GAA18CA317

NTSB accident investigation · Aeronca 7AC · Vinton, IA · May 28, 2018

Accident · No injuriesData collectionFinal report
Date
May 28, 2018, 15:06 local (20:06 UTC)
Place
Vinton, IA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N84163Aeronca 7AC
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report November 5, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180528006259A
Case key
97386

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

On this page

Probable cause

The pilot’s failure to maintain directional control while landing in gusting tailwind conditions.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAeronca 7AC: 26 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAeronca 7AC: 43 casesAll aircraft: 9,295 casesProbable cause
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationAeronca 7AC: 1 caseAll aircraft: 594 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationAeronca 7AC: 7 casesAll aircraft: 1,199 cases

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

The pilot reported that, after overflying the airport to determine the wind direction, she landed in variable crosswind conditions. During touchdown "at or near stall speed," the tailwheel-equipped airplane encountered a wind gust. She added that the airplane veered left and that she attempted to correct with immediate application of right rudder and right brake. Subsequently, the airplane exited the left side of the runway into the grass, and the right wingtip struck the ground. She added that she was able to taxi the airplane to park. The airplane sustained substantial damage to the right wing, right wing spar, and right wing lift strut. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system located at the accident airport reported that, about the time of the accident, the wind was from 140° at 11 knots, gusting to 18 knots. The pilot landed on runway 34.

Factual narrative

After overflying the airport to determine the wind direction, the pilot reported that, she landed in variable crosswind conditions, during touchdown "at or near stall speed", the tailwheel-equipped airplane encountered a gust of wind. She added, the airplane veered left and she attempted to correct with immediate application of right rudder and right brake. Subsequently, the airplane exited the left side of the runway into the grass and the right wingtip struck the ground. She added that she was able to taxi the airplane to park. The airplane sustained substantial damage to the right wing, right wing spar, and right wing lift strut. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. The automated weather observation system located at the accident airport reported that, about the time of the accident, the wind was from 140° at 11 knots, gusting to 18 knots. The pilot landed on runway 34.

Aircraft

Registration
N84163
Reported as
Aeronca 7AC
Category
Airplane
Serial number
7AC-2849
Built
1946
Airframe hours
988
Engine
Continental A65-8, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · February 3, 2018
Departed
GGI · Grinnell, IA
Destination
VTI · Vinton, IA
Airport
VTI · Vinton Veterans Memorial Arpk, runway 34, 2,500 × 50 ft, asphalt
Equipment
None

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
18
Injuries
None
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Medical
Sport pilot, Unknown
Last flight review
July 12, 2017
Seat
Front
Restraint
Lap only
Flight hours
86.3 total · 19.7 in this make and model · 40.9 as pilot in command · 9.6 in the last 30 days · 1.5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 11 knots, gusting 18
Visibility
10 statute miles
Lowest ceiling
None
Temperature
97 °F, dew point 63 °F
Altimeter
29.89 inHg
Observed at
KVTI

Docket · 2

The files NTSB released with the investigation on September 6, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.3 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.