 In 1994 the pilots of Zantop voted to join the Teamsters union primarily known for organizing auto workers.Partially in response Zantop created a dedicated FAR Part 125 Certificate that could operate without unionized pilots but this was insufficient to save the airline from the rapidly evolving air freight industry and competition from much larger UPS and FedEx.In the early 2000s Zantop surrendered their operating certificates to the FAA, sold their aging aircraft  and ceased operations.