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Atlas / NTSB / CEN21LA127

NTSB CAROL · Event

Event CEN21LA127

2021-02-12 Prairie du Sac, Wisconsin, United States Airport · 91C None 1 aircraft Status: Completed

Registry · N3477E

FAA Aircraft Registry record.

Make / Model

CESSNA 172N

Year of manufacture

1978 · 43 years old at event

Engine

LYCOMING 0-320 SERIES (180 hp)

Seats / Engines

4 seats · 1 engine

Last airworthiness date

19780926

ADS-B equipped

Yes — Mode-S A3DAA1

Registrant of record

MOREY AIRPLANE CO INC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

The student pilot’s loss of directional control during takeoff, which resulted in the collision with a snowbank. Contributing to the accident was the compacted snow conditions on the runway surface.

Factual narrative

During the takeoff roll, the airplane encountered compacted snow on the runway surface, and the airplane slid to the left. The pilot, a solo student, reduced the engine throttle and applied right rudder; however, the airplane continued to the left. The left main landing gear hit a snowbank on the side of the runway, the airplane spun, and the right wing hit the snowbank. The airplane sustained substantial damage to the right wing. A Notice to Airman for the airport reported the field conditions as 100% compacted snow with the conditions not monitored. The pilot stated that there were no mechanical anomalies with the airplane that would have precluded normal operations. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

Hierarchical cause / factor breakdown from the FAA bulk avdata database. Each finding tagged C (Cause) or F (Factor).

  • Personnel issues-Task performance-Use of equip/info-Aircraft control-Student/instructed pilot
  • Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained
  • Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-Snow/slush/ice covered surface-Contributed to outcome

Verbatim from NTSB's published report. Source file NTSB_2021_CEN21LA127.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.