What's New

Stay up to date with the latest features, improvements, bug fixes, and internal development of First Officer Checklist.
Releases are listed in reverse chronological order, with the most recent first.

v0.13.0.0 - Public Release

Release Date: 2026-06-02

New Features

  • Added engine starter control command for simulator interaction.
  • Added fallback system for neural audio generation when replies or audio files are missing.

Command System & AI Improvements

  • Improved command recognition, increasing robustness and reducing false positive.
  • Fixed and refined command confirmation flow during checklist execution.
  • Improved handling of FO responses and state transitions.

Aircraft & Flight Controls

  • Fixed flap continuous movement, replacing unstable dataref handling with command-based control.
  • Improved handling of flap step size and position safety checks.

Architecture & Code Refactoring

  • Removed legacy code, simplifying architecture.
  • Improved machine state, microphone state handling, logging system, and general threading stability.

Stability & Bug Fixes

  • Fixed IOException handling issues.
  • Added protections for missing or undefined flap configuration values.
  • General stability improvements and internal cleanup across multiple subsystems.
  • Added checklists logging to website for remote tracking and analysis.

v0.12.1.0 - Internal Release

Release Date: 2026-04-19

  • General code improvement

v0.12.0.0 - Public Release

Release Date: 2026-03-05

New Features

  • Added update check system that notifies the user when a new version is available.

Checklist & Aircraft Folder Improvements

  • Checklist files must now be placed in subfolders inside the main checklist\ folder that identify the aircraft.
    • Example: checklist\Boeing 737-800X
    • For X-Plane 12, the subfolder name must match exactly the aircraft name as it appears in the log.
    • For other simulators, the subfolder name can be chosen freely; however, the AIRCRAFT_NAME option in settings.ini must match the aircraft subfolder name to enable proper checklist identification and management.

Architecture & Internal Changes

  • Neural checklist voices are now cached and generated only when needed, reducing unnecessary regeneration and improving performance.
  • Application startup and code flow reorganized for stability.
  • Cleanup and exit procedures improved.

General Improvements

  • First Officer now replies "Okay" when a valid command is received.
  • "Stop checklist" command now provides a clear reply if no checklist is running: "We're not performing a checklist".
  • Bug fix: prevent the app from replying "Checklist completed" when the checklist file is empty or not found.
  • Minor internal optimizations, bug fixes, and stability refinements.

v0.11.1.0 - Public Release

Release Date: 2026-03-03

New Features

  • Added new voice command: "repeat last checklist line"

    • Integrated into the Machine Learning model for improved recognition accuracy
    • Available during active checklist sessions to repeat the most recent checklist item

  • Added unit of measure to the following information commands:

    • "tell me ground speed"
    • "tell me elevation"

  • Introduced WEB_SERVER_PORT option in settings.ini for configurable web server port assignment

Aircraft Support Improvements

  • Extended flap command support:
    • "tell me flap position" and "set flap to …" now support Boeing 737-800X (Zibo Mod), in addition to LevelUp V2
    • Added support for "tell me flap position" on Cessna 172 SP Skyhawk - 180HP

Architecture & Internal Changes

  • Updated state machine logic to align with the new audio management flow

General Improvements

  • Minor internal optimizations and stability refinements related to the new command and audio flow

v0.11.0.0 - Public Release

Release Date: 2026-02-27

  • Neural Voices fully integrated; legacy TTS engine removed
  • Machine Learning module introduced to improve command recognition accuracy and reduce false detections
  • Major codebase refactoring and state machine redesign for improved robustness and maintainability
  • Expanded voice command set: aircraft systems are now supported (full list available here)
  • Checklist execution logic improvements:
    • Checklists must now be invoked using the keyword "Read" instead of "Call" (e.g. "Read power and safety checklist")
    • Commands such as "check" and "set" are ignored when no checklist session is active
    • Simplified checklist syntax and line parsing logic
  • Offline audio waveform generation for faster voice playback
  • General bug fixes, logging enhancements, and performance optimizations

v0.10.0.0 - Internal Release

Release Date: 2026-02-15

  • Internal testing of preliminary aircraft systems control for X-Plane
  • Focus on logging, debugging, and testing command recognition accuracy
  • Initial internal research conducted on Neural Voices in preparation for future integration

v0.9.0.1 - First Public Release

Release Date: 2026-01-30

  • Initial public release of First Officer Checklist
  • Voice-driven checklist execution using text-to-speech (TTS)
  • Continuous dialogue between Captain and First Officer (spoken confirmations and responses)
  • Works with all supported flight simulators for executing checklists
  • Basic voice command recognition for checklist steps
  • Fully customizable checklist files