Saab · Airliner

Saab 340B

A twin-turboprop regional airliner developed through Swedish and American industrial cooperation.

Meet the aircraft

Saab and Fairchild developed the 340 for short regional routes. Its low wing carries two turboprops, and its cabin seats passengers three abreast. Saab continued the programme after Fairchild withdrew.

The 340A and 340B are separate developments, with cockpit equipment also varying by operator. The simulator documentation describes the represented 340B.

Read the full aircraft reference →

Catalogue programme-20261011-v3

FFB-BRIDGE BUILT-IN PROFILE

Saab 340B

Free and ProRevision 1Partial review

Saab 340B: The profile supplies selected regional-aircraft yoke resistance.

Aircraft and simulator scope

  • Saab 340B · MSFS 2024 · family starting point

Saab 340B · Family sources identify only the variants and product versions described above.

The simulator model and controls

Saab and Fairchild developed the 340 for short regional routes. Its low wing carries two turboprops, and its cabin seats passengers three abreast. Saab continued the programme after Fairchild withdrew.

This starting point selects Saab 340B. Its aircraft-level settings do not select a particular developer’s custom systems.

How this profile feels

The profile supplies selected regional-aircraft yoke resistance. Spring resistance builds with the selected airspeed response. A separate aerodynamic term adds speed-dependent control load.

Configured pitch relief belongs to the represented 340B cockpit. Valid trim provides the configured pressure relief. Autopilot following is enabled for supported control references.

Controls and trim

The Saab340B combines twin turboprops and a low wing with three-abreast regional seating. Its B-model and operator cockpit equipment remain separately named from the original 340A and from other regional-turboprop families.

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

Saab page identifies 340B; unrelated Airbus-aileron news is excluded.

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.

Flight controls
Not yet reviewed

The Saab340B combines twin turboprops and a low wing with three-abreast regional seating. Its B-model and operator cockpit equipment remain separately named from the original 340A and from other regional-turboprop families.

Trim
Not yet reviewed

Configured pitch relief belongs to the represented 340B cockpit. Pitch authority 0.3 provides load relief and permitted centre movement; roll authority is 0.14.

Autopilot and stability
Not yet reviewed

Following is on at 0.1 authority when a supported, valid autopilot control reference is available.

Equipment
Not yet reviewed

Gear, flap and ground cues follow the selected settings and available simulator-reported states.

Speeds and limits
Not yet reviewed

The indicated-speed references set the profile response scale; they are separate from aircraft operating limits.

Simulator integration
Not yet reviewed

The profile targets msfs2024. Add-on-specific controls use only the supported references configured by this profile.

Force-feedback settings
Not yet reviewed

The 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.

Estimated starting settings · revision 1
SettingStarting valueWhat it controls and why
Spring strengthStarting value0.74 What it controls and whyThe profile supplies selected regional-aircraft yoke resistance. The baseline spring is 0.74. Its low-speed blend reaches baseline strength at 90 KIAS.
Master force gainStarting value0.85 What it controls and whyScales overall profile strength while preserving effect balance, subject to device and output limits.
Profile force gainStarting value0.68 What it controls and whyThe aerodynamic-load gain is 0.68 with an indicated-speed reference of 210 KIAS. This supplies speed-dependent loading alongside the spring.
Force tuning speed/referenceStarting value210.0 ktWhat 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 speedStarting value90 ktWhat it controls and whySets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it.
Aileron force scaleStarting value0.72 What it controls and whyRoll and pitch aerodynamic scales are 0.72 and 1, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled.
Elevator force scaleStarting value1.0 What it controls and whyScales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings.
Trim feelStarting valueEnabled What it controls and whyRetained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement.
Trim reliefStarting valueEnabled What it controls and whyAllows trim relief with supported control law and valid telemetry. Axis authorities set its amount.
Autopilot followStarting valueEnabled What it controls and whyFollowing is on at 0.1 authority when a supported, valid autopilot control reference is available.
Autopilot neutral holdStarting valueDisabled What it controls and whyPermits centering hold during a supported AP state, separate from following a moving target.
Output force limitStarting 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.

