BREWSTER, KS, USA
UNREG
MATTISON MAC 300
THE ULTRALIGHT WENT OUT OF CONTROL AND DOVE IN A COCKSCREW SPIRAL TO THE GROUND. THE VEHICLE DID NOT MOVE AFTER IMPACT. THE ACFT WAS AT ABOUT 200 FT AGL WHEN WITNESSES SAW IT DIP THE RIGHT WING AND START A SPIN WHICH WAS DESCRIBED AS A CORKSCREW. IT MADE 4 OR 5 REVOLUTIONS BEFORE HITTING THE GROUND. THE SHERIFF TOOK A PICTURE WHICH SHOWS THAT THE UPPER HINGE CLEVIS ON THE RUDDER POST IS NOT CONNECTED TO THE RUDDER SUPPORT POST. THE PIN IS IN THE SUPPORT POST CLEVIS. THE VEHICLE WAS HANGERED IN A SHED THAT REQUIRED THE RUDDER BE REMOVED TO HANGER IT. THE PILOT SAID HE INSTALLED THE RUDDER BEFORE THE ACCIDENT FLT.
Source: NTSB Aviation Accident Database
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