CEN22LA114

NTSB accident investigation · Aeronca 7AC · Cook, MN · January 29, 2022

Accident · No injuriesClass 4 · LimitedFinal report
Date
January 29, 2022, 13:00 local (19:00 UTC)
Place
Cook, MN
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N2923EAeronca 7AC
Defining event
Takeoff: Miscellaneous/other
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Central Region
Parties
Federal Aviation Administration
FAA report
20220129001069A
Case key
104594

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 ensure the snow-covered takeoff area was safe, which resulted in a collision with ice and subsequent landing gear damage.

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.

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 he taxied the ski-equipped airplane to a snow-covered area adjacent to the runway. He made two passes over 8 inches of fresh snow to create a makeshift runway. He then added engine power and started to take off toward the west. At rotation speed he heard and felt a “whack” along with a “bump,” and deceleration. The airplane felt “mushy” as it became airborne, and the pilot leveled the nose to maintain control. The pilot observed the right ski hanging straight down; with the airplane approaching trees, he pushed the nose down and landed in the remaining open area. The airplane slid about 20 ft before it came to rest; its lower fuselage structure sustained substantial damage. The pilot reported that there were no mechanical failures or malfunctions that would have precluded normal operations. After the accident occurred, the pilot noted that the fresh snow obscured various ice chunks and frozen drifts.

Aircraft

Registration
N2923E
Reported as
Aeronca 7AC (Champion)
Category
Airplane
Serial number
7AC-6506
Built
1946
Engine
Continental Motors A&C 65 SERIES, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Departed
CQM · Cook, MN
Airport
CQM · Cook Municipal Airport, runway 31, 4,000 × 75 ft, snow
Equipment
Unknown

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
34
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
June 30, 2021
Seat
Front
Restraint
Lap only
Flight hours
1 total · 1 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
210° at 5 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
19 °F, dew point 10 °F
Altimeter
29.75 inHg
Observed at
CQM

Docket · 3

The files NTSB released with the investigation on June 22, 2022, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.2 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.