Description
Garmin GNC 420 GPS/COMM for sale
The Garmin GNC 420 GPS/COMM is a practical choice when you need reliable navigation and communication in one panel-mounted unit. Shop Garmin GNC 420 GPS/COMM equipment for aircraft upgrades or replacement needs. A used Garmin GNC 420 can be a cost-effective option for compatible installations. Order Garmin GNC 420 avionics when you need integrated GPS navigation and COM communication in a compact design.
The GNC 420 combines GPS navigation with a VHF communications radio. Its integrated design helps reduce panel space while providing essential flight-navigation functions. The unit features a clear color display and an intuitive control layout for straightforward operation.
Features
- Integrated GPS navigation and VHF COM radio
- Panel-mounted aviation avionics design
- Color LCD display
- Direct frequency entry and communication controls
- GPS-based navigation capabilities
- Compact unit for compatible aircraft installations
- Designed for IFR navigation applications when properly installed and approved
Specifications
- Product: Garmin GNC 420 GPS/COMM
- Type: GPS navigation and communications unit
- Function: GPS / VHF COM
- Installation: Panel-mounted
- Display: Color LCD
- Application: General aviation avionics
- Condition: Availability may include used or refurbished units depending on stock
Check the unit configuration, installation requirements, software status, and aircraft compatibility before purchase. Professional installation and applicable aviation approvals should be confirmed for your aircraft.








Michael Rollins –
I ordered this Garmin GNC 420 GPS/COMM from Aero Parts Market after looking for a suitable replacement unit for my aircraft. The ordering process was straightforward, and the unit arrived securely packaged and in the condition described.
I bought this GNC 420 specifically because I wanted the combined GPS navigation and COMM functionality without having to source separate equipment. After receiving it and having everything checked for installation, the unit performed as expected. The display was clear, the controls responded properly, and the communication functions worked well.
What I appreciated most was that the product matched the description and there were no unpleasant surprises when it arrived. Aero Parts Market also kept the transaction simple and professional.
Overall, I’m very satisfied with my purchase and would order from Aero Parts Market again when I need another avionics component.