NTSB Identification: CHI86FA200.
The docket is stored on NTSB microfiche number 33952.
Accident occurred Wednesday, August 06, 1986 in SHELBY, IN
Probable Cause Approval Date: 01/25/1988
Aircraft: PIPER PA-28-235, registration: N4383X
Injuries: 4 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 NON-INSTRUMENT RATED PILOT INITIATED THE VFR FLIGHT FROM WHEELING, IL, TO MADISON, IN, IN MARGINAL WEATHER CONDITIONS. THE WRECKAGE WAS FOUND ON THE AFTERNOON OF THE FOLLOWING DAY ABOUT 26 MILES SOUTH OF GARY, IN. THE AIRCRAFT SUSTAINED AN IN-FLIGHT BREAKUP WHEREIN BOTH WINGS, THE RIGHT STABILATOR AND THE VERTICAL FIN AND RUDDER SEPARATED. INVESTIGATION SHOWED THE BREAKUP OCCURRED BECAUSE OF AERODYNAMIC FORCES THAT EXCEEDED THE DESIGN LIMITATIONS.

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

PREFLIGHT PLANNING/PREPARATION..IMPROPER..PILOT IN COMMAND

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

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND

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

FLIGHT INTO KNOWN ADVERSE WEATHER..ATTEMPTED..PILOT IN COMMAND

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

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND

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

SPATIAL DISORIENTATION..PILOT IN COMMAND

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

DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND

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