I offend wondered why when I taxied out from the gate that it did not seem to take much throttle to get the 737 to move but when on the runway( now I turn on Auto brake) I would advance upto 40%, hardly move then once I had advanced to say 50% plus she would start to move. I discovered that setting the Autobrake to RTO puts the brakes into action. According to my 737 Checklist Autobrakes the be set to RTO during the Preflight Proceedure. So is the Autobrake supposed to apply brake when engaged on the ground? If there is something I'm not doing or should be doing please let me know.

As you can I'm not one to always follow a checklist. I must work on this

Thanks in advance.

Brett Nicholls

 

Sorry if I have missed this somewhere else

Setting the autobrake to RTO shouldn't effect anything unless you retard the throttles above 80 knots to reject a takeoff.