These airplanes also have the distinction of being the longest operated and last of the biplanes used by the Navy even though the N2S 'Kaydet' was built in much larger numbers. Another unique feature of the 'YELLOW PERIL' was that it could be outfitted either with land gear or floats as pictured here. Also of note was that the entire left side of the airplane had panels that could be removed for ease of maintenance.