# NTSB CHI95LA282: Aeronca 7AC, N83564, Mount Vernon, MO, August 16, 1995 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: August 16, 1995, 13:55 local (18:55 UTC) - Place: Mount Vernon, MO - Coordinates: 37.100303, -93.810699 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=37.1003&lon=-93.8107&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report November 11, 1996 - Report: Approved by Office Director - NTSB case key (mKey): 9999 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI95LA282 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9999/pdf - Page: https://openairdocs.org/ntsb/CHI95LA282 ## Probable cause loss of aircraft control for an undetermined reason. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of control - on ground/water, landing - roll - reason for occurrence undetermined (cause) - landing gear,tailwheel - slipped - directional control - not maintained - ground loop/swerve - uncontrolled ## Analysis A student and instructor pilot (CFI) were landing on runway 18 in wind that was from 180 degrees at 10 knots. The airplane ground looped during the landing, while the student pilot was operating the controls. An examination of the airplane after the accident revealed the tailwheel had slipped off its rim. The flight instructor believed that this was the initiating event for the ground loop. However, an inspection of the airplane did not reveal whether this was an initiating event or a result of the ground loop. ## Factual narrative On August 16, 1995, at 1355 central daylight time, an Aeronca 7AC, N83564, ground looped while landing on runway 18 at the Mount Vernon Municipal Airport, Mount Vernon, Missouri. The 14 CFR Part 91 instructional flight was operating in visual meteorological conditions without a flight plan. The certificated flight instructor (CFI) and the student pilot were not injured. The airplane was substantially damaged. The flight originated from Bolivar, Missouri, at 1255 cdt. The CFI stated the tailwheel spun off the wheel rim and lodged itself below the tailwheel hardware. On touchdown the airplane ground looped. According to the Federal Aviation Administration Inspectors who inspected the airplane after the accident, the tailwheel tire was slipped off the rim. However, it was not possible to determine if this was an initiating event of the ground loop or as a result of the ground loop. ## Aircraft - Registration: [N83564](https://openairdocs.org/aircraft/N83564), registered now, S/N 7AC2235 (OpenAirDocs) - Reported make and model: AERONCA 7AC - Registry model: [Aeronca 7AC](https://openairdocs.org/model/aeronca-7ac) (registry code 2110102) (OpenAirDocs) - Category: Airplane - Serial number: 7AC2235 - Airframe hours: 2458 - Engines: Continental A-65 65 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Bolivar Flyers - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 14, 1995, 87 hours before - Departed: H29, BOLIVAR, MO - Destination: MO20 - Airport: MO20, Mount Vernon Muni, runway 18, 3,000 × 75 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 50; airline transport, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: rear; flight hours: 21,786 total, 1,020 in this make and model, 21,175 as pilot in command, 175 in the last 90 days, 85 in the last 30 days, 5 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 180° at 10 knots - Visibility: 10 statute miles - Lowest ceiling: 4,500 ft broken - Temperature: 84 °F ## 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 19950816046839A](https://openairdocs.org/incident/19950816046839A), Aug 16, 1995: Bbavia 7AC, Mount Vernon, MO, Substantial damage. Ground looped on landing. CFI unable to stop loop. Blamed tailwheel tire off rim. Unable say before or after event. ## Other investigations on N83564 (1) 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. - [NTSB CHI00LA280](https://openairdocs.org/ntsb/CHI00LA280), Aug 27, 2000: Aeronca 7AC (N83564), Bolivar, MO, substantial damage. Probable cause: The pilot failed to maintain directional control of the airplane on landing. A factor associated with the accident was the crosswind. 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.