Garmin GTP 59 OAT Probe - P/N 011-00978-00

Outside Air Temperature Sensor for G5, G3X, GI 275 & GFC 500 Systems

The Garmin GTP 59 (011-00978-00) is a rugged resistive temperature device (RTD) probe delivering accurate outside air temperature data for true airspeed, density altitude, and performance calculations. External mount design with 3-wire interface (OAT Power Out + OAT High internally connected) integrates seamlessly with G5 EFI, G3X Touch, GI 275 MFD/EIS, and GFC 500 autopilot systems. Includes 10ft coiled pigtail for easy installation.

Key Specifications:

• Type: Resistive Temperature Device (RTD)

• Interface: 3-wire (OAT power/high connected internally)

• Cable: 10ft coiled pigtail

• Mounting: External skin mount

• Compatibility: G5, G3X, GI 275, GFC 500

• Operating Range: -55°C to +70°Caircraftspru

Primary Applications:

• G5 Electronic Flight Instrument OAT display

• G3X Touch density altitude/true airspeed

• GI 275 MFD/EIS temperature data

• GFC 500 performance calculations

Why AeroHP's GTP 59?

• Genuine Garmin OEM (authorized reseller)

• In-stock for immediate G5/G3X installs

• Part-145 installation service available

• Houston same-day shipping/pickup

Accurate OAT data is critical for safe flight planning and performance.