Bombardier CRJ700 APU - RE220 RJ

Bombardier CRJ700 APU - RE220 RJ

The Bombardier CRJ700 APU or Auxiliary Power Unit is the Honeywell RE220 RJ APU (Officially: RE220[RJ]). The CRJ700 APU was formerly known as the AlliedSignal RE220 RJ APU before the merger of AlliedSignal and Honeywell. Below are specifications for the APU.

Bombardier CRJ700 APU Dimensions (Honeywell RE220[RJ] APU Dimensions):
Weight (Includes Accessories): 238.0 lb (108.0 kg)
Exhaust Area: 95.0 in2 (613.1 cm2)
Inlet Area: 105.0 in2 (677.4 cm2)

Certified to start and operate at flight levels up to 43,000 feet.
Provides bleed air at 56 psi for main engine starting and environmental control.
45kW electrical power generator.


  • MIL-T-5624 (JP-4, JP-5 & JP-8)
  • ASTM D1655 (Jet A, A-1 &B)


  • MIL-L-7808, MIL-L23699

Output Pad(s):

  • Special Configuration for Direct Mounting of Oil-Cooled Generator

Output Pad Speed/Direction of Rotation:

  • 12,000 rpm/ccw (Facing Pad)

Rated EGT:

  • 1299F (703.8C)

Rotor Speed:

  • 45,585 rpm

Since there are a few different names for the Bombardier CRJ700, the APU (RE220 RJ) for the CRJ700 are also referred to as the Canadair CRJ700 APU - RE220 RJ, Canadair Regional Jet 700 APU - RE220 RJ and the Bombardier CL-600-2C10 APU - RE220 RJ.

Bombardier CRJ700 APU RE220 RJ Photo

Above Bombardier CRJ700 APU - RE220 RJ Photo from a Honeywell Product Specifications handout. Used under the Fair Use provision.