SEA83FU006

NTSB accident investigation · American Aerolights Eagle XL · Happy Valley, OR · July 4, 1983

Accident · Serious injuriesFinal report
Date
July 4, 1983, 13:50 local (20:50 UTC)
Place
Happy Valley, OR
Injuries
1 serious
Damage
Destroyed
Phase of flight
Maneuvering
Aircraft
UNREGAmerican Aerolights Eagle XL
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
39640

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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Analysis

The ultralight collided with the terrain while maneuvering during an airshow. According to witnesses, the pilot had just executed a touch-and-go landing and commenced a climbing 180 degree left turn to downwind in what was described as a wingover type maneuver. During the turn, the vehicle was observed to exceed 90 degrees of bank (left wingdown) and a rapid slip developed. The ultralight was placarded for a maximum angle of bank of 6O degrees. It was observed to descend into trees in an extreme left wing low condition.

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 flightManeuvering
Procedures/directives - disregardedPilot in commandCause
Aerobatics - performedPilot in commandCause
Aircraft handling - improperPilot in commandCause
Stall - uncontrolledPilot in commandFactor
In flight collision with terrain/waterManeuvering

Aircraft

Registration
UNREG
Reported as
American Aerolights Eagle XL
Category
Ultralight
Engine
Cuyuna 430B, 30 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 103
Registered owner
Anthony Krause
Airport
S15 · Troh'S Happy Valley, runway 34, 2,300 × 25 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
29
Airplane ratings
Single-engine land
Medical
Unknown
Seat
Front
Flight hours
60 total · 60 in this make and model · 60 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 8 knots
Visibility
35 statute miles
Lowest ceiling
None
Temperature
79 °F, dew point 63 °F
Altimeter
30.00 inHg
Observed at
TTD, 8 nm away