SEA85FA228

NTSB accident investigation · Teratorn Tierra II · Post Falls, ID · September 29, 1985

Accident · FatalField investigationFinal report
Date
September 29, 1985, 11:19 local (18:19 UTC)
Place
Post Falls, ID
Injuries
2 fatal
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
UNREGTeratorn Tierra II
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
40065

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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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/malfunctionManeuvering
Wing,spar - previous damageFactor
Maintenance,inspection - inadequatePilot in commandCause
ComplacencyPilot in commandFactor
Wing,spar - failure,totalCause
Maintenance,major repair - not performedPilot in commandCause
Loss of control - in flightManeuvering
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The acft contacted the terrain in an uncontrolled descent following an inflt separation of the left wing. A witness stated the left wing separated as the acft was being maneuvered in a race track pattern using bank angles of 45 degs. The wife of the acft owner reported the acft was damaged during an instructional flt on the previous day. The left wing and landing gear were reportedly damaged in the accident. The acft was said to have been repaired that afternoon. However, no evidence was found to suggest the fabric on the wing was removed for inspection of structural damage. It was not determined if the flight was for personal or instructional purposes.

Aircraft

Registration
UNREG
Reported as
Teratorn Tierra II
Category
Airplane, amateur-built
Engine
Rotax 532, 65 horsepower, reciprocating
Damage
Destroyed
Flight
Part 91
Operator
Dale A. Carter, doing business as Custom Toys, Inc.
Registered owner
Arlan F. Schuttemeier
Airworthiness certificate
Special, Experimental (Special)
Departed
Liberty Lake, WA

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
32
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Right
Toxicology
Performed
Flight hours
700 total

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
None
Temperature
46 °F, dew point 25 °F
Altimeter
30.00 inHg
Observed at
COE, 10 nm away