NTSB Identification: CHI87FA149.
The docket is stored on NTSB microfiche number 37171.
Accident occurred Saturday, June 20, 1987 in TOMAH, WI
Probable Cause Approval Date: 05/26/1989
Aircraft: CESSNA 172A, registration: N7189T
Injuries: 2 Fatal,1 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 PILOT HAD FLOWN A CLOSED PATTERN AND WAS MAKING TOUCH AND GO LANDING. A WITNESS SAW THE ACFT BOUNCE AND THEN INITIATE A GO AROUND. THE SURVIVING PAX SAID THE STALL WARNING HORN WAS SOUNDING 'A LONG TIME.' AT MIDPOINT OF DOWNWIND LEG THE ACFT STALLED OUT. THE ACFT IMPACTED THE GROUND IN A VERTICAL DIVE. POST ACC TEARDOWN OF THE ENG REVEALED IT WAS CAPABLE OF NORMAL OPERATION. NO MALFUNCTIONS OF THE ACFT WERE FOUND. THE FLAPS WERE FOUND SET AT 20 DEGREES DOWN OSITION. THE CARB HEAT CONTROL WAS DESTROYED IN THE CRASH SO ITS SETTING COULD NOT BE DETERMINED.

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:

STALL..INADVERTENT..PILOT IN COMMAND


Contributing Factors

AIRSPEED(VSO)..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

RAISING OF FLAPS..NOT PERFORMED..PILOT IN COMMAND

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