NTSB Identification: ANC88FA056.
The docket is stored on NTSB microfiche number 36073.
Accident occurred Saturday, May 14, 1988 in ANCHORAGE, AK
Probable Cause Approval Date: 04/25/1989
Aircraft: CESSNA U206, registration: N4844X
Injuries: 1 Uninjured.

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.

A DEAF-MUTE ADULT MALE, WHO HAS A HISTORY OF MENTAL HEALTH PROBLEMS, AND WHO WAS A MENTAL HEALTH WARD OF THE STATE OF ALASKA AT THE TIME OF THE ACCIDENT, ENTERED A CESSNA 206 AIRPLANE EQUIPPED WITH AMPHIBIOUS FLOATS WITHOUT PERMISSION WHILE IT WAS PARKED ON AN UNCONTROLLED RAMP AREA NEAR ANCHORAGE INTERNATIONAL AIRPORT. HE SUBSEQUENTLY STARTED THE KEYLESS AIRPLANE AND TAXIED IT AT NEARLY FULL POWER FOR APPROXIMATELY 185 FEET UNTIL IT COLLIDED WITH A COMMERCIAL BUILDING AND A PARKED AUTOMOBILE. THE 'PILOT' WAS APPREHENDED AND TAKEN INTO CUSTODY BY LAW ENFORCEMENT OFFICERS.

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

STOLEN AIRCRAFT/UNAUTHORIZED USE..UNQUALIFIED PERSON

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

AIRCRAFT CONTROL..NOT UNDERSTOOD..UNQUALIFIED PERSON


Contributing Factors

OBJECT..BUILDING(NONRESIDENTIAL)


Contributing Factors

OBJECT..VEHICLE

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