[QUOTE Spartan Airlines was also a manufacturer, in this context [url=https://en.wikipedia.org/wiki/Spartan_Cruiser]the Spartan Cruiser
which was a trimotor (Gypsy Major) monoplane for 2 crew and 8 passenges. There were 2 marks in airline service, the Cruser II with range of 310 miles, max speed 133 MPH (cruising speed 115), and the Cruiser III with a range of 550 miles and sppeds of 135/118 MPH. ][/QUOTE]
The reason Spartans were written off after being taken over by the RAF was the degee of corrosion brought about by landing on sea beaches.
It is also a good reason for using fixed undercarriage aircraft for such!