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1133210-5 – Textron Aviation OEM Evaporator Blower Motor
Available now on the Airparts.aero Marketplace.
Overview
The Textron Aviation 1133210-5 is a genuine OEM, high-reliability evaporator blower motor for the vapor-cycle air conditioning systems on a wide range of Cessna Citation business jets. This is not a simple fan motor; it is a precision-engineered, flight-certified component whose function is critical for cabin cooling and passenger comfort. The motor drives the squirrel-cage blower that provides forced convection, moving a high volume of cabin air across the frigid coils of the evaporator. This process is essential for transferring heat from the cabin air into the refrigerant, thereby cooling the aircraft.
This unit utilizes advanced Brushless DC (BLDC) motor technology, representing a significant leap in reliability and efficiency over older brushed-motor designs. The brushless design eliminates the most common failure point in DC motors—the carbon brushes—resulting in an exceptionally long, maintenance-free service life. With its integrated electronic controller, low electromagnetic interference (EMI), and quiet operation, the 1133210-5 is the definitive OEM component for ensuring the performance and reliability of the Citation's Environmental Control System (ECS).
Key Features
Genuine Textron Aviation OEM Part: Guarantees perfect fit, form, and function, ensuring seamless integration with the Citation's air conditioning system and wiring.
Advanced Brushless DC (BLDC) Motor Technology: Eliminates carbon brushes, the primary wear item in conventional motors, for an exceptionally long service life (often rated for tens of thousands of hours).
High Reliability & Durability: The solid-state design and high-precision sealed bearings make the motor virtually immune to the effects of vibration and provide maintenance-free operation.
Superior Efficiency & Low Current Draw: BLDC motors are significantly more efficient than their brushed counterparts, reducing the electrical load on the aircraft's generators.
Quiet, Low-Vibration Operation: The smooth, electronically commutated rotation provides a significant reduction in operational noise and vibration, enhancing cabin comfort.
Low EMI/RFI Signature: The absence of arcing brushes results in very low electromagnetic interference, ensuring no disruption to sensitive avionics.
Technical Specifications
Part Number: 1133210-5
Component Type: Air Conditioning Evaporator Blower Motor
OEM Manufacturer: Textron Aviation (Cessna)
Voltage Rating: 28 VDC
Motor Technology: Brushless DC (BLDC) with integrated electronic controller.
Housing Material: Black Anodized Aluminum Alloy.
Bearings: High-Precision, Sealed Ball Bearings.
Aircraft Compatibility
This evaporator blower motor is the specified OEM part for a wide range of Cessna Citation business jets, including but not limited to:
Citation 525 Series: CJ, CJ1, CJ1+, M2
Citation 550 Series: Citation II, S/II, Bravo
Citation 560 Series: Citation V, Ultra, Encore, Encore+
Citation 650 Series: Citation III, VI, VII
Note: This compatibility list is for general reference. The aircraft's specific Illustrated Parts Catalog (IPC) is the sole and final authority for determining part applicability.
Applications
Cabin Air Conditioning: Provides the motive force for the evaporator blower, circulating cabin air over the evaporator coils to provide cooling.
Environmental Control System (ECS): A key component in the vapor-cycle air conditioning portion of the aircraft's ECS.
Why Choose 1133210-5?
A functioning air conditioning system is critical for passenger comfort and can be a dispatch-critical item. A failed blower motor renders the entire A/C system inoperative. The 1133210-5 is the genuine Textron OEM component, featuring superior Brushless DC technology that is engineered for the long-haul reliability expected in a business jet. Choosing the OEM part guarantees the correct performance, the lowest possible noise signature, and a service life that far exceeds any lesser-quality or brushed-motor alternative. It eliminates the risk of premature failure and the associated maintenance costs and aircraft downtime.
The core of the 1133210-5 motor's superior reliability is the principle of electronic commutation. Unlike a brushed motor that relies on a physical, wearing connection to switch the rotor's polarity, a Brushless DC (BLDC) motor uses solid-state electronics. Hall-effect sensors embedded in the stator detect the precise rotational position of the permanent-magnet rotor. This position data is fed to an integrated microcontroller which then energizes the appropriate stator winding phases in a precise sequence via a solid-state H-bridge. This creates a rotating magnetic field that the rotor continuously follows. This process is frictionless, arc-free, and wear-free. By replacing a mechanical, wearing component (the brush/commutator assembly) with a durable, solid-state electronic system, the motor's service life is extended from a few thousand hours to tens of thousands of hours, limited only by the lifespan of its high-precision ball bearings.
Note: The 1133210-5 is a critical Environmental Control System component. Installation must be performed by a certified A&P mechanic in accordance with the Textron Aviation maintenance manual for the specific Citation model. Care must be taken during the transfer of the blower wheel (squirrel cage) from the old motor to the new unit to ensure it is not damaged and is properly balanced and secured. A functional check of the A/C system should be performed post-installation.
Documentation
No public-facing OEM specification sheet was located for this specific part number. All authoritative technical data, installation procedures, and testing criteria are contained within the official Textron Aviation Maintenance Manual and Illustrated Parts Catalog (IPC) for the applicable aircraft models.
