A complete reference for your Garmin GTN 750Xi — GPS, NAV, COM, and the brain of your nav stack. Five tabs: overview, the home screen, every key feature, real flight scenarios, and quick reference.
What you're working with
The GTN 750Xi is a touchscreen GPS/NAV/COM that combines three radios and a moving-map navigator into one box.
It's the brain of your nav stack. Everything that involves where you are, where you're going, and who you're talking to on COM1 happens here.
What it actually contains
WAAS GPS — your primary position source. Approach-certified.
NAV radio — VOR and ILS reception (NAV1)
COM radio — voice communication (COM1)
Moving map — sectional and approach charts, weather, traffic overlays
Procedure library — every published SID, STAR, and approach in the database
Charts library — geo-referenced approach plates and airport diagrams
The three things you'll do most
1 — Direct-To
Direct-To anywhere. Press the magenta D→ button, type an identifier, hit Enter, Activate. Magenta line draws to your destination. The single most-used GTN function.
2 — Build a flight plan
Multi-waypoint route entry on the touchscreen, or import from ForeFlight via the GTX 345R Bluetooth. Activate it and the autopilot can follow it.
3 — Load an approach
From the procedure library, pick your approach type (RNAV, ILS, VOR), select transition, activate. Autopilot in APR mode flies it down to minimums.
How you'll interact with it
Your GTN 750Xi is 100% touchscreen for navigation but has physical bezel buttons for the most-used functions:
HOME — always takes you back to the seven-tile home screen
D→ (Direct-To) — magenta button, the fastest way to go anywhere
MENU — context-sensitive menus per screen
BACK — back up one level
Outer knob — scrolls lists, zoom level on map
Inner knob — fine adjustment, character entry
The home screen
Press HOME from anywhere to return here. Tap any tile to jump to that function. Tap a tile in the diagram below to read about it.
GTN 750Xi · Home Screen
COM
122.70
134.02
XPDR
1200 ALT
NAV
111.70
112.80
🗺
Map
✈
Flight Plan
⤵
Procedures
📍
Nearest
📌
Waypoint Info
📄
Charts
⚠
Traffic
☁
Weather
⚙
Utilities
Illustration of the home screen layout. Tile arrangement may vary slightly with software version.
Every feature, explained
Tap a tile on the home screen (previous tab) to jump here. Each entry covers what it does, when to use it, and the exact button sequence.
Real-flight scenarios
Common GTN tasks, step by step. Practice each in the free Garmin PC Trainer before using them in the airplane.
Quick reference
In-flight cheat sheet.
Direct-To anywhere — the fastest possible navigation
1.
Press D→ (magenta bezel button)
2.
Type identifier on keyboard (airport, VOR, fix, GPS waypoint)
3.
Tap the result that matches
4.
Tap Activate
RESULT
Magenta line draws to destination. Active leg in flight plan is now Direct-To.
Build a basic flight plan
1.
HOME → tap Flight Plan
2.
Menu → Delete Flight Plan (if old one loaded)
3.
Tap "Add Waypoint" → type identifier → Enter
4.
Repeat for each waypoint in order
5.
Menu → Activate
Frequency lookup and tune
1.
In Flight Plan, tap the airport name
2.
Tap FREQ
3.
Tap the frequency you want (e.g., CTAF, AWOS, Tower)
4.
Choose: Load to COM standby, NAV standby, or transmit
5.
Flip-flop at COM bar at top of GTN to make active
Nearest airport (emergency or diversion)
1.
Press HOME → tap Nearest
2.
Tap Airport (or VOR, fix, intersection)
3.
List sorted by distance — tap to select
4.
D→ to navigate immediately, or load to flight plan