MKC84LU005

NTSB accident investigation · UFM Easy Riser · Des Moines, IA · July 7, 1984

Accident · Serious injuriesFinal report
Date
July 7, 1984, 10:30 local (15:30 UTC)
Place
Des Moines, IA
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
UNREGUFM Easy Riser
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
33801

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.

Loss of control - in flightManeuvering
Maneuver - initiatedPilot in command
Airspeed - inadequatePilot in commandCause
Stall/spin - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The ultralight was making turns at low alt when it stalled and spun into the ground. The plt was unable to recover before ground impact.

Aircraft

Registration
UNREG
Reported as
UFM Easy Riser
Category
Ultralight, amateur-built
Engine
Yamaha 100, 15 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 103
Registered owner
Randy D. Stackhouse

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
32
Airplane ratings
Single-engine land
Medical
Unknown
Seat
Center
Flight hours
100 total · 100 in this make and model · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
90° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
75 °F