ANC94LA095

NTSB accident investigation · Starman Teirra II · North Pole, AK · July 31, 1994

Accident · No injuriesLimited investigationFinal report
Date
July 31, 1994, 14:00 local (22:00 UTC)
Place
North Pole, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N43111Starman Teirra II
Weather
Visual (VMC) · Day
Status
Completed · report January 25, 1995
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19940731024359A
Case key
2532

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 seizure of the no. 2 cylinder as a result of an inadequate cooling system for the high ambient temperature.

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 engine power(total) - mech failure/malfCruise
Engine assembly,cylinder - seizedCause
Cooling system - inadequateCause
Forced landingDescent - emergency
In flight collision with terrain/waterDescent - emergency

Analysis

Shortly after takeoff, while in cruise flight, the engine quit without warning. A post accident inspection of the engine by an FAA airworthiness inspector revealed that the no. 2 engine cylinder had overheated and seized up. At the time of the accident, the ambient temperature was 95 degrees fahrenheit.

Factual narrative

On July 31, 1994, at 1400 Alaska daylight time, a wheel equipped Starman Teerra-II experimental homebuilt ultralight airplane, N43111, owned and operated by the pilot, collided with terrain as a result of a total loss of engine power while in cruise flight. The accident site is across from the Bradley Sky Ranch Airport on the south side of the Tanana River. The private certificated pilot, the sole occupant, was not injured and the ultralight was substantially damaged. The local VFR pleasure flight, conducted under 14 CFR Part 91, last departed the Bradley Skyranch Airport at about 1330. Visual meteorological conditions prevailed and no flight plan was on file.

The pilot reported that shortly after takeoff, while in cruise flight at 200 ft. above the ground, the engine quit without warning. He performed an emergency landing by stalling the airplane just above a lightly wooded area and letting it settle into the trees.

A post accident examination of the engine by an FAA airworthiness inspector revealed that the No. 2 engine cylinder had overheated and seized up.

Aircraft

Registration
N43111
Reported as
Starman Teirra II
Category
Ultralight, amateur-built
Serial number
121691
Airframe hours
110
Engine
Rotax 582, 65 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Starman, Sylvester H.
Registered owner
Starman, Sylvester H.
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · July 10, 1993 · 110 hours before

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
34
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
230 total · 110 in this make and model · 230 as pilot in command · 40 in the last 90 days · 15 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
40 statute miles
Lowest ceiling
None
Temperature
81 °F

FAA reports on this event · 1

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