E6B Flight Computer - TI-84 CE

A full-featured aviation E6B flight computer for the TI-84 Plus CE graphing calculator. Inspired by the ASA CX-3 feature set, this app covers everything from density altitude to weight and balance - right on your calculator.

Version 1.0 - By Andrew Sottile Digital logbook: log61.com

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Screenshots

Standard Theme	Night Theme	Daylight Theme

Wind Correction	Weight & Balance	Conversions

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Requirements

This app requires CalcPlex to run. CalcPlex is a launcher for the TI-84 Plus CE that allows running C programs.

If you have not set up CalcPlex yet, follow this tutorial first: https://calcplex.com/ti84plusce-jailbreak-tutorial/

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Installation

1. Set up CalcPlex on your calculator using the tutorial above.
2. Download the files from the Releases page:
   • E6B.8xp - launcher program
   • E6B.8xp.0.8xv - program data part 1
   • E6B.8xp.1.8xv - program data part 2
3. Transfer all three files to your TI-84 Plus CE using TI Connect CE.
4. On the calculator, press APPS, select CalcPlex, then select E6B.

All three files must be present on the calculator. The .8xv files are AppVars that store the program body (the app exceeds the 64 KB single-program limit).

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Features

1. Altitude

• Density Altitude
• Pressure Altitude
• DA from Pressure Altitude
• Cloud Base
• Standard Atmosphere lookup

2. Airspeed

• TAS from CAS/Altitude/Temp
• TAS from TAT (probe temperature, iterative Mach solve)
• Mach Number
• True Airspeed

3. Wind

• Wind Correction Angle & Ground Speed
• Find Wind (from HDG, TAS, GS, and course)
• Crosswind & Headwind components
• Ground Speed (distance/time)

4. Navigation

• Time/Speed/Distance
• Off-Course correction
• True/Magnetic heading conversion
• Holding Pattern entry type calculator (Direct / Teardrop / Parallel)

5. Fuel & ETA

• Fuel required
• Endurance
• ETA / Time en route
• Fuel flow

6. Weight & Balance

• Full multi-station W&B (Emp Wt, Fuel, Pilot, Co-Pilot, Pax 1/2, Bags, Cargo)
• Fuel toggle: AvGas or Jet-A (auto lb/gal conversion)
• Weight shift - new CG after moving an item
• Weight needed to shift CG by a desired amount

7. Conversions

• SM to/from NM
• inHg to/from mb
• Celsius to/from Fahrenheit

8. Theme

• Standard - dark blue cockpit style
• Night - green-on-black for dark cockpits
• Daylight - light background for bright conditions
• Theme is saved automatically and restored on next launch

9. About

• Credits and version info

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Controls

Key	Action
Up / Down	Navigate fields / menu items (hold for fast scroll)
ENTER	Select / begin editing a field
0-9 / . / (-)	Enter a value while editing
DEL	Backspace while editing
ENTER (while editing)	Confirm value
CLEAR	Cancel edit / go back / exit
ALPHA	Toggle context-sensitive help for current screen
MODE	Secondary actions (e.g. fuel type toggle in W&B)

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Building from Source

Requires CE Toolchain (CEdev) v14.2 or later.

git clone https://github.com/coolpilot904/e6b-ce
cd e6b-ce
make

Output files will be in the bin/ directory.

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About

Feature set based on the ASA CX-3 Flight Computer. Built with CE Toolchain (ez80-clang).

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Check out my digital pilot logbook at log61.com