NTSB Identification: DEN83FA150.
The docket is stored on NTSB microfiche number 23070.
Accident occurred Thursday, June 23, 1983 in GILLETTE, WY
Aircraft: LAKE LA-4-200, registration: N6029V
Injuries: 1 Fatal,4 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 PLT HAD RECENTLY PURCHASED THE ACFT. WHILE ON A X-COUNTRY TRIP, HE LANDED AT AN ARPT WITH AN ELEVATION OF 4363 FT & REFUELED. WHEN HE WAS TAKING OFF, THE DENSITY ALT WAS APRX 7089 FT & THE ACFT WAS NEAR ITS MAX GROSS WT LIMIT. SHORTLY AFTER LIFT-OFF, THE PLT RADIOED THAT HE 'WAS HAVING A LITTLE TROUBLE GAINING ALT.' HE THEN STATED THAT THE ACFT HAD PROBLEMS & HE DIDN'T KNOW WHAT THEY WERE. A STALL WARNING HORN WAS OPERATING AS HE WAS TRANSMITTING. THE ACFT SUBSEQUENTLY CRASHED IN A NOSE DOWN, LEFT WING LOW ATTITUDE WHILE AT A RELATIVELY LOW AIRSPEED. AN EXAM OF THE ENG, ACFT SYSTEMS & FLT CONTROLS REVEALED NO EVIDENCE OF A FAILURE OR MALFUNCTION. ACCORDING TO A LYCOMING REP, THE ENG WOULD HAVE BEEN PRODUCING A MIXIMUM OF 79% OF ITS RATED POWER AT A DENSITY ALT OF 7089 FT.

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

PLANNING/DECISION..IMPROPER..PILOT IN COMMAND

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/MUSH..INADVERTENT..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..HIGH DENSITY ALTITUDE


Contributing Factors

LACK OF TOTAL EXPERIENCE IN TYPE OF AIRCRAFT..PILOT IN COMMAND

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