Friday, March 12, 2021

Loss of Control on Ground: Aeronca 7AC Champion, N83032; accident occurred March 11, 2020 at Ankeny Regional Airport (KIKV), Polk County, Iowa

Aviation Accident Final Report - National Transportation Safety Board

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Des Moines, Iowa

Investigation Docket - National Transportation Safety Board:

Vintage Flying Club

Location: Ankeny, Iowa 
Accident Number: CEN20CA120
Date & Time: March 11, 2020, 16:45 Local 
Registration: N83032
Aircraft: Aeronca 7AC 
Aircraft Damage: Substantial
Defining Event: Loss of control on ground
Injuries: 1 Serious, 1 None
Flight Conducted Under: Part 91: General aviation - Personal


The pilot reported that he attempted to hand prop the engine numerous times without success. He returned to the cockpit and turned the magneto switch to the "off" position and advanced the throttle to between 1/2 and 3/4 travel. He then exited the cockpit and turned the propeller backward five to six "blades" to clear the cylinders. The pilot again returned to the cockpit and turned the magneto switch back to the "on" position, but he did not retard the throttle back to idle. He attempted to hand prop the engine again, and it started. Due to the engine's throttle setting, the airplane moved forward over the wheel chocks and struck the pilot, which resulted in serious injuries, and then a hangar, which resulted in substantial damage to the firewall and fuselage.

Probable Cause and Findings

The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The pilot's improper starting procedure, which allowed the airplane to move forward over the wheel chocks and impact him and a hangar when he subsequently hand propped the engine.


Personnel issues Use of equip/system - Pilot
Environmental issues Person - Effect on operation
Environmental issues Airport structure - Effect on operation

Factual Information

History of Flight

Standing-engine(s) start-up Loss of control on ground (Defining event)
Standing-engine(s) operating Collision with terr/obj (non-CFIT)

Pilot Information

Certificate: Private 
Age: 65, Male
Airplane Rating(s): Single-engine land
Seat Occupied: None
Other Aircraft Rating(s): None 
Restraint Used:
Instrument Rating(s): None
Second Pilot Present: No
Instructor Rating(s): None
Toxicology Performed: No
Medical Certification: Unknown 
Last FAA Medical Exam:
Occupational Pilot: No 
Last Flight Review or Equivalent:
Flight Time:

Aircraft and Owner/Operator Information

Aircraft Make: Aeronca 
Registration: N83032
Model/Series: 7AC No Series
Aircraft Category: Airplane
Year of Manufacture: 1956
Amateur Built: No
Airworthiness Certificate: Normal 
Serial Number: 7AC-1688
Landing Gear Type: Tailwheel 
Seats: 2
Date/Type of Last Inspection: 
Certified Max Gross Wt.:
Time Since Last Inspection: 
Airframe Total Time: 
Engine Manufacturer:
Engine Model/Series:
Registered Owner: 
Rated Power:
Operating Certificate(s) Held: None

Meteorological Information and Flight Plan

Conditions at Accident Site: Visual (VMC)
Condition of Light: Day
Observation Facility, Elevation: KIKV,910 ft msl 
Distance from Accident Site: 0 Nautical Miles
Observation Time: 16:35 Local
Direction from Accident Site: 155°
Lowest Cloud Condition: Few / 3900 ft AGL
Visibility 10 miles
Lowest Ceiling: Broken / 5000 ft AGL 
Visibility (RVR):
Wind Speed/Gusts: 18 knots / 31 knots
Turbulence Type Forecast/Actual:  /
Wind Direction: 320° 
Turbulence Severity Forecast/Actual:  /
Altimeter Setting: 29.82 inches Hg
Temperature/Dew Point: 11°C / 3°C
Precipitation and Obscuration: No Obscuration; No Precipitation
Departure Point: 
Type of Flight Plan Filed: None
Type of Clearance: None
Departure Time:
Type of Airspace:

Airport Information

Runway Surface Type:
Airport Elevation: 909 ft msl 
Runway Surface Condition:
Runway Used: 
IFR Approach: None
Runway Length/Width:
VFR Approach/Landing: None

Wreckage and Impact Information

Crew Injuries: 
Aircraft Damage: Substantial
Passenger Injuries: 1 None 
Aircraft Fire: None
Ground Injuries: 1 Serious
Aircraft Explosion: None
Total Injuries: 1 Serious, 1 None
Latitude, Longitude: 41.695278,-93.568611(est)

1 comment:

  1. Lucky pilot to go home after overnight observation in the hospital following prop strike.