How it's Made.? Bombardier CRJ 900 I short video

The CRJ900 is a stretched 76–90 seat version of the CRJ700. The airplane is loosely based on the CRJ200 series with a few major improvements. The first CRJ900 (C-FRJX) was modified from the prototype CRJ700 by adding longer fuselage plugs fore and aft of the wings. It was later converted into the prototype CRJ1000 by replacing the fuselage plugs with longer plugs. The CRJ900 competes with the Embraer 175, and is more efficient per seat-mile, according to Bombardier. Mesa Air Group was the launch customer for the CRJ900 painted in America West livery. The FAA Type Certificate designation of the CRJ900 is the CL-600-2D24.

The wing is wider with added leading edge slats, the tail is redesigned with more span and anhedral. The cabin floor has been lowered 2 inches which gains outward visibility from the windows in the cabin as the windows become closer to eye level height. Its maximum ground takeoff weight is 84,500 pounds.

The aircraft features two GE CF34-8C5 engines, 59.4 kN (13,400 lbf) thrust with APR. The engines are controlled by FADEC digital engine control instead of control cables and a fuel control unit.

The environmental packs have a target temperature instead of a hot-cold knob. The cabin has a recirculation fan which aids in cooling and heating. The APU is a Honeywell RE220 unit