ANC93LA132

NTSB accident investigation · Cessna 180 · Sparrevohn, AK · August 1, 1993

Accident · No injuriesLimited investigationFinal report
Date
July 31, 1993, 18:05 local (Aug 1, 1993, 02:05 UTC)
Place
Sparrevohn, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N3680CCessna 180
Weather
Visual (VMC) · Day
Status
Completed · report June 30, 1994
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19930731027709A
Case key
2392

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 airplane. A factor was the animal on the runway.

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 - flare/touchdown
Object - animal(s)Factor
Directional control - not maintainedPilot in commandCause
On ground/water encounter with terrain/waterLanding - flare/touchdown
Ground loop/swerve - inadvertentPilot in command

Analysis

Just as the airplane was about to touch down a caribou appeared on the runway, immediately in front of the airplane. The pilot ballooned the airplane over the caribou then touched down on the runway. He then lost directional control and ground looped the airplane, causing the left wing and tail to hit the ground. The pilot had aborted his first approach because of a caribou on the runway.

Factual narrative

On July 31, 1993, at 1805 Alaska daylight time, a wheel equipped Cessna 180 airplane, N3680C, lost control and dragged a wing while landing at Sparrevohn Long Range Radar Station (LRRS), Alaska. The commercial pilot and one passenger, his 19 year old son, were not injured, and the airplane sustained substantial damage. The personal flight, operating under 14 CFR Part 91, departed Six Mile Lake, Elmendorf Air Force Base, Alaska, at 1607. Visual meteorological conditions existed, and a VFR flight plan was filed.

Following the accident, during a telephone interview, the pilot stated the following in part: "I aborted my first approach and made a go around because a bull caribou suddenly showed up in my intended touchdown area. A resident at Sparrevohn came out with a vehicle and chased the caribou away. All appeared well for the second approach until just before I was to touch down, a caribou darted in front of me from the right side. The airplane ballooned over the caribou then touched down on the runway. I then lost directional control and the airplane ground looped, causing the left wing, elevator and horizontal stabilizer to hit the ground. I had seen several caribou near the runway during the approach, but did not see this one until I almost hit it. I was landing up hill with an 8 knot tailwind. The gravel runway was dry and smooth at the time."

Aircraft

Registration
N3680C
Reported as
Cessna 180
Category
Airplane
Serial number
31179
Airframe hours
4,114
Engine
Continental O-470-A, 225 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Kieling, Harry J. Jr.
Registered owner
Kieling, Harry J. Jr.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 3, 1993 · 8 hours before
Departed
EDF · Elmendorf Afb, AK
Flight plan
VFR
Airport
SVW · Sparrevohn Lrrs, runway 34, 4,100 × 150 ft, gravel

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
49
Certificates
Commercial, Flight instructor, Military
Airplane ratings
Single-engine sea, Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
3,748 total · 76 in this make and model · 3,476 as pilot in command · 13 in the last 90 days · 7 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 12 knots, gusting 21
Visibility
10 statute miles
Lowest ceiling
3,800 ft broken
Temperature
63 °F, dew point 57 °F
Altimeter
30.00 inHg
Observed at
SVW, 1 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.

Other investigations on N3680C · 2

Matched to the same aircraft by N-number and date.