NTSB Identification: CHI83LA233.
The docket is stored on NTSB microfiche number 22104.
Accident occurred Saturday, May 28, 1983 in WOODRUFF, WI
Aircraft: PIPER PA-34-200T, registration: N2164X
Injuries: 5 Uninjured.

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 PLT WAS BRIEFED ON THE WX BEFORE DEPARTING WAUKEGAN, IL. AT THE DESTINATION, WOODRUFF, WI, THE WX WAS FORECASTED TO BE VFR, EXCEPT FOR LIGHT RAIN & THE CHANCE OF SCATTERED THUNDERSTORMS. WHILE EN ROUTE, THE PLT CHECKED ON THE WX & SPOKE WITH ANOTHER PLT THAT HAD JUST FLOWN ALONG HER INTENDED ROUTE. THE DESTINATION ARPT REMAINED VFR AS FORECASTED. BEFORE ARRIVAL, THE ACFT ENTERED CLOUDS & PROCEEDED INTO AN AREA OF THUNDERSTORMS. THE PLT REPORTED HER RADAR WAS PAINTING HEAVY CELLS OVER THE ARPT & IN ALL DIRECTIONS, THEN STARTED TO DIVERT. SHORTLY AFTER REVERSING COURSE, THE ACFT ENCOUNTERED A STRONG DOWNDRAFT. THE PLT ADDED POWER & RAISED THE NOSE. SHE REPORTED 'WE WERE PULLED UP INTO A STALL.' AT THIS POINT, THE ACFT ENTERED A NEAR VERTICAL DIVE. DURING RECOVERY, THE LEFT WING HIT A TREE, BUT THE ACFT CONTINUED TO FLY. BY THEN, THE ACFT WAS OUT OF THE CLOUDS & THE PLT FLEW TO THE ORIGINAL DESTINATION & LANDED. DURING THE LANDING, THE LEFT GEAR WAS 'SHUTTERING.' THE ACFT THEN BEGAN TO SKID, WENT OFF RWY & THE LEFT GEAR FAILED.

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:

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND


Contributing Factors

OBJECT..TREE(S)




Contributing Factors

WEATHER CONDITION..CLOUDS


Contributing Factors

WEATHER CONDITION..RAIN


Contributing Factors

WEATHER CONDITION..THUNDERSTORM



Contributing Factors

WEATHER RADAR..IMPROPER USE OF..PILOT IN COMMAND



Contributing Factors

WEATHER CONDITION..DOWNDRAFT


Contributing Factors

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

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