Start here
A few places to begin, from the aircraft’s story to the people who fly it.
Aircraft and configuration
Restauravia's MS.733 Alcyon has a 240 hp piston engine, retractable landing gear and flap settings of 16 and 32 degrees. The cockpit combines an airspeed indicator in knots, an altimeter in feet and a vertical-speed indicator in hectometres per minute.
Morane-Saulnier MS.733 Alcyon
restauravia.fr · Read more ↗Meet Morane-Saulnier MS.733 Alcyon
Restauravia's MS.733 Alcyon has a 240 hp piston engine, retractable landing gear and flap settings of 16 and 32 degrees. The cockpit combines an airspeed indicator in knots, an altimeter in feet and a vertical-speed indicator in hectometres per minute.
History & design
From prototypes to the Alcyon
The Alcyon followed a sequence of MS.730, MS.731 and MS.732 prototypes with different engines and landing-gear arrangements. The MS.733 combined the Potez engine with a revised retracting undercarriage and first flew on 16 April 1951. Ailes Anciennes Toulouse records five pre-series machines followed by two hundred production aircraft.
Ailes Anciennes Toulouse · Morane Saulnier MS733 Alcyon ↗Preservation association’s MS.733 development history
A trainer with three places
The instructor and pupil sat alongside one another, with a third place behind for an observer. Military training service was followed by civilian professional-pilot training at centres including Saint-Yan and Challes-les-Eaux. The association dates the military training period to 1963 and the later civil training use to 1978.
Ailes Anciennes Toulouse · Morane Saulnier MS733 Alcyon ↗MS.733 training roles and cabin arrangement
Systems & details
Precise controls, modest power
Ailes Anciennes Toulouse describes the Alcyon as pleasant and precise to fly, but underpowered. Its account connects those limits with the difficulty of adapting it to observation and attack work in hot conditions in Algeria. This is the association’s qualitative assessment of the aircraft, not a measured force-feedback calibration.
In your simulator
No released simulator product is listed for this aircraft in the developers reviewed. Announced products are excluded.
Manuals & resources
Find your next read
Choose a topic for a short introduction and a link to the original source. Simulator references identify the developer and edition they cover.
Simulator documentation
Controls and equipmentMorane-Saulnier MS.733 Alcyon
The manual identifies pitch trim and labels the chocks, pitot covers and stick lock as visual accessories. Its flap-speed table contains conflicting values, so those figures are not combined into a single limit.
MS.733 English manual · pages 3–6
restauravia.fr · Read the source ↗Read the original documentation from the people who created it. Manuals open on their publisher’s website.
Simulator documentation
Morane-Saulnier MS.733 Alcyon — simulator documentationrestauravia.fr · MS.733 English manual · pages 3–6Aircraft history
Morane Saulnier MS733 AlcyonAiles Anciennes Toulouse · Reviewed aircraft history and characteristics; archived 2026-10-12Built-in force-feedback profiles
Read the documentary basis, editable starting settings and remaining questions for the aircraft you fly. Each explanation refers to the exact profile revision shown.
Catalogue programme-20261011-v3 · 1 profile choice
Restauravia Morane-Saulnier MS.733 Alcyon
Restauravia · Free and Pro · Revision 2 · Inherited starting point
MSFS 2020 · MSFS 2024
A piston trainer represented with retractable gear and two flap settings.
Restauravia Morane-Saulnier MS.733 Alcyon
A piston trainer represented with retractable gear and two flap settings.
Aircraft and simulator scope
- Restauravia Morane-Saulnier MS.733 Alcyon · Restauravia · MSFS 2020 · Add-on starting point
- Restauravia Morane-Saulnier MS.733 Alcyon · Restauravia · MSFS 2024 · Add-on starting point
The simulator model and controls
Restauravia Morane-Saulnier MS.733 Alcyon is the selected Restauravia configuration.
How this profile feels
Spring resistance builds with the selected airspeed response. A separate aerodynamic term adds speed-dependent control load.
Valid trim provides the configured pressure relief. Autopilot following is off.
Aircraft and configuration
Restauravia's MS.733 Alcyon has a 240 hp piston engine, retractable landing gear and flap settings of 16 and 32 degrees. The cockpit combines an airspeed indicator in knots, an altimeter in feet and a vertical-speed indicator in hectometres per minute.
Controls and equipment
The manual identifies pitch trim and labels the chocks, pitot covers and stick lock as visual accessories. Its flap-speed table contains conflicting values, so those figures are not combined into a single limit.
About the values
Strengths are normalized hardware-feel settings. They set the effect balance; hand force depends on the device and its limits. The IAS reference is a tuning value.
Documentary review and sources
These decisions describe the documentary basis and remaining gaps for this revision. Aircraft documentation and a starting setting describe different kinds of evidence.
Aircraft and variant
InheritedRestauravia Morane-Saulnier MS.733 Alcyon is the selected Restauravia configuration.
