About Lex's Aircraft Fork - K2/SE
From Factorio Mod PortalMaintained Factorio 2.1 fork of Lexsus' Lex's Aircraft for Krastorio 2 / Space Exploration. Adds two combat aircraft and a transport aircraft with API fixes, K2/SE equipment integration, remote weapon selection and maintained localisations. Original mod by Lexsus.
Lex's Aircraft Fork - K2/SE
Maintained Factorio 2.1 fork of Lex's Aircraft by Lexsus, based on the later Lex's Aircraft - K2 Fix by Arstan.
The original mod provides three excellent VTOL aircraft:
- cargo aircraft
- light combat aircraft
- heavy combat aircraft
Special thanks to Lexsus for the fantastic original mod, artwork and aircraft design. This fork would not exist without his work.
About this fork
This version focuses on a stable and reliable Krastorio 2 + Space Exploration environment while preserving the gameplay and character of the original aircraft.
Version 1.4.0 has been ported to Factorio 2.1, reviewed against Lexsus' Factorio 2.1 version and checked against the Factorio API up to 2.1.23.
The release has also successfully passed the initial Factorio 2.1 startup test.
Main changes and improvements
- Factorio 2.1 compatibility
- runtime and prototype API cleanup for Factorio 2.1
- reviewed against the Factorio 2.1.23 API
- improved Krastorio 2 / Space Exploration equipment-grid compatibility
- K2 and SE equipment can be used much more consistently in the aircraft equipment grids
- restored Krastorio 2 Heavy Rocket Launcher support for the heavy combat aircraft
- improved compatibility with K2 Realistic Weapons
- heavy combat aircraft remains limited to a maximum of four onboard weapon systems
- manual onboard weapon selection
- onboard weapons can also be selected while using Space Exploration Remote View
- earlier access to the aircraft remote control
- improved remote-control handling for Factorio 2.1
- cannon shells no longer collide with units belonging to the same force
- improved targeting behavior of unmanned combat aircraft against enemies
- improved dual aircraft headlights
- complete German localisation
- additional prototype and runtime guards for better compatibility with larger modpacks
Heavy combat aircraft and K2
When Krastorio 2 is active, the heavy combat aircraft uses the intended K2 weapon integration instead of simply adding more and more weapon slots.
Depending on the active K2 settings, the aircraft can use:
- standard aircraft rockets
- cannon shells
- K2 Heavy Rockets
- K2 Anti-Materiel Rifle ammunition when K2 Realistic Weapons is enabled
The aircraft is intentionally kept at a maximum of four weapon systems.
Equipment compatibility
One of the main goals of this fork is better compatibility between the Lex aircraft equipment grids and equipment provided by:
- Krastorio 2
- Space Exploration
- compatible K2/SE equipment extensions
This brings the aircraft equipment behavior much closer to other heavily modded vehicles such as tanks and Spidertrons.
Design goal
The goal of this fork is not to redesign Lex's Aircraft.
Instead, it aims to preserve the original aircraft, artwork and gameplay while making them more comfortable, reliable and compatible with large K2/SE games.
Changes are therefore kept as targeted as possible and primarily focus on:
- compatibility
- API correctness
- usability
- stability
- K2/SE integration
Credits
Lexsus — original Lex's Aircraft, artwork and core implementation Arstan — Lex's Aircraft - K2 Fix, which provided the starting point for this fork
Original projects
Lex's Aircraft by Lexsus Lex's Aircraft - K2 Fix by Arstan
Highlights
From source dataFootprint
Rated a light load on a server.
License
Published under MIT.
Last update
Its author last shipped an update 11d ago.
Lex's Aircraft Fork - K2/SE on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Factorio servers. We download it from Factorio Mod Portal, place it, and restart the server.
- Server side
- Required on the server
- Server load
- light
- Smallest plan we suggest
- Factorio — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 1.4.0, released 2026-10-24
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 1.4.0 | 2026-10-24 | 2.1 | n/a |
| 1.3.7 | 2026-09-05 | 2.0 | n/a |
Dependencies
- Optional: [reserved]
- Optional: Spidertron Enhancements
- Optional: Spidertron Patrols
- Optional: AAI Programmable Structures
- Optional: AAI Programmable Vehicles
- Optional: Space Exploration
- Optional: Krastorio 2
- Optional: Krastorio 2 Spaced Out
- Incompatible with: Lex's Aircraft
- Incompatible with: Lex's Aircraft -K2 Fix
- Incompatible with: lex-aircraft-fixed-mosii2710 (factorio_portal, not in our catalogue)
Declared by the newest build that lists any. Required ones are installed with it on one-click installs.
Run Lex's Aircraft Fork - K2/SE on a Factorio server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogVehicles & ships
Cars, boats, aircraft, ships and other things to drive or fly.
Runs on your server
From source side supportFactorio Mod Portal lists Lex's Aircraft Fork - K2/SE as required on the server. Check its Factorio Mod Portal page to see whether players need it too.
Compatibility
- Game
- Factorio
- Runs on
- Serverrequired on the server
Verified at the source
- ✓Factorio Mod PortalOfficial listing, checked 2026-10-25Open ↗
- ✓AuthorMoSII2710, as published on Factorio Mod Portal
- ✓LicenseMITFree
