CHI95LA282

NTSB accident investigation · Aeronca 7AC · Mount Vernon, MO · August 16, 1995

Accident · No injuriesLimited investigationFinal report
Date
August 16, 1995, 13:55 local (18:55 UTC)
Place
Mount Vernon, MO
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N83564Aeronca 7AC
Weather
Visual (VMC) · Day
Status
Completed · report November 11, 1996
Report
Approved by Office Director
FAA report
19950816046839A
Case key
9999

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

loss of aircraft control for an undetermined reason.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - on ground/waterLanding - roll
Reason for occurrence undeterminedCause
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
Reported as
Aeronca 7AC
Category
Airplane
Serial number
7AC2235
Airframe hours
2,458
Engine
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

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
50
Certificates
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.

Other investigations on N83564 · 1

Matched to the same aircraft by N-number and date.