DEN99LA080

NTSB accident investigation · Artic S-1B2 · Lamar, CO · May 20, 1999

Accident · No injuriesLimited investigationFinal report
Date
May 20, 1999, 08:15 local (14:15 UTC)
Place
Lamar, CO
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N70ATArtic S-1B2
Weather
Visual (VMC) · Day
Status
Completed · report October 13, 2000
Report
Approved by Office Director
FAA report
19990520043979A
Case key
46337

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's failure to maintain directional control during initial climb following takeoff. A factor was the pilot's lack of experience in the type of aircraft, and the fence.

Analysis

The pilot was departing Lamar, Colorado, with an intended destination of Rock Springs, Wyoming. During initial climb takeoff, the pilot lost directional control and the aircraft collided with a fence off the end of the runway. Following the accident, the pilot reported to an FAA inspector that the left tire brace strut failed, creating an asymmetrical condition, and that he then made a forced landing. However, according to a mechanic at the airport, the right brace strut and landing gear had separated from the aircraft, not the left. It was also his opinion that the damage sustained to the right landing gear and brace strut was due to impact forces sustained during the collision with the fence. At the time of the accident, the pilot had accumulated a total of one hour of flight time in make and model. According to the FAA, the pilot had a past medical history of neuroses and several drug and alcohol related offenses. The last record of the pilot being issued a valid second class airman's medical certificate was on May 13, 1991. All attempts to contact the pilot were unsuccessful.

Factual narrative

The factual narrative590 words

On May 20, 1999, approximately 0815 mountain daylight time, an Arctic S-1B2, N70AT, was substantially damaged when it collided with a fence during initial climb following takeoff from Lamar Municipal Airport, Lamar, Colorado. The private pilot, sole occupant aboard, was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the personal cross-country flight being conducted under Title 14 CFR Part 91. The flight originated minutes before the accident, with an intended destination of Rock Springs, Wyoming.

According to a mechanic employed at Lamar airport, the owner of the aircraft told him that the pilot picked up the airplane in Boise City, Oklahoma, and flew to Lamar. He was also told by the owner that that was the pilot's first time flying that make and model of aircraft. During landing at Lamar, the aircraft encountered a crosswind and tipped onto its nose. The mechanic inspected the aircraft, and determined that it had sustained only minor damage. Subsequent to the inspection the following day, the pilot departed the airport en route to Rock Springs, Wyoming. During initial climb after takeoff, the pilot lost directional control after becoming airborne. The aircraft collided with a fence off the end of the runway. During the impact sequence, the right landing gear was separated from the aircraft and the leading edges of the wings and wing spar were bent. Wind conditions near the time of his departure were reported as calm.

Following the accident, the pilot reported to a Federal Aviation Administration (FAA) inspector that the left tire brace strut failed. He stated that the brace swung outward, creating an asymmetrical condition. As a result, he made a forced landing in a field. However, according to the same mechanic who performed the previous inspection following the first incident, the right brace strut and landing gear had separated, not the left. It was also his opinion that the damage sustained to the right landing gear and brace strut was due to impact forces sustained during the collision with the fence.

According to the Civil Aeromedical Institute's (CAMI) Aeromedical Certification Division of the FAA, the pilot has a past medical history of neuroses, including anxiety, hysteria, phobia, obsessive compulsive, and depressive disorders. In addition, he has had four drug and alcohol related offenses. According to the FAA inspector, once the pilot's medical history was discovered the day following the accident, it was too late to perform a toxicological protocol on the pilot.

According to CAMI's records, the last record of the pilot being issued a valid second class airman's medical certificate was on May 13, 1991, which was issued without restrictions or limitations. On July 23, 1993, the pilot applied for a second class medical certificate, which was denied by the Aviation Medical Examiner (AME) due to an unapproved medication the pilot was taking. On July 29, 1994, August 21, 1996, and November 30, 1998, second class medical certificates were issued by an AME, but were later denied by the FAA due to the pilot's failure to provide requested information. The pilot did surrender the 1996 medical certificate, but not the other two.

The NTSB attempted to contact the pilot on three separate occasions requesting the completion of NTSB Form 6120.12, the Pilot/Operator Aircraft Accident Report; on May 24, 1999, June 25, 1999, and August 25, 1999. The pilot signed for the second letter sent via certified mail on July 02, 1999. The third letter was also sent certified mail by the NTSB's Office of General Counsel, and the letter was returned as "unclaimed."

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 - in flightTakeoff - initial climb
Directional control - not maintainedPilot in commandCause
Lack of total experience in type of aircraftPilot in commandFactor
In flight collision with objectDescent - uncontrolled
Object - fenceFactor

Aircraft

Registration
N70AT
Reported as
Artic S-1B2
Category
Airplane
Serial number
1021
Engine
Lycoming O-320, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Charles T. Mallard
Registered owner
Stanley J. Kindblade
Airworthiness certificate
Standard, Normal
Departed
LAA · CO
Destination
RKS · Rock Springs, WY
Airport
LAA · Lamar Municipal Airport, runway 8, 5,001 × 60 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
38
Certificate
Private
Airplane ratings
Single-engine land
Medical
Expired
Seat
Front
Flight hours
450 total · 1 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
1,600 ft broken
Temperature
63 °F, dew point 55 °F
Altimeter
29.00 inHg
Observed at
LAA

FAA reports on this event · 1

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