<h4>Applications</h4><p><strong>APUs</strong>: Honeywell RE220 series (e.g., RE220[GJ], RE220[GX]).</p><p><strong>Aircraft</strong>: Bombardier Global Express 5000, 6000, 7000, 7500; Global Express variants. Used for APU cranking in onboard power generation for electrical, pneumatic, and environmental systems.<br><br></p><p>The 2704554-3 is a Honeywell starter motor designed for auxiliary power unit (APU) starting systems. This electric motor provides the initial torque to rotate the APU turbine shaft during startup, drawing power from the aircraft's battery or ground source (typically 28V DC, with output torque around 50-100 ft-lbs). It features a robust, brushless design for reduced maintenance, integrated overrunning clutch to disengage post-start, and thermal protection to prevent overheating. Weighing approximately 15-20 lbs, it's built with sealed bearings and corrosion-resistant housing for reliability in harsh environments (-55°C to +70°C).</p>