NTSB Identification: LAX82FVG28
14 CFR Part 91: General Aviation
Accident occurred Tuesday, July 06, 1982 in PLACERVILLE, CA
Probable Cause Approval Date: 07/06/1983
Aircraft: MILLER TUFTS T-3-160, registration: N1051K
Injuries: 1 Fatal.

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 HOME BUILT ACFT WAS OF THE PLT'S OWN DESIGN. IT WAS A 4 PLACE, LOW WING ACFT WITH A LARGE CANOPY & SMALLER VERT TAIL SURFACES AND WAS EQUIPPED WITH FLAPS, FOLDING WINGS & FIXED TAIL WHL GEAR. THE PLT/DESIGNER WAS TRYING A NEW CONCEPT OF LATERAL CONTROL BY USING "ROLLERONS" INSTEAD OF CONVENTIONAL AILERONS. THEY OPERATED SOMEWHAT LIKE SPOILERS ON A GLIDER. THE ROLLERONS WERE 2 FT LONG, 6 IN WIDE, INSTLD ON THE TOP & BOTTOM OF EACH WING AT THE TIPS. FOR A RGT TURN, THE RGT TOP ROLLERON WOULD MOVE UP 8 THE LFT BOTTOM WOULD MOVE DWN WHILE THE OTR 2 RMND IMMOBILE. FOR A HI SPD TAXI TEST, THE RUDDER & ELEVATORS WERE TUFTED WITH YARN TO SHOW AIRFLOW & AN ASSOCIATE FLWD TO OBSV. HE RPRTD THAT THE ACFT BCM AIRBORNE, VEERED OFF THE RWY, WENT DWN A STEEP EMBANKMENT, THEN CRASHED & BURNED. ANOTHER ASSOCIATE OF THE PLT RPRTD THAT WHEN HE TAXIED THE ACFT AT HI SPD, IT FELT LIKE IT WAS CROSS-CONTROLLED & THERE WAS A "DEAD SPOT" WHEN THE "ROLLERON" CONTROL WAS AT THE NEUTRAL POSITION.

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

DIRECTIONAL CONTROL..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

LIFT-OFF..INADVERTENT..PILOT IN COMMAND


Contributing Factors

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


Contributing Factors

TERRAIN CONDITION..DOWNHILL


Contributing Factors

TERRAIN CONDITION..HIGH VEGETATION

Index for Jul1982 | Index of months