GAA17CA043

NTSB accident investigation · Aeronca 11AC · Winter Haven, FL · October 22, 2016

Accident · No injuriesData collectionFinal report
Date
October 22, 2016, 08:42 local (12:42 UTC)
Place
Winter Haven, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N9410EAeronca 11AC
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report January 18, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20161022016909A
Case key
94276

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

The pilot's failure to maintain directional control during the landing roll in gusty crosswind conditions, which resulted in a runway excursion.

Findings · 5

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 11AC: 13 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAeronca 11AC: 14 casesAll aircraft: 9,295 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Ability to respond/compensateAeronca 11AC: 2 casesAll aircraft: 1,008 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Ability to respond/compensateAeronca 11AC: 2 casesAll aircraft: 1,199 cases
Object/animal/substance: sign/markerEnvironmental issues › Physical environment · Contributed to outcomeAeronca 11AC: 2 casesAll aircraft: 214 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 of a tailwheel-equipped airplane reported that during the landing roll in crosswind conditions, the airplane encountered a wind gust, the tail swung to the right, and the airplane veered off the runway to the left. During the runway excursion, the right main landing gear impacted an airport sign and collapsed. The right wing lift strut sustained substantial damage. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The automated weather observing system at the airport near the time of the accident reported the wind direction at 330 degrees true at 7 knots. The pilot reported that he landed on runway 5.

Factual narrative

The pilot of a tailwheel-equipped airplane reported that during the landing roll in crosswind conditions, the airplane encountered a wind gust, the tail swung to the right, and the airplane veered off the runway to the left. During the runway excursion, the right main landing gear impacted an airport sign and collapsed. The right wing lift strut sustained substantial damage. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The automated weather observing system at the airport near the time of the accident reported the wind direction at 330 degrees true at 7 knots. The pilot reported that he landed on runway 5.

Aircraft

Registration
N9410E
Reported as
Aeronca 11AC (NO SERIES)
Category
Airplane
Serial number
11AC-1047
Built
1946
Airframe hours
944
Engine
Cont Motor A-65, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Special light-sport (Special)
Last inspection
Annual · December 7, 2015
Departed
GIF · Winter Haven, FL
Destination
GIF · Winter Haven, FL
Airport
GIF · Winter Haven'S Gilbert, runway 05, 5,006 × 100 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
68
Injuries
None
Certificate
Sport Pilot
Airplane ratings
Single-engine land
Medical
Sport pilot
Last flight review
November 16, 2014
Seat
Left
Flight hours
181 total · 72 in this make and model · 81 as pilot in command · 5 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
330° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
61 °F, dew point 46 °F
Altimeter
30.03 inHg
Observed at
KGIF

Docket · 2

The files NTSB released with the investigation on December 15, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 349 KB 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.