SKY DIVE ACFT DISCOVERED TO HAVE MISSING SEAT BELT FOR JUMPER. WT AND BAL PAPERS NOT IN ACFT.

Narrative

AFTER A SKY DIVING FATALITY AT 57C ARPT IN THE CITY OF E TROY; STATE OF WI; I RECEIVED A PHONE CALL FROM THE MILWAUKEE FSDO OFFICE IN REGARD TO THIS FATALITY INVESTIGATION. UPON ARRIVING AT THE MILWAUKEE FSDO DAYS LATER; IT WAS BROUGHT TO MY ATTN BY THE ACTING INVESTIGATOR WHO INSPECTED THE ACFT EARLIER THAT IT HAD A SEAT BELT MISSING FROM AN ASSIGNED FLOOR STATION. AS I UNDERSTOOD; THE PAPER WORK ON THIS SMA HAD A SUPPLEMENTAL TYPE CERTIFICATE FOR 1 PLT AND PLT SEAT AND 4 FLOOR STATIONS FOR 4 SKY DIVERS FOR A TOTAL OF 5 OCCUPANTS. I COMPLETED A PREFLT INSPECTION PRIOR TO PLACING THE ACFT ON THE FLT LINE. (I CYCLED 1 LOAD BEFORE THE FATALITY FLT AND 2 AFTER.) I DIDN'T NOTICE NOT WAS I TOLD OF ANYTHING UNUSUAL OR MISSING. AS FAR AS I AM CONCERNED ALL SEAT BELTS WERE SECURED AND AT THEIR PROPER STATIONS. IT WAS ALSO BROUGHT TO MY ATTN THAT THE WT AND BAL PAPERS MIGHT NOT HAVE BEEN LOCATED INSIDE THE ACFT. I ALSO WANT TO MAKE CLR THAT THIS FATALITY WAS IN NO WAY; SHAPE OR FORM RELATED TO THE CONDITION OF THE ACFT OR PLT.