FTW95LA034

NTSB accident investigation · Brisendine Pterodactyl/Ascender · Las Animas, CO · October 29, 1994

Accident · FatalLimited investigationFinal report
Date
October 29, 1994, 10:20 local (16:20 UTC)
Place
Las Animas, CO
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
UNREGBrisendine Pterodactyl/Ascender
Weather
Visual (VMC) · Day
Status
Completed · report June 19, 1995
Report
Approved by Office Director
Case key
19296

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

A failure of the right wing into the propeller.

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.

Airframe/component/system failure/malfunctionCruise
Wing - failure,totalCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The homebuilt was in cruise flight approximately 100 feet above ground level when the right wing failed into the propeller. The aircraft made an uncontrolled descent into the ground. The investigation did not disclose any information pertaining to the pilot's flight experience.

Factual narrative

On October 29, 1994, at 1020 mountain daylight time, an unregistered Pterodactyl Ascender homebuilt was destroyed when the right wing failed in flight approximately 5 miles east of Las Animas, Colorado. The unlicensed pilot sustained fatal injuries on this local area personal flight which departed Hasty, Colorado, earlier in the morning.

According to witness information, the aircraft was in cruise flight approximately 100 feet above ground level when the right wing folded into the propeller. The aircraft made an uncontrolled descent into the ground. Witnesses arrived on the scene within a short period of time and attempted to assist the pilot until paramedics arrived.

During the course of the investigation, no information was found pertaining to the flight experience of the pilot. It is the investigator's estimate that the pilot had less than 10 hours of flight time.

Weather conditions in the area were reported to be clear skies and light winds at the time of the accident.

On scene examination by an FAA inspector could not determine the failure mode.

Aircraft

Registration
UNREG
Reported as
Brisendine Pterodactyl/Ascender (PTERODACTY)
Category
Airplane, amateur-built
Serial number
942
Engine
Rotax 430R, 30 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Registered owner
Brisendine, Cleo C.
Departed
Hasty, CO
Destination
CO

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
48
Seat
Front
Flight hours
10 total

Weather

Conditions
Visual (VMC) · Day
Wind
60° at 7 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 25 °F
Altimeter
30.00 inHg
Observed at
LHX, 20 nm away