ERA22LA382

NTSB accident investigation · Aeronca 7AC · Clermont, FL · August 21, 2022

Accident · No injuriesClass 3 · LimitedFinal report
Date
August 21, 2022, 14:00 local (18:00 UTC)
Place
Clermont, FL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N44FCAeronca 7AC
Defining event
Landing-landing roll: Sys/Comp malf/fail (non-power)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Eastern Region Aviation
Parties
FAA/FSDO
FAA report
20220821014919A
Case key
105784

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 inability to maintain directional control while landing due to a worn tailwheel locking mechanism, which resulted in a runway excursion and collision with terrain.

Findings · 3

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotAeronca 7AC: 43 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedAeronca 7AC: 26 casesAll aircraft: 3,958 casesProbable cause
Landing gear system: nose/tail landing gearAircraft › Aircraft systems · Fatigue/wear/corrosionAeronca 7AC: 2 casesAll aircraft: 185 casesProbable cause

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 while landing the vintage tailwheel airplane on a turf airstrip, the airplane veered left when the tailwheel touched down. The airplane traveled off the runway and the right wing struck a tree, resulting in substantial damage to the right wing. Postaccident examination of the tailwheel revealed that the locking mechanism was worn, which likely resulted in the tailwheel not being appropriately aligned with the rudder position during the landing.

Factual narrative

On August 21, 2022, about 1400 eastern daylight time, an Aeronca 7AC, N44FC, was substantially damaged when it was involved in an accident near Clermont, Florida. The commercial pilot was not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that while landing at the Seminole Lake Gliderport on runway 18, the airplane veered left off the runway when the tailwheel touched down and the right wing struck a tree, resulting in substantial damage to the right wing. The pilot added that the internal tailwheel centering lock spring may have been fractured or disconnected. A mechanic who examined the airplane stated that he was very familiar with the make and model tailwheel as he had over 8,000 hours of flight experience in tailwheel airplanes and has had inspection authorization for over 50 years. He further stated that the make and model tailwheel locking mechanism tend to wear after 500 to 700 hours. After it is worn, although the tailwheel is supposed to follow the rudder, the tailwheel may stay deflected to one side after the rudder is returned to neutral. The mechanic examined the accident tailwheel in December 2022. He did not disassemble it further as he could tell it was worn from external examination and had seen the issue several times in the past. The mechanic added that after he replaced the old Maule tailwheel with a new API tailwheel, the pilot noticed a significant improvement in the ground steering of the airplane.

Aircraft

Registration
N44FC
Reported as
Aeronca 7AC
Category
Airplane
Serial number
7AC-2005
Built
1946
Airframe hours
4,772
Engine
Continental C65, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · August 8, 2022 · 8 hours before
Departed
OBE · Okeechobee, FL
Destination
Same as departure
Airport
6FL0 · Seminole Lake Gliderport, runway 18, 3,000 × 200 ft, grass/turf
Equipment
Handheld GPS, Electronic flight bag or handheld device

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
66
Injuries
None
Certificates
Commercial, Private
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
June 19, 2022
Seat
Front
Flight hours
610 total · 82 in this make and model · 566 as pilot in command · 18 in the last 90 days · 16 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
4,900 ft broken
Temperature
91 °F, dew point 73 °F
Altimeter
30.10 inHg
Observed at
KZPH, 20 nm away
METAR
KZPH 211755Z AUTO 00000KT 10SM BKN049 BKN060 33/23 A3010

Docket · 5

The files NTSB released with the investigation on January 30, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.8 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.