NTSB Identification: CHI83FA347.
The docket is stored on NTSB microfiche number 22412.
Accident occurred Monday, August 01, 1983 in MUSKEGON, MI
Aircraft: NORTH AMERICAN AT-6D, registration: N29938
Injuries: 1 Fatal,2 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.

THE ACFT COLLIDED WITH TREES AFTER PERFORMING AN AEROBATIC MANEUVER AT LOW ALTITUDE. WITNESSES NEAR THE SCENE SAID THE ACFT WAS FLYING LOW; MOST HEARD THE ENGINE RUNNING.SOME SAID THAT AT THE TOP OF A LOOP THE ENGINE SOUNDED LIKE IT STOPPED. ON THE DESCENT FOLLOWING THE LOOP THE ACFT MADE ABOUT 2 ROLLS TO THE RIGHT AND LEVELED OFF. THEN A CRASH WASHEARD. A SINGLE WITNESS SAW THE ACFT ABOUT 50 FT ABOVE THE TREES. HE HEARD THE ENGINE ROAR AND SAW THE ACFT BANK ABOUT 45 DEGREES TO THE LEFT THEN COLLIDED WITH THE TREES. HE SAID THE ACFT HAD 'GOOD SPEED.' NO EVIDENCE OF FAILURE OR MALFUNCTION OF THE ACFT WAS FOUND DURING THE INVESTIGATION. THE BACK SEAT ADULT PASSENGER SAID THE ACFT PERFORMED WELL.

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

AEROBATICS..PERFORMED..PILOT IN COMMAND

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

JUDGMENT..NOT USED..PILOT IN COMMAND

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

PROPER ALTITUDE..NOT MAINTAINED..PILOT IN COMMAND

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

CLEARANCE..INADEQUATE..PILOT IN COMMAND

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