To all of you guys
YES. B737-200 HAS NOSEGEAR BYPASS SAFETY PIN, SHAPE "T". I'm working on; B737-200 (MetroJet) B737-300/400 (USAirways) DC-9 and MD-80 (also USAirways).F-100 (USAirways) For all those planes you need By-Pass Safety Pin!!! You dont need only for F-100 because in this kind of aircraft you have it next to communication ports with pilots (on the right side of the plane). There is little red switch, when you click that you will see red light on, it means that parking brakes are released and you are ready to connect towbar to the aircraft.
Navion - yes I'm working as a Airlines Ramp Agent at IAD. I'm not fake. Do I have to prove it? Ask me anything concerning my position, I will glad to answer.
PS- I'm working also on Prop-planes such as:B1900, SF-340, DHC-8, J31, (USAir Express, USAirways Express) it suck! No belt-loaders!!
BWIADCA - Nikon D100