Hello again, during a cockpit visit a while back on an AA 757, I noticed the pilots performing the before start checklist. The captain performed a Radar and TCAS check, I believe the copilot reached a switch on the overhead panel but I

"I believe the copilot reached a switch on the overhead panel but I

thats weired. well we test our tcas the first flight of the day. our tcas is in combo with our iff and mode 3 on the center pedastal.Kc-10 rider

I know this is the 767 forum, but at FedEx, on the 727, the TCAS/ATC test button is on the overhead panel. This test is done twice before each flight. The MX guys and then the flight crew.