Start here
A few places to begin, from the aircraft’s story to the people who fly it.
Meet the aircraft
The SeaMax M-22 is a light sport amphibian designed around both water and land operations. Its cockpit canopy provides a broad forward view, while retractable landing gear and a retractable water rudder serve its two operating environments. JRollon reports working with the real aircraft’s designer on the simulator model.
Aircraft background
JRollon · Read more ↗SeaMax support and water-handling limits
JRollon reports working with the real aircraft’s designer on the simulator model. This is an older product: his page says X-Plane 11 operation requires an updated file from the support forum and notes limitations in its water handling.
SeaMax M-22 · JRollon · X-Plane 11
JRollon · Read more ↗Into the cockpit
YouTube AVweb · 5 min ·
SeaMax M22 LSA Flight Trial and Review
AVweb reviews the SeaMax M22 and joins a short flight.
Real aircraft · SeaMax M-22
Watch on YouTube ↗Preview images are served by AirframeDB. Videos open on YouTube only when you choose to watch.
Meet SeaMax M-22
The SeaMax M-22 is a light sport amphibian designed around both water and land operations. Its cockpit canopy provides a broad forward view, while retractable landing gear and a retractable water rudder serve its two operating environments.
JRollon reports working with the real aircraft’s designer on the simulator model. This is an older product: his page says X-Plane 11 operation requires an updated file from the support forum and notes limitations in its water handling.
SeaMax M-22
Aircraft type designators
Use the code for the model you are flying. The linked authority lists the applicable aircraft.
History & design
Miguel Rosário’s twenty-second design
Seamax’s historical account dates the M-22 concept to 1998 and prototype-development work to 2001. The first aircraft was delivered in 2002. Its number reflects designer Miguel Rosário’s twenty-second project.
Seamax · Seamax company and product history ↗Seamax M-22 manufacturer history and equipment
A later company continues the aircraft
The company formed in 2017 acquired the M-22 intellectual property and brought Rosário into the business. That corporate date is therefore not the beginning of the airframe’s development. The manufacturer’s account describes resuming and expanding production of an already established aircraft.
Seamax · Seamax company and product history ↗Seamax M-22 manufacturer history and equipment
Systems & details
Reading an older simulator implementation
JRollon describes help from the aircraft’s designer, plus a bilge pump, retractable water rudder and gear-viewing mirrors in the simulation. This is an older product account with older X-Plane compatibility statements; it does not establish current XP12 compatibility or inclusion of later M-22 factory changes.
In your simulator
Systems, equipment and documentation for each developer’s aircraft.
X-Plane 11SeaMax M-22
JRollon · Released
SeaMax M-22
JRollon · Released
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
SeaMax support and water-handling limitsSeaMax M-22 · JRollon · X-Plane 11
JRollon reports working with the real aircraft’s designer on the simulator model. This is an older product: his page says X-Plane 11 operation requires an updated file from the support forum and notes limitations in its water handling.
Official developer / designated-store reference · checked 2026-09-14
JRollon · Read the source ↗Read the original documentation from the people who created it. Manuals open on their publisher’s website.
Developer documentation
SeaMax M-22 Amphibious Aircraft for X-Plane — JRollonJRollon · Official developer / designated-store reference · checked 2026-09-14Type designator
ICAO Doc 8643 — aircraft type designatorsInternational Civil Aviation Organization · Public search data retrieved 2026-09-14; authority update 2026-09-03Aircraft documentation
Seamax company and product historySeamax · Manufacturer history published in 2022; direct page now unavailable, exact retrieval excerpt retained M-22 specificationsSeamax · Published manufacturer specification; inconsistent wingspan and speed conversions excludedBuilt-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-20261022-v1 · 1 profile choice
SeaMax M-22
Free and Pro · Revision 1 · Partial review
X-Plane 11
SeaMax M-22: The chosen resistance accompanies the amphibious light-aircraft rendition.
SeaMax M-22
SeaMax M-22: The chosen resistance accompanies the amphibious light-aircraft rendition.
Aircraft and simulator scope
- SeaMax M-22 · X-Plane 11 · family starting point
SeaMax M-22 · Historical XP11 catalogue scope; compatibility is not transferred to XP12.
