NTSB Identification: DEN84FU010.
The docket is stored on NTSB microfiche number 26778.
Accident occurred Sunday, September 09, 1984 in ERIE, CO
Aircraft: WEEDHOPPER B, registration: NONE
Injuries: 1 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

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.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IGNITION SYSTEM,IGNITION HARNESS..LOOSE

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

STALL..INADVERTENT..PILOT IN COMMAND

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