Silverlit Boeing 737 Ducted Fan Jet Airliner RC Airplane. The impressive Licensed Boeing 737 Airliner is supplied almost ready-to-fly and made of tough expanded Polypropylene foam. This innovative RC Airplane incorporates two powerful wing mounted electric ducted fan jet motors, is inherently stable and easy to fly, and capable of fantastic flights of five minutes or more outdoors in calm conditions. Featuring two channel digital proportional radio control, operating on 27 MHz bands A, B and C, the Boeing 737 may be turned to the left or right using differential thrust, whilst conventional throttle control enables climb or descent.