The simulator model and controls
The SeaMax M-22 is a light sport amphibian designed around both water and land operations. Its cockpit canopy provides a broad forward view, while retractable landing gear and a retractable water rudder serve its two operating environments.
This starting point selects SeaMax M-22. Its aircraft-level settings do not select a particular developer’s custom systems.
How this profile feels
The chosen resistance accompanies the amphibious light-aircraft rendition. Spring resistance builds with the selected airspeed response. A separate aerodynamic term adds speed-dependent control load.
Pitch relief is independent of landing-gear and water-rudder configuration. Valid trim provides the configured pressure relief. Autopilot following is off.
Controls and trim
The SeaMax is a light amphibian with retractable landing gear and a retractable water rudder. JRollon’s older simulator product has its own updated-file requirements and documented water-handling limitations.
About the values
The gains are normalized profile settings. They describe the chosen effect balance; hand force depends on the device and its output limits. IAS references are tuning values rather than operating limits. Physical acceptance of this revision remains pending.
What the documentation establishes
JRollon identifies SeaMax M-22 amphibian for XP9/10 and operation in XP11.
JRollon lists amphibious landing gear, folding wings and a retractable water rudder. Their command mapping and water-load magnitude remain unreviewed.
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
ReviewedThis starting point selects SeaMax M-22. Its aircraft-level settings do not select a particular developer’s custom systems.
Flight controls
Not yet reviewedThe SeaMax is a light amphibian with retractable landing gear and a retractable water rudder. JRollon’s older simulator product has its own updated-file requirements and documented water-handling limitations.
Trim
Not yet reviewedPitch relief is independent of landing-gear and water-rudder configuration. Pitch authority 0.3 provides load relief and permitted centre movement; roll authority is 0.
Autopilot and stability
Not yet reviewedAutopilot following is off; the configured spring and load retain the hardware feel.
Equipment
ReviewedGear, flap and ground cues follow the selected settings and available simulator-reported states.
Speeds and limits
Not yet reviewedThe indicated-speed references set the profile response scale; they are separate from aircraft operating limits.
Simulator integration
Not yet reviewedThe profile targets xplane11. Add-on-specific controls use only the supported references configured by this profile.
Force-feedback settings
Not yet reviewedThe 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 chosen resistance accompanies the amphibious light-aircraft rendition. 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 90 KIAS. This supplies speed-dependent loading alongside the spring. |
| Force tuning speed/reference | Starting value90.0 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 value45.0 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 value0.6 | What it controls and whyRoll and pitch aerodynamic scales are 0.6 and 0.78, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled. |
| Elevator force scale | Starting value0.78 | What it controls and whyScales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings. |
| Trim feel | Starting valueEnabled | 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 chosen resistance accompanies the amphibious light-aircraft rendition. The baseline spring is 0.74. Its low-speed blend reaches baseline strength at 45 KIAS. |
| Spring deadband | Starting value0.045 | 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 90 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 value0.5 | 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 value12.6 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 value45.0 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 value90.0 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 value0.6 | What it controls and whyRoll and pitch aerodynamic scales are 0.6 and 0.78, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled. |
| Elevator force scale | Starting value0.78 | 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 valueEnabled | 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 whyPitch relief is independent of landing-gear and water-rudder configuration. 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 value0.14 | What it controls and whySets flap buffet at the configured position and speed gates. Flap movement texture is separate. |
| Maximum flap index | Starting value3 | What it controls and whySets the final flap index for detent normalization. UP plus three detents uses maximum index3. |
| Minimum flap index | Starting value2 | What it controls and whySets the first flap detent that admits buffet; this is a handle index, not degrees. |
| Gain | Starting value0.1 | 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 value0.12 | What it controls and whySets texture from observed flap movement; a command without movement does not establish the cue. |
| Gain | Starting value0.12 | What it controls and whySets texture from observed gear movement, separate from aerodynamic and touchdown effects. |
Limits and open questions
- The page identifies folding wings, retractable landing gear and water rudder. Amphibious contact cues do not implement water-rudder commands or qualify hydrodynamic forces.
- No simulator launch or physical force validation.
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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