The Boeing 727-300 is a three-engine single-aisle civil airliner developed by Boeing, which is owned by DHL(All buttons are basically useless)Please note! The operation of this aircraft at low speed is very good, so that after the main wheel is grounded, the nose of the aircraft will still rise 70 or even 80 degrees, which will cause the tail to rub the phenomenon, the best way is to land at high speed, and the nose should not be pulled too high, in order to restrain this phenomenon, I have weighted several cylinders in front of the nose, in order to offset this downward moment, I set the angle of the horizontal tail to -9 degrees, so it will cause the nose of the aircraft to lift abnormally at high speed, and the nose will fall abnormally at low speed