Garmin GTX 327 Mode C Transponder – Excellent Condition | PN: 011-00490-00

Garmin GTX Transponder. Upgrade your aircraft’s avionics with the Garmin GTX 327, a highly regarded Mode C transponder

known for its exceptional reliability, solid-state efficiency, and fast, accurate altitude reporting. Trusted by general aviation

pilots, avionics installers, and maintenance professionals, the GTX 327 remains one of Garmin’s most dependable legacy

transponders, offering a powerful combination of performance, clarity, and long-term durability.

Designed with a bright, sharp digital display, the GTX 327 ensures excellent visibility in daylight, low-light, and night operations.

Its intuitive control interface reduces cockpit workload, allowing pilots to make quick adjustments without distraction. The internal

processing speed enables rapid replies to ATC radar interrogations, ensuring precise altitude encoding and reliable

communication in busy airspace.

This unit comes in excellent working condition and includes the original Garmin mounting tray (P/N 115-00285-00),

making installation smoother and reducing downtime during avionics upgrades or replacements. Its wide voltage

compatibility—supporting 11 to 33 VDC systems—allows seamless integration into a broad variety of certified aircraft, from

single-engine piston trainers to light twins and complex high-performance aircraft.

Garmin GTX Transponder

Key Specifications

Model: Garmin GTX 327
Part Number: 011-00490-00
Voltage Range: 11–33 VDC
Certifications:
- TSO-C74c, Class 1A
- JTSO-C74c, Class 1A
FCC ID: IPH-0037600

Included Components

Garmin GTX 327 Transponder Unit
Garmin Mounting Tray (P/N 115-00285-00)

Why Pilots Choose the Garmin GTX 327

Solid-state reliability: No moving parts means fewer maintenance issues and long service life.
Fast altitude reporting: Ensures accurate, timely Mode C data for ATC radar services.
Crisp, high-contrast display: Easy to read in all cockpit lighting conditions.
Lightweight, efficient design: Reduces electrical load and heat generation.
Proven Garmin performance: A highly trusted unit used worldwide across general aviation fleets.

This Garmin GTX 327 is a smart, dependable choice for aircraft owners seeking a reliable Mode C transponder that offers exceptional clarity, low maintenance, and seamless integration. Clean, fully functional, and installation-ready, it remains one of the most respected and enduring transponder solutions in modern general aviation.