List of Thor DM-18A launches

The Thor DM-18A was an American suborbital launch vehicle. It flew 50 times. It had 6 failures, 3 partial failures, and 41 successes. It had a 82% launch reliability. Its first flight attempt was on 5 November 1958. Its first successful launch was on 16 December 1958. Its last launch was on 19 June 1962. The Thor DM-18A was evolved from the Thor DM-18, the first Thor rocket. Thor DM-18A was the first operational finless variant of the original missile.