CEN20FA008

NTSB accident investigation · Aeronca 7AC · Green Bay, WI · October 17, 2019

Accident · FatalClass 3 · FieldFinal report
Date
October 17, 2019, 16:50 local (21:50 UTC)
Place
Green Bay, WI
Injuries
2 fatal; on the ground: 1 fatal
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N82308Aeronca 7AC
Defining event
Landing-flare/touchdown: Collision during takeoff/land
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20191017023799A
Case key
100435

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 low final approach path and his failure to see and avoid a truck traveling on a roadway, which resulted in a collision with the truck.

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.

Performance/control parameters: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedAeronca 7AC: 3 casesAll aircraft: 1,310 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 private pilot was on short final approach for landing to the grass runway. The south end of the runway was bordered by an east-west oriented road; witnesses on this road and dashboard camera video from another vehicle confirmed that the airplane was flying about 5 ft above the ground when it collided with the front left side of a westbound truck. The airplane became lodged on top of the truck and they continued off the right side of the road, through a ditch, and came to rest in a residential front yard. The pilot and driver were both fatally injured during the accident sequence. A postaccident examination of the airplane did not reveal any mechanical malfunctions or anomalies that would have precluded normal operation. There were several propeller slash marks on the front left side of the truck, consistent with the propeller rotating during the collision. There was no evidence of tire skid marks on the road and none of the witnesses reported any evasive maneuvers by the airplane; therefore, it is likely that neither the pilot nor the driver was aware of the impending collision. Additionally, there was no roadway signage warning of low-flying aircraft.

Factual narrative

An annual inspection was completed on the airplane earlier on the day of the accident, with no anomalies noted. On October 17, 2019, about 1650 central daylight time, an Aeronca 7AC Champion airplane, N82308, was substantially damaged when it was involved in an accident near Green Bay, Wisconsin. The private pilot and the driver of a vehicle sustained fatal injuries. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot departed WI78 earlier in the morning and arrived at Brennand Airport (79C), Neenah, Wisconsin, to meet with a mechanic to complete the airplane’s annual inspection. The pilot and mechanic ate lunch together and then the pilot departed 79C for WI78. During their conversation, the pilot mentioned to the mechanic that he was concerned about the wet turf runway at WI78 and that he preferred to land near the end of the runway. According to witnesses in vehicles near the accident location and a vehicle dashboard camera, the airplane was flying north less than 5 ft over the county highway adjacent to the end of runway 1. The airplane impacted the front left side of a westbound truck. The airplane remained on top of the truck after the collision and they both continued off the right side of the road into a ditch, then came to rest in a front yard. Figure 1 shows the main wreckage on the left in front of the house, the grass runway on the far right, and the road in the foreground. Figure 1. Accident site Toxicology testing performed at the FAA Forensic Sciences Laboratory detected gabapentin in the blood and urine. All brands of gabapentin are used in adults to treat nerve pain caused by the herpes virus or shingles. The pilot’s most recent Federal Aviation Administration (FAA) medical certificate had expired for all classes on October 31, 2012. The pilot completed the requirements for operation under BasicMed on March 20, 2018. The main wreckage, which comprised the fuselage, wings, and empennage, came to rest on top of the truck, and they both came to rest upright in a front yard. The engine, propeller, engine mount, and cowling were separated from the airplane during the impact sequence and were located in a nearby ditch. The engine assembly came to rest adjacent to a powerline pole. Miscellaneous airplane and truck debris were located on the road and in the ditch on the north side of the road. The airplane’s left and right main landing gear were located in a ditch on the south side of the road. Portions of the airplane windscreen were fragmented and located in the ditch and on the grass runway. The forward fuselage structure was destroyed. The front seat structure remained partially attached to the fuselage, and the front lap belt left attach point was separated from the floor attachment. The lap belt remained latched. No shoulder harnesses were installed. The left and right wings displayed leading edge damage and were bent downward at the fuselage attach points. The empennage and tailsurfaces remained relatively undamaged. Flight control continuity was established from the cockpit controls to all flight control surfaces. The truck’s left front windshield post and upper door post were crushed to the right consistent with impact from the airplane’s main landing gear and lower forward fuselage. Several linear and sequential gashes were observed on the front left side of the truck, consistent with propeller slash marks. The driver’s door was removed by rescue personnel. The roadway surface did not show any evidence of tire skid marks from the truck. A review of the runway surface revealed airplane landing gear tracks from the pilot’s hangar to the departure end of runway 1, consistent with the pilot’s departure earlier that day. The south end of the runway turf condition was soft and wet. The north end of the runway turf condition was dry. A review of the area of the accident site determined that there were no road signs warning drivers of low-flying airplanes over the road.

Aircraft

Registration
N82308
Reported as
Aeronca 7AC (No Series)
Category
Airplane
Serial number
7AC-937
Built
1946
Airframe hours
2,183
Engine
Continental Motors A-75-8F, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Other
Last inspection
Annual · October 17, 2019 · 0 hours before
Departed
79C · Neenah, WI
Destination
WI78 · Green Bay, WI
Airport
WI78 · Martins Aerodrome, runway 01, 2,000 × 100 ft, grass/turf

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
Fatal
Certificate
Private
Airplane ratings
Single-engine land
Medical
BasicMed, With waivers/limitations
Last flight review
November 12, 2017
Seat
Front
Restraint
Lap only
Toxicology
Performed
Flight hours
2,000 total · 1 in the last 90 days · 1 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Temperature
50 °F, dew point 32 °F
Altimeter
30.01 inHg
Observed at
KGRB, 9 nm away

Docket · 11

The files NTSB released with the investigation on October 8, 2021, on NTSB’s docket system: statements, records, photos and specialists’ reports. 12.0 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.