# NTSB SEA06LA130: Aeronca 7AC, N243K, Snohomish, WA, June 28, 2006 - Type: NTSB accident investigation - Classification: Accident · Serious injuries · Limited investigation · Final report - Date: June 28, 2006, 11:44 local (18:44 UTC) - Place: Snohomish, WA - Coordinates: 47.900554, -122.096389 - Nearby events: https://openairdocs.org/map.md?lat=47.9006&lon=-122.0964&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: Serious injuries - Injuries: 1 serious - Status: Completed, report December 28, 2006 - Report: Approved by Office Director - Parties: Federal Aviation Administration - NTSB case key (mKey): 64084 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA06LA130 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/64084/pdf - Page: https://openairdocs.org/ntsb/SEA06LA130 ## Probable cause The loss of engine power for undertermined reasons. Conditions for carburetor icing were present at the time of the accident. Factors included the fence and the berm. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(total) - nonmechanical, takeoff - initial climb - reason for occurrence undetermined (cause) - weather condition - carburetor icing conditions (contributing factor) - Forced landing, emergency descent/landing - In flight collision with object, emergency landing - object - fence (contributing factor) - terrain condition - berm - Nose over, landing - roll ## Analysis After taking off and approximately 400 feet above the ground, the airplane experienced a total loss of engine power. An emergency landing was attempted, which resulted in the airplane overruning the end of the runway, impacting a fence and a berm, and nosing over. Meteorological conditions at the time were conducive for carburetor icing. No mechanical malfunctions were reported by the pilot, and an examination of the airplane and engine by representatives from the NTSB and the FAA failed to reveal any anomalies which would have precluded normal operations. ## Factual narrative On June 28, 2006, approximately 1144 Pacific daylight time, an Aeronca 7AC airplane, N243K, was substantially damaged during a forced landing near Snohomish, Washington. The airplane was registered to and operated by a private individual. The certificated airline transport pilot, sole occupant of the airplane, was seriously injured. Visual meteorological conditions prevailed for the personal flight, which was conducted in accordance with 14 CFR Part 91, and a flight plan was not filed. The airplane had departed Harvey Field, Snohomish, Washington, approximately 15 minutes prior to the accident. According to the Pilot/Operator Aircraft Accident/Incident Report (NTSB Form 6120.1/2), and in telephone conversations with the NTSB investigator-in-charge (IIC), the pilot reported that he had completed one takeoff and landing on Runway 32R, which was uneventful. The pilot stated that on the second takeoff, while climbing through approximately 400 feet above the ground, the airplane experienced a total loss of engine power. The pilot reported that he then initiated a 180-degree turn to the left in an attempt to land on Runway 14R. The pilot further reported that after touching down on the turf runway with a tailwind and about 300 feet from the end of the runway, he observed that there wasn't enough runway to stop and the braking was not sufficient. The pilot stated that the airplane went through a fence bordering the runway on the south before crossing the airport perimeter road and impacting a berm, which resulted in the airplane nosing over and coming to rest inverted. In a report filed with a local law enforcement agency, a witness stated that while at the airport watching airplanes taking off she noticed the accident airplane taking off and then heard the engine "sputter quite loudly." The witness reported she then lost sight of the airplane and did not see it physically land or crash. On July 10, 2006, the IIC and a Federal Aviation Administration airworthiness inspector performed a detailed examination of the wreckage. The examination of the engine and airplane failed to reveal any anomalies which would have precluded normal operations. At 1153, the weather reporting station at Paine Field, Everett, Washington, located approximately 7 nautical miles west of the accident site, reported wind calm, visibility 10 statute miles, sky clear, temperature 17 degrees C, dew point 10 degrees C, and an altimeter setting of 30.11 inches of Mercury. According to the Carburetor Icing Probability chart, the temperature and dew point spread indicated moderate icing was possible at cruise power or serious icing at descent power. No mechanical malfunctions were reported by the pilot. ## Aircraft - Registration: [N243K](https://openairdocs.org/aircraft/N243K), registered now, S/N 7AC 2710, built 1946 (OpenAirDocs) - Reported make and model: Aeronca 7AC - Registry model: [Aeronca 7AC](https://openairdocs.org/model/aeronca-7ac) (registry code 2110102) (OpenAirDocs) - Registry engine: [Lycoming 0-235 series](https://openairdocs.org/engine/lycoming-0-235-series) (registry code 41505, 4 cycle) (OpenAirDocs) - Category: Airplane - Serial number: 7AC2710 - Airframe hours: 1974.8 - Engines: Lycoming O-235-C 100 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Louis E. Opstad - Airworthiness certificate: Standard, Normal - Last inspection: Condition, June 1, 2005, 27.8 hours before - Departed: S43, Snohomish, WA - Airport: S43, Harvey Field, runway 32, 2,671 × 36 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 80; injuries: serious; airline transport, flight instructor; airplane ratings: single-engine sea, single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3; last flight review June 1, 2006; seat: front; flight hours: 3,109 total, 90 in this make and model, 2,902 as pilot in command, 9 in the last 90 days, 2 in the last 30 days ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 63 °F, dew point 50 °F - Altimeter: 30.11 inHg - Observed at: PAE, 7 nm away ## 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 20060628013419A](https://openairdocs.org/incident/20060628013419A), Jun 28, 2006: Bbavia 7AC, Snohomish, WA, Substantial damage. (-23) During takeoff from Harvey field, rwy 32, the engine began to run rough just after lift off. The pilot executed a left turn and flew parallel to the… 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.