In his playing days in the Ski World Cup 1981-1994 he was able to celebrate many successes especially in the downhill event. He won at least one race on the most important exit routes (Val d'Isere, Wengen, Kitzbühel, Gardena, Garmisch -Partenkirchen, Aspen, Lake Louise ) and was a total of 17 times on top of the podium. Between 1991 and 1993 he won three consecutive World Cup downhill, in addition to the 1991 Super G World Cup.
His biggest success was winning the downhill world championship title in Saalbach -Hinterglemm 1991, after three fourth places in the three previous World Championships. At the 1994 Winter Olympics in Lillehammer, he was very unlucky: In the downhill, he was just a few meters far, since just after the start, the ski binding broke. A few weeks later Heinzer ended his career.
Since then, he directs a sporting goods market - currently in Altdorf - and supervises the winter of 2004, the Swiss Abfahrerteam as assistant coach.
Prior to his gold medal Franz Heinzer was dogged by bad luck at the World Championships. He finished at the World Cup downhill in Schladming (1982 ), Bormio (1985) and Crans -Montana ( 1987) fourth place respectively. He also failed in 1989 in Vail in the team-internal qualification.
- Calgary 1988: 15 Super -G, downhill 17
- Albertville 1992: 6 Departure
- Schladming 1982: 4th exit
- Bormio 1985: 4th exit
- Crans -Montana 1987: 4th exit
- Vail / Beaver Creek 1989: 11 Super -G
- Saalbach -Hinterglemm 1991 1st exit, 10 Super -G
- Morioka 1993: 10 Departure
- 3rd place in 1992/93
World Cup wins
Heinzer won 17 World Cup races ( 15 runs and 2 combinations ), reaching an additional 28 podiums.
- Quintuple Swiss Champion (4x departure, 1x Super -G)