Meet Airbus H125
The H125 belongs to the AS350 lineage developed by Aérospatiale and continued through Eurocopter into Airbus Helicopters. Its broad cabin and single turbine support work ranging from passenger transport to observation and external-load operations.
The names reflect both the aircraft's history and its markets: Écureuil means squirrel, while AStar is familiar in North America. Older AS350 versions and the modern H125 should not be assumed to have identical equipment. The simulator entries below keep bundled aircraft and independent developers' interpretations distinct.
In your simulator
Systems, equipment and documentation for each developer’s aircraft.
H125
Microsoft Flight Simulator
Edition / package Standard
H125
CowanSim
Stability assistance and upper modes do different jobs
Cowan's HeloSAS uses small cyclic corrections to stabilise the helicopter. The manual distinguishes force-trim behaviour with SAS engaged and disengaged, and explains the difference between spring-centred and non-centring controls. Its upper autopilot modes become selectable above 44 knots in the documented implementation. Stability assistance, rotor-speed governing and route-following modes are separate systems.
CowanSim · SAS Autopilot Manual ↗Archived document; installed package version not observed · PDF pp.1-2
Cyclic trim and control assignments
The MSFS H125 guide documents longitudinal and lateral rotor trim together with a separate trim-reset binding. It also records a discrepancy between the hydraulic switch's cockpit operation and its hardware binding in this manual version. The developer's mapping pages are the appropriate reference when connecting external controls.
CowanSim · CowanSim H125 user manual · MSFS ↗Archived document; installed package version not observed · PDF pp.4,7
H125
CowanSim
Disconnecting an upper mode can leave SAS active
The X-Plane SAS guide distinguishes trim release, upper-mode disconnection and the underlying stability system. Its published force-trim-release and autopilot-disconnect commands have different effects: disconnecting the upper modes can preserve SAS. The documented 44-knot threshold applies to mode availability, not to a universal helicopter operating limit.
CowanSim · SAS Manual ↗Archived X-Plane SAS/AP manual · PDF pp.1-4
Separate controls for trim, hydraulics and mission equipment
The X-Plane H125 manual identifies cyclic trim, force-trim release and autopilot-off controls. It also describes the collective-mounted hydraulic switch and separate sling-load and servo-test controls. These functions have distinct purposes even when a desktop setup assigns several of them to buttons on the same device.
CowanSim · User Manual ↗Cowan H125 guide copyright 2022 · PDF pp.8,21-24
Manuals & resources
Read the original documentation from the people who created it. Manuals open on their publisher’s website.
Manual
Microsoft Flight Simulator aircraft manualsMicrosoft / aircraft developers CowanSim H125 user manual · MSFSCowanSim CowanSim manualsCowanSim SAS Autopilot ManualCowanSim SAS ManualCowanSim User ManualCowanSim X-Plane aircraft and avionics manualsLaminar ResearchAircraft background
Eurocopter AS350 ÉcureuilWikipedia contributors · Research background · Wikipedia revision 1373884153 · retrieved 2026-09-12Resource
MSFS 2024 FAQ and edition aircraft inventoryMicrosoftDocumented interfaces
Source-documented identifiers. Documentation does not prove that every add-on populates a value correctly.
SAS/force_trim_release
Hold/release FTR; SAS engagement gesture described separately.
- Units
- none
- Access
- execute command
shared Cowan XP SAS manual; installed package must supply command
CowanSim · PDF p4; shared SAS command list ↗SAS/autopilot_disconnect
Disconnect upper modes; SAS behavior follows the manual.
- Units
- none
- Access
- execute command
shared Cowan XP SAS manual; installed package must supply command
CowanSim · PDF p4; shared SAS command list ↗Something missing or a source that needs attention?
Suggest a correction ↗
