Update Log
VSKYLABS Test-Pilot: CT/4E Airtrainer
JetManHuss - VSKYLABS (c) 2026 All Rights Reserved.
XP12 - v3.1.0 (21st March 2026):
- VSKYLABS Cockpit-Builders Assignment Layer was implemented:
- Assign buttons, switches, levers, interactions via the X-Plane 12 assignment screen instead of the old convention 'sliders' assignment.
- Updated documentation structure:
- All project documentation transferred to the VSKYLABS CT/4E Airtrainer section in the VSKYLABS Aircraft Center.
- Updated included documentation.
- Removed Skunkcrafts updater:
- Product updates are no longer supported via Skuncrafts Updater.
- The most updated version of the product is available via the user-account at the store.
XP12 - v3.0.1 (13th May 2024):
Major Update - Aircraft Performance fine tuning:
- Propeller design tuneup to match the official Type Certificate data sheet for the CT/4E specs (Model CT/4E Airtrainer (Acrobatic Category). Approved 17/7/92.).
- Performance calibration to fall in line with the extended CT/4E performance charts:
- Overall drag calibration to hit target speeds with higher accuracy.
- Takeoff performance.
- Landing performance.
- Rate of climb.
- Range (power and speeds).
- Endurance.
- Engine output and settings.
- Fuel flow.
- Max allowable aileron input vs speed range (official figures) is now incorporated into the flight model.
- Bug fixes:
- Turn and Slip indicator XP12 dataref bug - fixed.
- Fuel-flow 'hump' when leaning the mixture at high pressure altitude was fixed.
- Engine data instrument arcs (red, yellow, green) are now accurate.
- Interaction:
- Autopilot A/P light (in S-TEC panel) now indicates the status of the master AP switch.
- Flight initiation includes now:
- If a flight is being restarted in-flight (when reloading an aircraft while it is already flying) - The rudder and aileron trims are set in 'flight mode', to allow comfortable flying initation.
- Stick HAT trim manipulators (the 3-d trim HAT switch) are now presented with arrows, for more intuitive operation with the mouse/touch controller).
XP12 - v3.0e (8th May 2024):
- Mixture leaning causing fuel-flow positive 'hump' during the initial leaning process was fixed.
- 3-d animated toe-brakes incorporate animation for the simple parking brakes assignment ('b' / 'v').
- Additionally, the 3-d toe-brakes (upper section of each 3-d rudder-pedal in the virtual cockpit) indicates 'brakes are on' by switching to red-color. This addition was added for non-VR flying, where the parking brake locking mechanism ('T' handle on the pedestal panel) may be overridden by the default parking brakes 'b' / 'v' assignments.
XP12 - v3.0c (7th May 2024):
- Added PM-4000 audio-box to allow com1/com2 transmission selection along with com1/com2/nav1/nav2 audio selection.
XP12 - v3.0a (7th May 2024):
- Minor tuneups - addresses none-toe brakes Joystick equipment:
- Reduced differential braking threshold sensitivity intended for increasing control during takeoff for users who are using twist-axis rudder equipment, with no toe-brakes (in this case, when exceeding a threshold, differential braking takes place, to allow use of brakes for steering, when there is no toe-brakes equipment).
- Idle RPM reduced from ~900 to ~800 RPM + Mildly reduced tire pressure, to allow more comfortable idle-rpm-taxi for users without toe-brakes equipment.
XP12 - v3.0 (6th May 2024):
(Major Update Release)
- Flight Dynamics:
- Inverted flight fuel-tank is now simulated (allows maximum 10 seconds of inverted flight/negative g).
- AEIO-540-L1B5 Engine tune-ups:
- Power tuneups including power gradients calibration.
- Fuel consumption curve update including cruise performance.
- Airfoils update.
- Graphics:
- PRB setup for interior and exterior models to fall in line with the latest X-Plane 12 rendering aspects.
- Various 3-d modeling enhancement for the interiors.
- Paint-kit update.
- Systems:
- 3-d HUD was added (optional feature).
- Sounds:
- New FMOD 2 sound pack.
- POH:
- Manual update rev.004.
- Added Lycoming O-540/I540 performance charts.
- Added 'Essentials' pdf file with assignments summary.
XP12 - v2.2a (15th Februery 2023):
- COM1/COM2/NAV1/NAV2/ADF1 radios are being initialized with 'audio selected' once the aircraft is being loaded.
- ADF Frequencies windows switch to be positioned properly (stby vs active freq).
XP12 - v2.2 (4th December 2022):
- Interior lighting system reset and retuned to comply with the modifiedX-Plane 12.00r1+ lighting engine.
- Tuneups for GNS/AP rack (PBR).
XP12 - v2.1 (23th November 2022):
- Updater software replaced - from STMA to SkunkCrafts.
XP12 - v2.0a (29th September 2022):
- Fix to strobe/beacon lights switches - UPPER for upper, LOWER for the lower light.
XP12 - v2.0 (beta) (Sept 2022):
- X-Plane 12 initial version release.
XP11 - v1.0f1 (1st December 2021):
- Fixed cockpit placard orientation - RH side Harness locking placard.
XP11 - v1.0f (7th November 2021):
- Landing gears internal engineering refinements (attachment points and other).
XP11 - v1.0e (4th July 2021):
- Refinement to prop design for more accurate power gradient vs airspeed ratio during cruise flight.
- Refinement to aircraft all-around drag aspects.
XP11 - v1.0c - (2nd July 2021):
- Minor post update release fixes:
- Updated internal element of the electrical system (related to autopilot functionality).
- Minor fix to instrument panel - artificial horizon and electrical compass.
- Updated manual POH instructions: More detailed instructions for using of the parking brakes system, More detailed instructions for rudder trim assignment.
XP11 - v1.0 (30th June 2021) - Initial Version Release.