Estimated starting settings · revision 1
SettingStarting valueWhat it controls and why
Spring strengthStarting value0.74 What it controls and whyThe profile supplies selected regional-aircraft yoke resistance. The baseline spring is 0.74. Its low-speed blend reaches baseline strength at 90 KIAS.
Spring deadbandStarting value0.05 What it controls and whySets travel around the centre before the baseline spring resists. Smaller values engage it sooner.
Profile force gainStarting value0.68 What it controls and whyThe aerodynamic-load gain is 0.68 with an indicated-speed reference of 210 KIAS. This supplies speed-dependent loading alongside the spring.
Master force gainStarting value0.85 What it controls and whyScales overall profile strength while preserving effect balance, subject to device and output limits.
QBlend EnabledStarting valueEnabled What it controls and whyAllows baseline spring strength to rise with indicated airspeed where the control law permits it.
QSpring Minimum FactorStarting 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 KnotsStarting value20 ktWhat 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 speedStarting value90 ktWhat it controls and whySets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it.
Force tuning speed/referenceStarting value210.0 ktWhat 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 gainStarting value0.1 What it controls and whyThe high-speed spring-stiffening gain is 0.1. It strengthens the permitted spring response above 90 KIAS, with the squared-speed ratio capped at 5.
Airspeed spring stiffening limitStarting 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 scaleStarting value0.72 What it controls and whyRoll and pitch aerodynamic scales are 0.72 and 1, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled.
Elevator force scaleStarting value1.0 What it controls and whyScales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings.
Output force limitStarting value0.55 What it controls and whyCaps directed-force output. Native spring effects and device limits remain separate.
Trim feelStarting valueEnabled What it controls and whyRetained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement.
Trim reliefStarting valueEnabled What it controls and whyAllows trim relief with supported control law and valid telemetry. Axis authorities set its amount.
Elevator AuthorityStarting value0.3 What it controls and whyConfigured pitch relief belongs to the represented 340B cockpit. Pitch authority 0.3 provides load relief and permitted centre movement; roll authority is 0.14.
Aileron AuthorityStarting value0.14 What it controls and whyScales supported roll-trim relief and permitted centre movement. Zero removes roll response.
Force Trim EnabledStarting valueDisabled What it controls and whyEnables local force trim, separate from aircraft-owned trim and add-on integration qualification.
GLoad EnabledStarting valueEnabled What it controls and whyAllows load-factor changes to modify permitted spring laws. Passive fly-by-wire feel can suppress it.
Rate Damping EnabledStarting valueEnabled What it controls and whyEnables rate damping with the configured coefficients and control law.
Autopilot followStarting valueEnabled What it controls and whyFollowing is on at 0.1 authority when a supported, valid autopilot control reference is available.
Autopilot follow authorityStarting 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 holdStarting valueDisabled What it controls and whyPermits centering hold during a supported AP state, separate from following a moving target.
Autopilot neutral hold strengthStarting value0.6 What it controls and whySets admitted AP neutral-hold strength; inactive while neutral hold is disabled.
EnabledStarting valueEnabled What it controls and whyEnables aerodynamic cues; each still needs nonzero strength and its simulator conditions.
GainStarting value0.28 What it controls and whySets stall-buffet strength. Zero removes the cue without changing simulator stalls or warnings.
GainStarting value0 What it controls and whySets high-Mach buffet strength; onset and full-strength thresholds are separate.
GainStarting value0.14 What it controls and whySets flap buffet at the configured position and speed gates. Flap movement texture is separate.
Maximum flap indexStarting value3 What it controls and whySets the final flap index for detent normalization. UP plus three detents uses maximum index3.
Minimum flap indexStarting value2 What it controls and whySets the first flap detent that admits buffet; this is a handle index, not degrees.
GainStarting value0.1 What it controls and whySets gear aerodynamic buffet; movement and ground-contact cues are separate.
Shaker EnabledStarting valueDisabled What it controls and whyPermits shaker at supported warning conditions; the switch does not establish aircraft equipment.
Stick shaker amplitudeStarting value0.5 What it controls and whySets triggered shaker strength; inactive while the shaker feature is disabled.
EnabledStarting valueEnabled What it controls and whyEnables ground effects; each still needs its own strength and contact or motion telemetry.
GainStarting value0.42 What it controls and whySets rolling texture strength, modified by speed, surface and undercarriage configuration.
GainStarting value0.32 What it controls and whySets gear-bump texture during ground motion, separate from touchdown impact.
GainStarting value0.82 What it controls and whySets landing-impact strength; landing telemetry and response shape determine the pulse.
GainStarting value0.48 What it controls and whySets reverse-thrust vibration with valid reverser and engine conditions. Zero removes the cue.
EnabledStarting valueEnabled What it controls and whyEnables engine cues with nonzero settings and valid running-engine telemetry.
GainStarting value0.06 What it controls and whySets estimated engine vibration using configured telemetry and response, not measured cockpit vibration.
EnabledStarting valueEnabled What it controls and whyEnables accessory cues with configured strengths and observed accessory movement.
GainStarting value0.12 What it controls and whySets texture from observed flap movement; a command without movement does not establish the cue.
GainStarting value0.12 What it controls and whySets texture from observed gear movement, separate from aerodynamic and touchdown effects.
Limits and open questions
  • Product/release pages give no 340B gearing.
  • Trim authority remains unresolved.
  • Generic follow lacks a product demand contract.
  • Turboprop/gear/flap configuration needs a matched 340B equipment schedule.
  • No applicable IAS force curve was established.
  • Multi-aircraft release AP fixes are not assigned to 340B without scope.
  • Transport role does not establish mechanical hand forces.

