WPR20CA071

NTSB accident investigation · Cessna 172 · Sun River, OR · January 20, 2020

Accident · No injuriesData collectionFinal report
Date
January 20, 2020, 12:25 local (19:25 UTC)
Place
Sun River, OR
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N73707Cessna 172
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report June 16, 2020
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
FAA-FSDO
FAA report
20200120021769A
Case key
100844

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 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.

Findings · 4

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 172N: 150 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 172N: 82 casesAll aircraft: 3,958 casesProbable cause
Runway/land/takeoff/taxi surface: snow/slush/ice covered surfaceEnvironmental issues › Physical environment · Effect on operationCessna 172N: 7 casesAll aircraft: 219 casesProbable cause
Object/animal/substance: snow/iceEnvironmental issues › Physical environment · Effect on operationCessna 172N: 4 casesAll aircraft: 67 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 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.

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.

Aircraft

Registration
N73707
Reported as
Cessna 172 (N)
Category
Airplane
Serial number
17267620
Built
1976
Airframe hours
9,712
Engine
Lycoming O-320 SERIES, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Leading Edge Aviation, Inc.
Registered owner
Leading Edge Aviation, Inc.
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
100 hour · January 11, 2020 · 12 hours before
Departed
BDN · Bend, OR
Destination
S21 · Sun River, OR
Flight plan
IFR
Airport
S21 · Sunriver, runway 18, 5,461 × 75 ft, asphalt
Equipment
ADS-B

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
28
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
September 18, 2019
Seat
Left
Restraint
3-point
Flight hours
152 total · 151 in this make and model · 108 as pilot in command · 50 in the last 90 days · 12 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 5 knots
Visibility
10 statute miles
Lowest ceiling
8,000 ft overcast
Temperature
41 °F, dew point 23 °F
Altimeter
29.96 inHg
Observed at
KS21

Docket · 2

The files NTSB released with the investigation on March 10, 2020, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.2 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.