Flight controls
InheritedA piston trainer represented with retractable gear and two flap settings.
Trim
InheritedThe manual identifies pitch trim and labels the chocks, pitot covers and stick lock as visual accessories. Pitch authority 0.3 provides load relief and permitted centre movement; roll authority is 0.
Autopilot and stability
InheritedAutopilot following is off; the configured spring and load retain the hardware feel.
Equipment
InheritedRestauravia's MS.733 Alcyon has a 240 hp piston engine, retractable landing gear and flap settings of 16 and 32 degrees. The cockpit combines an airspeed indicator in knots, an altimeter in feet and a vertical-speed indicator in hectometres per minute.
Speeds and limits
InheritedThe indicated-speed references set the profile response scale; they are separate from aircraft operating limits.
Simulator integration
InheritedThe profile targets msfs2020, msfs2024. Add-on-specific controls use only the supported references configured by this profile.
Force-feedback settings
InheritedThe settings define the profile’s effect balance. Device output limits affect physical hand force.
Starting settings and their rationale
These configured values are starting estimates. The explanations describe what each setting controls; physical validation appears separately below.
| Setting | Starting value | What it controls and why |
|---|---|---|
| Spring strength | Starting value0.74 | What it controls and whyThe manual identifies pitch trim and labels the chocks, pitot covers and stick lock as visual accessories. The baseline spring is 0.74. Its low-speed blend reaches baseline strength at 45 KIAS. |
| Master force gain | Starting value0.85 | What it controls and whyScales overall profile strength while preserving effect balance, subject to device and output limits. |
| Profile force gain | Starting value0.8 | What it controls and whyThe aerodynamic-load gain is 0.8 with an indicated-speed reference of 110 KIAS. This supplies speed-dependent loading alongside the spring. |
| Force tuning speed/reference | Starting value110 kt | What it controls and whySets the IAS reference for aerodynamic loading. It is an estimate, not published cruise TAS or a flight limit. |
| Spring response reference speed | Starting value45 kt | What it controls and whySets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it. |
| Aileron force scale | Starting value0.71 | What it controls and whyRoll and pitch aerodynamic scales are 0.71 and 0.86, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled. |
| Elevator force scale | Starting value0.86 | What it controls and whyScales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings. |
| Trim feel | Starting valueDisabled | What it controls and whyRetained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement. |
| Trim relief | Starting valueEnabled | What it controls and whyAllows trim relief with supported control law and valid telemetry. Axis authorities set its amount. |
| Autopilot follow | Starting valueDisabled | What it controls and whyAutopilot following is off; the configured spring and load retain the hardware feel. |
| Autopilot neutral hold | Starting valueDisabled | What it controls and whyPermits centering hold during a supported AP state, separate from following a moving target. |
| Output force limit | Starting value0.55 | What it controls and whyCaps directed-force output. Native spring effects and device limits remain separate. |
All 44 starting settings and their rationale
The settings define the profile’s effect balance. Device output limits affect physical hand force.
| Setting | Starting value | What it controls and why |
|---|---|---|
| Spring strength | Starting value0.74 | What it controls and whyThe manual identifies pitch trim and labels the chocks, pitot covers and stick lock as visual accessories. The baseline spring is 0.74. Its low-speed blend reaches baseline strength at 45 KIAS. |
| Spring deadband | Starting value0.04 | What it controls and whySets travel around the centre before the baseline spring resists. Smaller values engage it sooner. |
| Profile force gain | Starting value0.8 | What it controls and whyThe aerodynamic-load gain is 0.8 with an indicated-speed reference of 110 KIAS. This supplies speed-dependent loading alongside the spring. |
| Master force gain | Starting value0.85 | What it controls and whyScales overall profile strength while preserving effect balance, subject to device and output limits. |
| QBlend Enabled | Starting valueEnabled | What it controls and whyAllows baseline spring strength to rise with indicated airspeed where the control law permits it. |
| QSpring Minimum Factor | Starting value0.55 | What it controls and whySets low-speed spring strength as a fraction of baseline when blending is enabled. One keeps full strength. |
| QSpring Start Knots | Starting value15 kt | What it controls and whySets the IAS where the low-speed spring blend starts rising. This is a feel threshold, not a flight limit. |
| Spring response reference speed | Starting value45 kt | What it controls and whySets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it. |
| Force tuning speed/reference | Starting value110 kt | What it controls and whySets the IAS reference for aerodynamic loading. It is an estimate, not published cruise TAS or a flight limit. |
| Airspeed spring stiffening gain | Starting value0.15 | What it controls and whyThe high-speed spring-stiffening gain is 0.15. It strengthens the permitted spring response above 45 KIAS, with the squared-speed ratio capped at 5. |
| Airspeed spring stiffening limit | Starting value5 | What it controls and whyLimits the squared airspeed ratio used for high-speed spring stiffening; it is not a device-force cap. |
