It won a 1933 competition , but Loening was already busy building other aircraft , so the contract was canceled .
The Loening XFL was a proposed carrier - based fighter aircraft to be built by Loening Aeronautical Engineering for the US Navy .
Loening XFL won a 1933 competition , but Loening Aeronautical Engineering was already busy building other aircraft , so the contract was canceled .
The Loening XFL was a proposed carrier - based fighter aircraft to be built by Loening Aeronautical Engineering for the US Navy .