NTSB Identification: DEN87LA116.
The docket is stored on NTSB microfiche number 33407.
Accident occurred Thursday, April 30, 1987 in GREELEY, CO
Probable Cause Approval Date: 03/10/1988
Aircraft: WEATHERLY 620, registration: N9256W
Injuries: 1 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE PLT DEPARTED WITH FULL FUEL IN THE ACFT TO PRACTICE AERIAL SPRAYING TECHNIQUES. AFTER 45 MINS OF PRACTICE HE RETURNED TO THE ARPT FOR LANDING. HE SAID THAT PRIOR TO ENTERING THE TRAFFIC PATTERN HE SWITCHED FROM THE HALF-FULL RIGHT TANK TO THE FULL LEFT TANK. THREE MINS LATER, WHILE ON THE DOWNWIND LEG AT 300-400 FT AGL, THE ENG LOST PWR. THE PLT SAID HE WAS TOO LOW TO LOOSEN HIS SHOULDER HARNESS AND FEEL THE FUEL SELECTOR BUT HE VISUALLY CHECKED IT AND IT APPEARED TO BE POSITIONED CORRECTLY. HE SAID HE APPLIED CARB HEAT AND TURNED THE BOOST PUMP ON BUT PWR WAS NOT RESTORED. THE PLT ATTEMPTED TO LAND IN AN OPEN FIELD ADJOINING THE ARPT BUT INADVERTENTLY STALLED THE ACFT ABOUT 20 FT AGL AND CRASHED. INVESTIGATION DISCLOSED NO EVIDENCE OF MECHANICAL FAILURE/MALFUNCTION OF ACFT OR ENG. FUEL WAS PRESENT IN TANKS AND LINES. ENG WAS LATER TEST RUN WITHOUT DIFFICULTY.

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

REASON FOR OCCURRENCE UNDETERMINED

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

AIRSPEED(VS)..BELOW..PILOT IN COMMAND

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

STALL..INADVERTENT..PILOT IN COMMAND


Contributing Factors

TERRAIN CONDITION..NONE SUITABLE



Contributing Factors

ALTITUDE..INADEQUATE..PILOT IN COMMAND

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