DEN00LA147

NTSB accident investigation · Fisher Glastar GS-1 · Berthoud, CO · August 10, 2000

Accident · Minor injuriesLimited investigationFinal report
Date
August 10, 2000, 10:30 local (16:30 UTC)
Place
Berthoud, CO
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N99DFFisher Glastar GS-1
Weather
Visual (VMC) · Day
Status
Completed · report March 2, 2001
Report
Approved by Office Director
FAA report
20000810004949A
Case key
49948

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 obstacle clearance during takeoff. A factor was the irrigation equipment.

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.

On ground/water collision with objectTakeoff - roll/run
Compensation for wind conditions - excessivePilot in commandCause
Clearance - not maintainedPilot in commandCause
Object - otherFactor

Analysis

The airplane drifted slightly to the left (north) as the pilot landed to the east, going uphill, on the private airstrip. He noted irrigation equipment on the south side of the airstrip. Takeoff was made to the west going downhill and he noticed 'considerable drift to the right (north).' He lowered the left wing to correct for the drift. As the airplane lifted off, the left wing struck an irrigation buggy wheel, causing the airplane to spin around 180 degrees. The airplane slid backwards, tearing off the tail wheel, and came to a halt under the sprinkler arm. The wind recorded at an airport 13 miles north of the accident site was from the south (160 degrees) at 7 knots with gusts to 14 knots.

Factual narrative

On August 10, 2000, at approximately 1030 mountain daylight time, a Fisher Glastar GS-1, N99DF, owned and operated by the pilot, was substantially damaged when it collided with a pivotal sprinkler system during takeoff from a farm near Berthoud, Colorado. The private pilot received minor injuries. Visual meteorological conditions prevailed, and no flight plan had been filed for the personal flight being operated under Title 14 CFR Part 91. The flight was originating at the time of the accident.

According to the pilot's accident report, the airplane drifted slightly to the left (north) as he landed to the east, going uphill, on the private airstrip. He noted irrigation equipment on the south side of the airstrip. Takeoff was made to the west going downhill and he noticed "considerable drift to the right (north)." He lowered the left wing to correct for the drift. As the airplane lifted off, the left wing struck an irrigation buggy wheel, causing the airplane to spin around 180 degrees. The airplane slid backwards, tearing off the tail wheel, and came to a halt under the sprinkler arm. A report filed by the Larimer County Sheriff's Department corroborated the events reported by the pilot.

The wind recorded at the Fort Collins-Loveland Municipal Airport, located 13 miles north of the accident site, was from the south (160 degrees) at 7 knots with gusts to 14 knots.

Aircraft

Registration
N99DF
Reported as
Fisher Glastar GS-1 (GLASTAR GS)
Category
Airplane, amateur-built
Serial number
5221
Airframe hours
38
Engine
Lycoming O-320-A1A, 150 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
David M. Fisher
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · September 9, 1999 · 38 hours before
Departed
NONE
Destination
2V2 · Longmont, CO

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
72
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,185 total · 38 in this make and model · 1,000 as pilot in command · 10 in the last 90 days · 5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 7 knots, gusting 14
Visibility
10 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 55 °F
Altimeter
30.00 inHg
Observed at
FNL, 13 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.