This discussion is such BS. The airplane has the ability to change AB setting during roll out. No, it is not described in the FCOM. Neither is the use of the lights!! Airmanship comes into play!! When transitioning from AB to manual braking often times you have to increase pressure on the pedals beyond the braking pressure being applied by the AB system giving an uncomfortable jolt in braking when transitioning!! I find it much more comfortable to apply brake pressure just before the point where the AB system kicks off and then asking the PM to select AB off, this gives a much smoother transition to manual braking!! I have on occasion asked the PM to increase the brake setting to a higher setting to make an exit. Again this is usually a smoother transition than applying manual brake.!!
the notion that you could inadvertently select RTO is absolute nonsense!! The RTO mode won’t arm unless speed is less than 60kts and then will only engage with speed above 90kts! How is this going to happen during landing!!
Yes, I have spent the first half of my career flying airplanes without AB and I do now how to brake without AB. However, the system is there, use it! And NO, I don’t change it myself!! I simply ask the PM to change it “set autobrake off” while looking outside!! DUH!!
And yes, I have used AB max as well! granted, probably 3 or for times, but flying a heavy 900 sometimes that’s what needed! Shortest runways I fly to are ABZ and AMS rwy22 under stormy conditions. AB 3 won’t be enough with the 15% increase( it is there for a reason!). Simple PA to the PAX, ” due to WX conditions/ short runway we will be landing on today we will use a higher braking setting, please make sure that your seatbelts are securely fastened, please don’t be alarmed, it is normal under the circumstances to guarantee maximum safety”, done!!!!
some of the comments I read here, really, are you that insecure about your flying skills that you have to constantly propagate about manual skills versus using the automatics the manufacturer build into the airplane?