NTSB Identification: NYC83FNA01
14 CFR Part 91: General Aviation
Accident occurred Thursday, December 02, 1982 in MARSTONS MILLS, MA
Probable Cause Approval Date: 12/02/1983
Aircraft: CESSNA 150L, registration: N1433Q
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 ACFT WAS OBSERVED TO CLIMB AT A STEEP ANGLE TO 150-200 FT & THEN ENTER A SPIN. THE OWNER/PLT HAD JUST FINISHED INSTALLING STALL FENCES AS PART OF A STOL KIT THAT HE WAS IN THE PROCESS OF COMPLETING. EXAMINATION OF THE ACFT SHOWED A PARTIAL INSTALLATION OF THE STOL KIT WHICH INCLUDES LEADING EDGE CUFFS, STALL FENCES, AILERON SEALS & WING TIPS. ACCORDING TO THE FBO THE CUFFS WERE INSTALLED ON THE DAY OF THE ACCIDENT. THE STALL WARINING TRANSMITTER & AIR VENTS HADNOT BEEN INSTALLED. APPROXIMATELY 80 POUNDS OF TOOLS, CLOTHING, BED & CAMPING EQUIPMENT WERE FOUND IN THE BAGGAGE AREA. DURING ENG TEAR-DOWN THE DRAIN OIL WAS FOUND DIRTY & FELT GRITTY. THE OIL SCREEN & HOUSING CONTAINED METAL FLAKES, CARBON & SAND PARTICLES, & LINT. THE CAMSHAFT & CRANKSHAFT JOURNALS SHOWED EVIDENCE OF SCRATCHES & SCORE MARKS. THE #4 PISTON HAD A BROKEN OIL RING, APPROXIMATELY 1/5 OF IT WAS MISSING.

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

FLIGHT CONTROLS..IMPROPER USE OF..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/SPIN..INADVERTENT..PILOT IN COMMAND


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