Siasconsent Air was an unseen operation which once operated at Tom Nevers Field on Nantucket, Massachusetts. It had been operating at Tom Nevers Field for some time at least until 1987. It was a partnership of two men. A prominent woman known as Eleanor Kingsbury was a passenger on one of their flights during which part of her luggage was mislabeled. The bag was found after a short search, but it proved disastrous for the business. Mrs. Kingsbury had proven to be such a petty, vindictive person that she called in the mortgage on the airline within the scope of eleven minutes that the bag was lost. Unable to make the sudden balloon payment, the owners had no choice but have their airline repossessed. The two founders then got new jobs, where they were last seen as employees of the Stop & Shop before both made the decision to leave the island for parts unknown. Either this job did not last long or the owners felt they had fallen so hard they resigned from that and decided to move away from Nantucket.
The counter at Tom Nevers Field remained unoccupied until it was rented by Joe Hackett, who established Sandpiper Air at the counter formerly occupied by Siasconset Air. Memories about Siasconset Air faded into obscurity until Eleanor Kingsbury chartered a flight on Sandpiper, where Joe and his brother Brian would make an even worse mistake than did the owners of Siasconset Air. Fay Cochran warned the brothers about the downfall of Siasconset Air, which Brian had never heard of, but Joe was familiar with it, adding they were the predecessors to Sandpiper as they rented the counter before the Hackett brothers. Fay and the Hacketts tried to cover their tracks in a manner that would ultimately come back to haunt Eleanor Kingsbury and cause her to get her comeuppance for her haughtiness to the Siasconset Air owners.