| Aileron force scale | Starting value0.71 | What it controls and whyRoll and pitch aerodynamic scales are 0.71 and 0.86, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled. |
| Elevator force scale | Starting value0.86 | What it controls and whyScales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings. |
| Output force limit | Starting value0.55 | What it controls and whyCaps directed-force output. Native spring effects and device limits remain separate. |
| Trim feel | Starting valueDisabled | What it controls and whyRetained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement. |
| Trim relief | Starting valueEnabled | What it controls and whyAllows trim relief with supported control law and valid telemetry. Axis authorities set its amount. |
| Elevator Authority | Starting value0.3 | What it controls and whyThe manual identifies pitch trim and labels the chocks, pitot covers and stick lock as visual accessories. Pitch authority 0.3 provides load relief and permitted centre movement; roll authority is 0. |
| Aileron Authority | Starting value0 | What it controls and whyScales supported roll-trim relief and permitted centre movement. Zero removes roll response. |
| Force Trim Enabled | Starting valueDisabled | What it controls and whyEnables local force trim, separate from aircraft-owned trim and add-on integration qualification. |
| GLoad Enabled | Starting valueEnabled | What it controls and whyAllows load-factor changes to modify permitted spring laws. Passive fly-by-wire feel can suppress it. |
| Rate Damping Enabled | Starting valueEnabled | What it controls and whyEnables rate damping with the configured coefficients and control law. |
| Autopilot follow | Starting valueDisabled | What it controls and whyAutopilot following is off; the configured spring and load retain the hardware feel. |
| Autopilot follow authority | Starting value0.1 | What it controls and whySets admitted AP-follow gain, not a percentage of travel. Runtime ownership and input limits still apply. |
| Autopilot neutral hold | Starting valueDisabled | What it controls and whyPermits centering hold during a supported AP state, separate from following a moving target. |
| Autopilot neutral hold strength | Starting value0.6 | What it controls and whySets admitted AP neutral-hold strength; inactive while neutral hold is disabled. |
| Enabled | Starting valueEnabled | What it controls and whyEnables aerodynamic cues; each still needs nonzero strength and its simulator conditions. |
| Gain | Starting value0.35 | What it controls and whySets stall-buffet strength. Zero removes the cue without changing simulator stalls or warnings. |
| Gain | Starting value0 | What it controls and whySets high-Mach buffet strength; onset and full-strength thresholds are separate. |
| Gain | Starting value0 | What it controls and whySets flap buffet at the configured position and speed gates. Flap movement texture is separate. |
| Maximum flap index | Starting value1 | What it controls and whySets the final flap index for detent normalization. UP plus three detents uses maximum index3. |
| Minimum flap index | Starting value1 | What it controls and whySets the first flap detent that admits buffet; this is a handle index, not degrees. |
| Gain | Starting value0 | What it controls and whySets gear aerodynamic buffet; movement and ground-contact cues are separate. |
| Shaker Enabled | Starting valueDisabled | What it controls and whyPermits shaker at supported warning conditions; the switch does not establish aircraft equipment. |
| Stick shaker amplitude | Starting value0.5 | What it controls and whySets triggered shaker strength; inactive while the shaker feature is disabled. |
| Enabled | Starting valueEnabled | What it controls and whyEnables ground effects; each still needs its own strength and contact or motion telemetry. |
| Gain | Starting value0.4 | What it controls and whySets rolling texture strength, modified by speed, surface and undercarriage configuration. |
| Gain | Starting value0.25 | What it controls and whySets gear-bump texture during ground motion, separate from touchdown impact. |
| Gain | Starting value0.65 | What it controls and whySets landing-impact strength; landing telemetry and response shape determine the pulse. |
| Gain | Starting value0 | What it controls and whySets reverse-thrust vibration with valid reverser and engine conditions. Zero removes the cue. |
| Enabled | Starting valueEnabled | What it controls and whyEnables engine cues with nonzero settings and valid running-engine telemetry. |
| Gain | Starting value0.12 | What it controls and whySets estimated engine vibration using configured telemetry and response, not measured cockpit vibration. |
| Enabled | Starting valueEnabled | What it controls and whyEnables accessory cues with configured strengths and observed accessory movement. |
| Gain | Starting value0.035 | What it controls and whySets texture from observed flap movement; a command without movement does not establish the cue. |
| Gain | Starting value0.035 | What it controls and whySets texture from observed gear movement, separate from aerodynamic and touchdown effects. |
Limits and open questions
- Force magnitudes and speed references are estimates. Physical and installed acceptance are deferred.
- ASIknots,altitudefeet,VSIhm/min.90ktVFE conflicts with85/80kt detents; no limit override from this table.
- Manual trainer estimate. Existing priority admission is retained; the related XP12 author's express flight-model uncertainty remains a quality-review concern, not a claim of qualification.
- Legacy manual material is used only with separately verified current package scope.
Physical validation
No physical force validation is recorded in this public catalogue for this revision. Documentary review and software checks do not establish how a particular device feels.
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