NTSB Identification: MKC85FA066.
The docket is stored on NTSB microfiche number 27449.
Accident occurred Sunday, March 03, 1985 in CEDAR RAPIDS, IA
Aircraft: PIPER PA-23, registration: N1241P
Injuries: 3 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.

PLT REPORTED NO FORWARD VIS DUE TO ICE ON WINDSHIELD. N1291P THEN DIVERTED TO CID WHICH HAS RAPCON. THE TEMP AT THE SURFACE WAS 32 DEGS F BUT WAS REPORTED TO BE HIGHER AT 4,000 FT MSL. THE FLT CLIMBED TO 4,000 FT AND BEGAN LOSING THE ICE BUT THEN REPORTED GETTING IN WORSE TROUBLE. CID VECTORED THE ACFT TOWARD THE CID ARPT AND WHILE DESCENDING N1291P REPORTED THAT AN ENG HAD QUIT. N1291P SAID THE ACFT COULD NOT MAINTAIN ALTITUDE AND THEN REPORTED GOING DOWN. AIRCRAFT ENTERED A SPIN AND CRASHED IN AN OPEN FARM FIELD. THIS ACFT WAS NOT EQUIPPED FOR FLT IN ICING CONDITIONS. EVEN THOUGH THE CARBURETOR HEAT CONTROL WAS FOUND IN THE FULL ON POSITION, THE PITOT HEAT CONTROL WAS FOUND IN THE OFF POSITION. NO PROP,WINDSHIELD,OR AIRFRAME DEICING EQUIPMENT WAS INSTALLED BUT A WINDSHIELD ELECTRICAL ANTI-ICE WAS INSTALLED & ON. THE PLTS WX BRIEFING WAS(LIMITED BY THE PLT) A PARTIAL ONE BUT INCLUDED THE FLT PRECAUTIONS FOR ICING CONDITIONS,IFR & TURBULENCE. THE ACFT MODIFICATION TO PERMIT USE OF AUTO GAS INCREASED CARB ICING POTENTIAL(FAA AC 91-33A).

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

AIRSPEED(VMC)..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

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

LACK OF RECENT TOTAL EXPERIENCE..PILOT IN COMMAND

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

PREFLIGHT BRIEFING SERVICE..DISREGARDED..PILOT IN COMMAND

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

LACK OF RECENT INSTRUMENT TIME..PILOT IN COMMAND

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

OPERATION WITH KNOWN DEFICIENCIES IN EQUIPMENT..IMPROPER..PILOT IN COMMAND


Contributing Factors

WEATHER CONDITION..CARBURETOR ICING CONDITIONS



Contributing Factors

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


Contributing Factors

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


Contributing Factors

WEATHER CONDITION..ICING CONDITIONS

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