As Houston-based private air operator Million Air moves closer to winning approval for its new facility at Pease International Tradeport, the company’s dispute with officials in Westchester, N.Y. is heating up. The company says it is just how business works, but critics say the experience is a preview of coming attractions for the Seacoast facility.

The Westchester Airport Advisory Committee is expected to approve a letter detailing the county’s problems with Million Air and urging county officials to continue the legal battle against the operator.

“Million Air has not proven itself to be a good neighbor, and it should not be given the benefit of the doubt,” said Peter Schlactus with the Coalition to Stop Westchester Airport Expansion.

Million Air is currently suing Westchester County, claiming the county violated its lease agreement when it tried to stop the air operator’s expansion at the Westchester Airport.

Schlactus, however, said the company is not pursuing its expansion in good faith and violated the original agreement with the airport.

“Million Air is relying on what it claims is a verbal understanding with the prior administration,” Schlactus said. “(What they are doing is) nowhere to be found in the agreements they actually signed. Million Air is trying to stretch the sense of what an agreement is.”

The Westchester Airport is the third busiest airport in New York state after LaGuardia and JFK, Schlactus said. Most of the traffic, however,…