S2870-1 – Textron Aviation Cessna OEM Yoke Mount Push-To-Talk Switch
Available now on the Airparts.aero Marketplace.
Overview
The Textron Aviation S2870-1 is a genuine OEM, flight-critical Push-to-Talk (PTT) 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 a comfortable and reliable method of keying the aircraft's communication radios. Its durable construction and positive tactile feedback are essential for ensuring clear, crisp, and reliable voice transmissions to air traffic control and other aircraft, a fundamental requirement for flight safety.
Key Features
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 curved surface of the control yoke, placing the PTT function in a natural, easy-to-reach position.
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 radio has been keyed, preventing missed or partial transmissions.
High-Cycle Durability: Features a high-quality, long-life internal microswitch designed to withstand tens of thousands of actuation cycles, ensuring its reliability for the entire service life of the aircraft.
Durable Construction: The housing is molded from a high-impact, durable polymer designed to resist cracking, wear, and degradation from UV exposure and cockpit temperature changes.
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 primary flight control interface.
Technical Specifications
Part Number: S2870-1
Component Type: Yoke-Mounted Push-to-Talk (PTT) Switch
Switch Function: Momentary, Single-Pole, Single-Throw, Normally Open (SPST-NO)
Material: High-Impact Polymer Housing with high-reliability internal switch.
Color: Typically black or gray to match cockpit aesthetics.
Certification: FAA Production Approval
Aircraft Compatibility
The S2870-1 is the standard factory-installed PTT 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.
Common Aircraft Models:
Cessna 152
Cessna 172 Skyhawk
Cessna 177 Cardinal
Cessna 182 Skylane
Cessna 206 Stationair
Cessna 210 Centurion
Cessna 310, 337, 340, 414, 421
Applications
The S2870-1 is the primary human-machine interface for radio communications:
Radio Transmission: Its sole function is to close the keying circuit for the selected VHF communication radio, enabling the pilot to transmit their voice over the frequency.
Component Replacement: The primary component to replace when troubleshooting an inoperative or intermittent PTT function.
Avionics Upgrades & Restoration: An essential component for any panel upgrade or cockpit restoration to ensure a reliable and tactile PTT switch.
Why Choose S2870-1?
Clear and reliable communication is a cornerstone of aviation safety. A failed PTT switch can leave a pilot unable to respond to ATC or make critical position reports. The Textron Aviation S2870-1 is the genuine OEM component designed for this demanding, high-cycle application. Using the factory-specified part ensures the switch has the correct ergonomic feel and the certified reliability needed for a flight-critical function. There is no substitute for the quality and airworthiness assurance of a genuine OEM part.
Order Your S2870-1 PTT Switch Now
Ensure your radio transmissions are clear and reliable with a genuine Textron Aviation OEM component. Visit Airparts.aero to order your S2870-1 yoke mount PTT switch today.
The S2870-1 is a normally open (NO), momentary-action switch. In its resting state, the internal contacts are separated, and the microphone keying circuit is open. When the pilot depresses the button, it closes the contacts, completing the circuit to ground and signaling the selected COM radio to switch from receive to transmit mode. The ergonomic "saddle" shape of the housing is designed to be secured to the yoke with a strap or clamp, and its position is critical for allowing the pilot to key the microphone without relaxing their grip on the primary flight controls. This "hands-on" capability is essential, especially during high-workload phases of flight like approaches in instrument conditions.
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. Proper wire routing and strain relief are essential for a reliable installation.
Cessna Aircraft Service Bulletin [ Click Here ]
Alternate Part Numbers: 3593798
Product Overview
Press to test is available for the flight control and communication system, which energizes all related component to confirm readiness.
Used to test readiness for audio/mic.
**Cessna Aircraft Model 208 Caravan Illustrated Parts Catalog [ Click Here ]
- See Page 853, Figure 01, Item 1
- See Page 1247, Figure 03, Item 17, & 19
- See Page 1249, Figure 03, Item 77
- See Page 1253, Figure 05, Item 18, & -19