Hi 'what bolt'. .I don't wish to get too far off topic, but could you clarify "lift dumper at the back" please? I thought that the lift dump on the 146 is primarily a combination of large flaps and spoilers, over and under the main wing surfaces, that can open extra wide to dump the lift on touch down. The rear petal shaped airbrake would provide additional drag, but not directly reduce (dump) lift?
I also believe that the ATP is not able to land on a flooded (by ICAO definition) Runway, when many other types continue to operate.
[ 25 January 2002: Message edited by: spekesoftly ]</p>