S2870-5 – Textron Aviation Cessna OEM Yoke Mount Autopilot Disengage Switch
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Overview
The Textron Aviation S2870-5 is a genuine OEM, flight-critical autopilot and trim disconnect switch, engineered specifically for mounting on the control yoke of a wide variety of Cessna aircraft. This is not a generic switch; it is a purpose-built, ergonomic component designed to provide the pilot with an immediate and unambiguous means of disengaging the autopilot and electric trim systems. Its prominent red color and positive tactile feedback are essential safety features, ensuring the pilot can instantly take manual control of the aircraft during any phase of flight.
Key Features
Instant Autopilot & Trim Disconnect: Its sole function is to provide an immediate and positive interruption of power to the autopilot and electric trim servos. This is the primary method for the pilot to manually override and disengage the automated systems in a non-normal situation or during a normal transition to manual flight.
Ergonomic Yoke-Mount Design: The switch housing is contoured to fit comfortably against the pilot's thumb and is designed for secure attachment to the control yoke, placing this critical function in a natural, easy-to-reach position on the primary flight control.
Positive Tactile Feedback: The switch mechanism is engineered to provide a distinct, audible and tactile "click" upon actuation. This gives the pilot positive confirmation that the disconnect command has been initiated.
High-Reliability Construction: Features a high-quality, long-life internal switch designed to withstand tens of thousands of actuation cycles, ensuring its reliability. The housing is molded from a high-impact, durable red polymer for instant visual identification.
Genuine Textron OEM Part: As a genuine factory component, it guarantees a perfect fit on the Cessna yoke, correct electrical characteristics, and the proven reliability required for a flight-critical safety switch.
Technical Specifications
Part Number: S2870-5
Component Type: Yoke-Mounted Autopilot / Trim Disconnect Switch
Switch Function: Momentary
Material: High-Impact Red Polymer Housing with high-reliability internal switch.
Color: Red
Certification: FAA Production Approval
Aircraft Compatibility
The S2870-5 is the standard factory-installed autopilot disconnect switch on thousands of Cessna's most popular single and multi-engine aircraft. It is imperative to consult the specific aircraft's Illustrated Parts Catalog (IPC) for final verification of the correct dash number for your aircraft's serial number.
Common Aircraft Models:
Cessna 172 Skyhawk (with autopilot)
Cessna 177RG Cardinal
Cessna 182 Skylane (with autopilot)
Cessna 206 Stationair
Cessna 210 Centurion
Cessna 310, 337, 340, 414, 421
Applications
The S2870-5 is the primary pilot interface for taking manual control from the automation system:
Normal Operations: Used for routine disengagement of the autopilot during approaches or when transitioning to manual flight.
Emergency Override: The immediate-action control for disengaging the autopilot in the event of a malfunction, trim runaway, or any other unexpected aircraft attitude.
System Testing: Used by pilots and mechanics to functionally test the autopilot disconnect and warning systems during pre-flight and maintenance checks.
Why Choose S2870-5?
The ability to instantly and reliably disconnect the autopilot is a fundamental safety-of-flight requirement. A failed or intermittent disconnect switch can have catastrophic consequences. The Textron Aviation S2870-5 is the genuine OEM component designed for this demanding, high-cycle, and flight-critical application. Using the factory-specified part ensures the switch has the correct ergonomic feel and the certified reliability needed for this essential safety function. There is no substitute for the quality and airworthiness assurance of a genuine OEM part.
Order Your S2870-5 Autopilot Disconnect Switch Now
Ensure the integrity of your aircraft's flight automation safety systems with a genuine Textron Aviation OEM component. Visit Airparts.aero to order your S2870-5 autopilot disconnect switch today.
The S2870-5 switch is a critical human-machine interface designed for reflexive, immediate action. When the pilot presses the red button, it typically opens a circuit to the autopilot computer or servo clutches, immediately releasing their authority over the control surfaces. Simultaneously, it often closes a separate circuit that interrupts power to the electric trim motor, preventing a trim runaway condition. Its position on the outboard horn of the pilot's yoke is an industry-standard ergonomic choice, allowing the pilot to disengage the automation with the same hand that is flying the aircraft, ensuring a seamless and safe transfer of control.
Note: This is a flight-critical electrical component. Installation and wiring must be performed by a certified A&P mechanic or avionics technician in accordance with the current Textron Aviation (Cessna) maintenance manual. A full functional check of the autopilot and trim disconnect systems is mandatory after installation.