I work for a 135 company flying freight for UPS.  We don't have any agreements with any other companies as far as jumpseating is concerned, but I *think* that we have allowed other companies to jumpseat with us in the past, both 135 and 121.  My question is, would I be able to jumpseat on other airlines?  I'm relatively new to this topic, so I would appreicate any advice on how I might be able to do this.  I know it depends on what airline I try, but who would I talk to about this, the gate agent, Captain???  Do you call first or just show up?   
 
Thanks for all your help!
	
		
			
		
		
	
				
			 
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