WPR20CA071
2020-01-20 · Sun River, Oregon, United States · None · 1 aircraft · Status: Completed
Airport S21
Current FAA registration · N73707
- Make / Model
- CESSNA 172N
- Year of manufacture
- 1976 · 44 years old at event
- Engine
- LYCOMING 0-320 SERIES (180 hp)
- Seats / Engines
- 4 seats · 1 engine
- Last airworthiness date
- 19760830
- ADS-B equipped
- Yes — Mode-S A9E784
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to maintain directional control during the landing roll on a runway with icy patches, which resulted in impact with a snowbank and a subsequent nose-over.
Factual narrative
The pilot reported that after an uneventful cross-country flight, the airplane landed smoothly onto the runway and started to veer left. The pilot added right rudder and despite his actions the airplane continued to veer left. He aborted the landing by applying full engine power, continued to apply the right rudder, but the airplane collided with a snowbank on the left side of the runway and nosed over. The pilot reported that the runway was coated in icy patches. The airplane sustained substantial damage to the wings and vertical stabilizer. The pilot reported that there were no mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that, after an uneventful cross-country flight, the airplane landed smoothly on the runway and started to veer left. The pilot added right rudder, but the airplane continued to veer left. He aborted the landing by applying full engine power and continued to apply right rudder, but the airplane exited the left side of the runway, impacted a snowbank, and nosed over. The pilot reported that the runway was coated in icy patches. The airplane sustained substantial damage to the wings and vertical stabilizer. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
- C Environmental issues-Physical environment-Runway/land/takeoff/taxi surface-Snow/slush/ice covered surface-Effect on operation - C
- C Environmental issues-Physical environment-Object/animal/substance-Snow/ice-Effect on operation - C
Verbatim from NTSB's published report. Source file
NTSB_2020_WPR20CA071.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
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Related research
Matched on aircraft type. All research papers
- NASA NTRS 2023 · Reprint (Version printed in journal) Finite Element Simulation of Three Full-Scale Crash Tests for Cessna 172 Aircraft
The NASA Emergency Locator Transmitter Survivability and Reliability project was initiated in 2013 to assess the crash performance standards for the next generation of emergency locator transmitter (E…
- NASA NTRS 2019 · Conference Paper Crash Testing and Simulation of a Cessna 172 Aircraft: Pitch Down Impact Onto Soft Soil
During the summer of 2015, NASA Langley Research Center conducted three full-scale crash tests of Cessna 172 (C-172) aircraft at the NASA Langley Landing and Impact Research (LandIR) Facility.
- NASA NTRS 2019 · Technical Memorandum (TM) Simulating the Impact Response of Three Full-Scale Crash Tests of Cessna 172 Aircraft
During the summer of 2015, a series of three full-scale crash tests were performed at the Landing and Impact Research Facility located at NASA Langley Research Center of Cessna 172 aircraft.
- Embry-Riddle Scholarly Commons 2023 · Conference paper Validation of Training Satisfaction Survey
The Training Satisfaction Survey (TSS) was developed as part of a larger project to examine the features of Virtual Reality software and supporting devices as a training program on visual illusions an…
- Semantic Scholar 2021 · Article (Data in Brief) Cockpit voice recorder transcript data: Capturing safety voice and safety listening during historic aviation accidents
Cockpit Voice Recorder (CVR) transcripts capture audio data within cockpit environments. This aids the investigation of causal factors contributing to aviation accidents by revealing communication and…
- Semantic Scholar 2021 · Article (Safety Science) Safety voice and safety listening during aviation accidents: Cockpit voice recordings reveal that speaking-up to power is not enough
Abstract Safety voice is theorised as an important factor for mitigating accidents, but behavioural research during actual hazards has been scant.