SPA-4S Two or Four Place Intercoms
- FAA TSO approved.
- Pilot fail safe feature allows pilot to always hear radios.
- Use Satellite Radio, MP3 or CD players as audio source.
- Radio priority assures that ATC hears only the crew member transmitting.
- Installation hardware included, including jack kit & pre-wired harness.
Compact Stereo System
The SPA-4S is a 2 or 4 place voice activated intercom with inputs for stereo music. It is a compact system that allows it to fit in space critical panels. The SPA-4S uses the industry standard Sigtronics squelch, fast on slow off for hands free communication. The music will full mute during ATC communication and partial mute during intercom communication. When radio / intercom use is ended the music will gradually return to its previous volume.
Easy Upgrade
Each intercom comes complete with all necessary mounting hardware, jacks, and two 4-foot pre-wired harnesses. The SPA-4S only requires 1″ X 2.5″ of panel space, mounts horizontal or vertically, is 4″ deep, and weights 5.5 oz. The SPA-4S intercom can easily upgrade the SPA-400. The SPA-4S uses the same panel hole pattern and interface cable as the SPA-400. A second cable is provided for the music inputs and headphone outputs.
High Noise Environment N Series
The FAA TSO approved SPA-4SN is available for the high noise amateur built aircraft and helicopters. As with all of Sigtronics’ products, the SPA-4S / SPA-4SN are RFI and EMI immune. The SPA-4S intercom is constructed of high quality components and carries a five-year parts and labor warranty. The SPA-4S will operate on an input power of 11 VDC through 32 VDC. Maximum current drain 0.10 Amps.
At Aviation Spare Parts & Services LLC, we proudly offer international shipping to customers worldwide. Please review the following details regarding our shipping policies:
1. Processing Time
- Orders are processed within 2-5 business days after payment confirmation.
- Custom orders or specialized parts may require additional processing time.
- Customers will receive a tracking number once the order has been shipped.
2. Shipping Methods & Delivery Time
- We offer standard and expedited shipping options based on destination and package weight.
- Delivery times vary depending on the destination, but estimated shipping times are:
- Domestic (USA): 3-7 business days
- International: 7-21 business days (varies by country and customs clearance)
3. Shipping Costs & Taxes
- Shipping costs are calculated at checkout based on order weight, destination, and shipping method.
- International orders may be subject to customs duties, import taxes, and fees imposed by the destination country. Customers are responsible for these charges.
4. Lost, Delayed, or Damaged Shipments
- We are not responsible for delays caused by customs processing or unforeseen circumstances such as natural disasters.
- If your order is lost or arrives damaged, please contact us immediately with order details and supporting images (if applicable).
5. Restricted Items
- Some aviation spare parts may have shipping restrictions due to regulations and export controls. We will notify customers if any items in their order are affected.
6. Contact Us For any shipping inquiries, please reach out to us
