NTSB Identification: ANC83FA075.
The docket is stored on NTSB microfiche number 22899.
Accident occurred Monday, April 25, 1983 in SOLDOTNA, AK
Aircraft: PIPER PA-18, registration: N4396Z
Injuries: 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.

WITNESSES OBSERVED THE ACFT MANEUVERING ERRATICALLY NEAR THE ARPT & ANTICIPATED THE ACCIDENT. THE 1ST APPROACH TO RWY 25WAS DESCRIBED AS ERRATIC WITH MINIMAL APPARENT CONTROL WHICH INCLUDED AN ABRUPT PULL-UP, STALL, BOUNCE, & GO-AROUND IN ALEFT PATTERN AT 300 FT AGL. THE 2ND BASE LEG WAS A VERY SHALLOW(FLAT/SKIDDING) TURN & THE ACFT DISAPPEARED BEHIND TREES.THE PLT HAD A HISTORY OF DISEQUILIBRIUM & HAD INTERMITTENTLY BEEN TAKING DYAZIDE FOR HYPERTENSION OF UNKNOWN DOSES. ALL OF THE PLT'S PHYSICIANS & SURGEONS DECLINED TO PROVIDE INFORMATION. THE PLT HAD NOT OBTAINED A MEDICAL CERTIFICATE SINCE12/28/77.

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

AIRCRAFT HANDLING..UNCONTROLLED..PILOT IN COMMAND

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

INCAPACITATION..PILOT IN COMMAND

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