N40423 Martin 404 World Citizens International Inc. San Francisco - International (SFO / KSFO), USA - California Jay Sherlock - 04/1973
N40423 Martin 404 Naples Airlines & Provincetown-Boston Airline (PT / PBA) Naples - Municipal (APF / KAPF), USA - Florida Mike Jones - 11/04/1979
N40423 Martin 404 PBA - Provincetown-Boston Airline (PT / PBA) Miami - International (MIA / KMIA), USA - Florida Keith Sowter - 16/04/1982
