Specialists, the accident flight was the pilot's second takeoff attempt. About 15 minutes before the accident, he aborted a takeoff due to "engine problems" and taxied back to the ramp. The pilot inspected brakes, fuel, oil, and the engine. After he could not find any anomalies, he taxied out for the second takeoff attempt. When first interviewed by a FAA inspector, the pilot failed to mention the first takeoff attempt. However, in a subsequent written statement, the pilot stated "the aircraft acceleration seemed slow" during the first takeoff attempt. When asked about the engine, the pilot stated that he did not know the date of manufacture, or total flight time of the engine. When asked why, the pilot stated that he purchased the airplane in 1984, and "there were no papers on the engine." He did know that it was overhauled sometime before 1984. An Air Safety investigator at Textron Lycoming was provided with the engine serial number. He stated that the serial number corresponded to a O-290-G1B engine that was manufactured during the 1940's and 1950's. The investigator added that the engine was not manufactured for use in aircraft. It was primarily sold to the military as a ground power unit for generators or pumps. According to FAA Flight Standards Service Release 462, the following components of the engine were considered ineligible for use in a certificated aircraft engine: connecting rod assembly, piston, piston pin, piston ring-top compression, piston ring-2nd compression, and oil regulating ring. However, the engine was not required to meet certification standards as it was used in an airplane with an experimental certificate. A FAA inspector examined the engine. He noted that the fuel tank was approximately 1/2 full, and a fuel sample did not contain any visible contamination. The fuel gascolator screen, carburetor inlet screen, and fuel bowl were absent of debris. The carburetor float needle and seat appeared to be in good condition. When the inspector rotated the propeller by hand, thumb compression was attained on all cylinders. Valve train continuity was confirmed, and all spark plugs produced a spark at the lead. ## Aircraft - Registration: [N13545](https://openairdocs.org/deregistered/N13545-2013-03-26), registration cancelled 2013-03-26, S/N 212170, built 1983 (OpenAirDocs) - Reported make and model: Loomis SIDEWINDER - Registry model: [Trident SMYTH SIDEWINDER](https://openairdocs.org/model/trident-smyth-sidewinder) (registry code 0564970) (OpenAirDocs) - Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 210270 - Airframe hours: 270 - Engines: Lycoming O-290G 125 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Jeffrey D. Loomis - Airworthiness certificate: Special, Experimental (Special) - Last inspection: Annual, July 6, 1999, 40 hours before - Departed: LUK - Destination: FFT, FRANKFORT, KY - Airport: LUK, Lunken Airport, runway 21L, 6,101 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 37; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 128 total, 124 in this make and model, 105 as pilot in command, 7 in the last 90 days, 3 in the last 30 days, 1 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 20° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 75 °F, dew point 55 °F - Altimeter: 30.00 inHg - Observed at: LUK ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20000415037089A](https://openairdocs.org/incident/20000415037089A), Apr 15, 2000: Amtr SIDEWINDER, Cincinnati, OH, No damage. (-23) On April 15, 2000, at 1410 EDT, a Sidewinder homebuilt airplane, N13545, registered to [privacy data omitted] lost power during takeoff and crashed at… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.