DEN84FU010

NTSB accident investigation · Weedhopper B · Erie, CO · September 9, 1984

Accident · Serious injuriesFinal report
Date
September 9, 1984, 08:10 local (14:10 UTC)
Place
Erie, CO
Injuries
1 serious
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
UNREGWeedhopper B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
16264

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 engine power(partial) - mech failure/malfManeuvering
Ignition system,ignition harness - looseCause
Forced landingApproach
Loss of control - in flightApproach
Aircraft weight and balance - excessive
Airspeed - not maintainedPilot in commandCause
Stall - inadvertentPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The ultralight engine lost power while the plt was in a practice area. He returned to the arpt, and during the attempt to land, the acft crahsed. An instructor said the acft seemed to be flying slower than normal and the plt extended the downwind turn to base leg more than normal. The acft crashed about half a mile from the arpt. The control stick was jammed in the full nose up position. This particular acft was nose heavy because of the installation of a larger engine. An exam of the engine revealed that one of the two spark plug leads was loose, allowing minimal contact between the lead & the spark plug.

Aircraft

Registration
UNREG
Reported as
Weedhopper B
Category
Ultralight, amateur-built
Engine
Zenoah G34BW2, 40 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 103
Registered owner
Andre J. Smith
Airport
48V · Tri-County, runway 1, 1,150 × 40 ft, dirt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
28
Airplane ratings
Single-engine land
Medical
Unknown
Seat
Center
Flight hours
9 total · 1 in this make and model · 2 as pilot in command · 9 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 5 knots
Visibility
70 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 45 °F
Altimeter
30.00 inHg
Observed at
DEN, 19 nm away