NTSB Identification: CHI83LA238.
The docket is stored on NTSB microfiche number 22325.
Accident occurred Saturday, June 04, 1983 in PARK FORREST, IL
Aircraft: CESSNA 305A, registration: N5258G
Injuries: 2 Minor.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE ACFT WAS BEING FLOWN ON A ROUTINE FLIGHT CHECK AFTER HAVING COMPLETED AN ANNUAL INSPECTION. THE PLT STATED THAT AFTER TAKEOFF HE CLIMBED TO 800 FT, TURNED DOWNWIND, EXTENDED FLAPS TO 30 DEG, SLOWED TO 70-80, & INTENDED TO MAKE A PASS OVER THE FIELD TO MAKE SURE IT WAS CLEAR PRIOR TO MAKING A FINAL APPROACH FOR LANDING. THE PLT THEN STATED THAT UPON ENTRY TO A RWY HEADING THE ACFT 'APPARENTLY ENTERED AN AREA OF EXTREME THERMO-LIFT CAUSING RIGHT WING TO RISE SUDDENLY CAUSING MOMENTARY INCREASE IN BANK AND APPARENT ACCELERATED STALL CAUSING AIRCRAFT TO DIVE INTO GROUND.' THE OFFICIAL TEMPERATURE RECORDED 0850 AT CHICAGO MIDWAY ARPT, LOCATED 18 MI NORTH, WAS 68 DEG F.

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

AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

LOW PASS..PERFORMED..PILOT IN COMMAND

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