DEN99LA115

NTSB accident investigation · Cessna 170 · Durango, CO · June 22, 1999

Accident · No injuriesLimited investigationFinal report
Date
June 22, 1999, 11:30 local (17:30 UTC)
Place
Durango, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N4163VCessna 170
Weather
Visual (VMC) · Day
Status
Completed · report May 12, 2000
Report
Approved by Office Director
FAA report
19990622044839A
Case key
46722

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's failure to maintain directional control of the aircraft during landing roll. A factor was the high density altitude and the high vegetation (sagebrush).

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - on ground/waterLanding - roll
Directional control - not maintainedPilot in commandCause
Weather condition - high density altitudeFactor
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - high vegetationFactor

Analysis

During the pilot's third landing attempt, the aircraft departed the right side of the runway. The right wheel exited the pavement, and he was unable to return completely back onto the runway. The airplane continued to the right, and the aircraft traveled at a high speed through sagebrush. In attempting to maneuver the aircraft back onto the runway, the airplane skidded sideways towards the west at a 90 degree angle from the runway. The aircraft tilted onto its left side, bounced back, and came to rest in an upright position. During landing, the aircraft's indicated airspeed was 60 knots, and the ground speed was approximately 85 knots. Density altitude at the time of the accident was calculated to be 9,422 feet.

Factual narrative

On June 22, 1999, approximately 1130 mountain daylight time, a Cessna 170, N4163V, registered to and operated by the pilot, was substantially damaged after colliding with terrain during landing roll at Animas Air Park, Durango, Colorado. The private pilot, the sole occupant aboard, was not injured. The aircraft was being operated as a personal cross-country flight under Title 14 CFR Part 91, and no flight plan was filed. The flight originated from Lamar, Colorado, at 0700. Visual meteorological conditions prevailed.

According to the pilot, he approached the airport from the south for landing and listened to Durango-La Plata County Airport's Automated Weather Observing System (AWOS), located 6.3 nautical miles to the southeast. The wind was reported to be light and variable. During his first attempt to land on runway 19, the approach was too high and he performed a go around. During his second landing attempt, he bounced once, and decided to go around again.

His third landing was successful; however upon touching down, the aircraft began to depart the right side of the runway. The right wheel exited the pavement, and he was unable to return completely back onto the runway. The airplane continued to the right, and the aircraft traveled at a high speed through sagebrush. In attempting to maneuver the aircraft back onto the runway, the airplane skidded sideways towards the west at a 90 degree angle from the runway. The aircraft tilted onto its left side with the right wingtip in the air. The left wingtip impacted the ground, bounced back, and the airplane then came to rest in an upright position. During the landing sequence, the aircraft sustained substantial damage to the horizontal stabilizer, elevator, left wing tip, and wing spar extension.

During the third landing attempt, the pilot stated that the aircraft's indicated airspeed was 60 knots, and the ground speed was approximately 85 knots. Density altitude at the time of the accident was calculated to be 9,422 feet.

Aircraft

Registration
N4163V
Reported as
Cessna 170
Category
Airplane
Serial number
18495
Airframe hours
3,300
Engine
Continental O-300-A, 145 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Thomas A. Arsenault
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 26, 1999 · 13 hours before
Departed
LAA · Lamar, CO
Destination
5CO0
Airport
5CO0 · Animas Air Park, runway 19, 5,010 × 50 ft, asphalt

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
59
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
329 total · 228 in this make and model · 329 as pilot in command · 28 in the last 90 days · 14 in the last 30 days · 8 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 43 °F
Altimeter
30.00 inHg
Observed at
CEZ, 37 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.