16 Dec 2017, 02:56
Patriot, it's been a long long time since I looked at this, but I believe the comment saberrider made about flaps not down above 370 kt and gear not down above 300 kt may be a little misleading. I could easily be wrong here, but I believe the alt flap is automatically scheduled between 300 kt (maybe?) and 370 kt. Meaning with alt flap down, below 300 kt the flaps will go full down, but as speed increases above 300, they will gradually retract until at 370, they are fully retracted. The full down flaps loads are ok at 370, but if the pilot chose to do a 9g turn at that time the wing torque loads would likely be excessive. Also the gear down limit speed is 300 kt, but it is not an automatic limit, it is a pilot observed limit. Limiting factor for gear down is of course the gear doors departing and probably causing serious damage to the airplane.