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.

FFB-Bridge maintains this profile’s revisions and tuning discussion.

Revision 1 and download availability in FFB-Bridge ↗
Exact profile identity
Profile
airframe-saab-340b
Artifact SHA-256
98a3d57fac4f563a2fa809b4d461d9a8b053d122c59a4ae9cacc3880258d2ac2
Bytes
12268
Spring strength
Forces.SpringStrength
Spring deadband
Forces.SpringDeadband
Profile force gain
Forces.ForceGain
Master force gain
Forces.MasterGain
QBlend Enabled
Forces.QBlendEnabled
QSpring Minimum Factor
Forces.QSpringMinimumFactor
QSpring Start Knots
Forces.QSpringStartKnots
Spring response reference speed
Forces.QSpringFullKnots
Force tuning speed/reference
Forces.CruiseSpeedRefKnots
Airspeed spring stiffening gain
Forces.SpringAirspeedStiffenGain
Airspeed spring stiffening limit
Forces.SpringAirspeedStiffenCap
Aileron force scale
Forces.AileronForceScale
Elevator force scale
Forces.ElevatorForceScale
Output force limit
Forces.MaxOutputForce
Trim feel
StickFeel.TrimFeelEnabled
Trim relief
StickFeel.TrimReliefEnabled
Elevator Authority
StickFeel.TrimRelief.ElevatorAuthority
Aileron Authority
StickFeel.TrimRelief.AileronAuthority
Force Trim Enabled
StickFeel.ForceTrimEnabled
GLoad Enabled
StickFeel.GLoadEnabled
Rate Damping Enabled
StickFeel.RateDampingEnabled
Autopilot follow
Autopilot.FollowEnabled
Autopilot follow authority
Autopilot.FollowAuthority
Autopilot neutral hold
Autopilot.NeutralHoldEnabled
Autopilot neutral hold strength
Autopilot.NeutralHoldStrength
Enabled
Aero.Enabled
Gain
Aero.Stall.Gain
Gain
Aero.Mach.Gain
Gain
Aero.Flap.Gain
Maximum flap index
Aero.Flap.MaxFlapIndex
Minimum flap index
Aero.Flap.MinFlapIndex
Gain
Aero.Gear.Gain
Shaker Enabled
Aero.ShakerEnabled
Stick shaker amplitude
Aero.Shaker.Amplitude
Enabled
Ground.Enabled
Gain
Ground.Rumble.Gain
Gain
Ground.Bumps.Gain
Gain
Ground.Thump.Gain
Gain
Ground.Reverse.Gain
Enabled
Engine.Enabled
Gain
Engine.Rumble.Gain
Enabled
Mechanical.Enabled
Gain
Mechanical.FlapMotion.Gain
Gain
Mechanical.GearMotion.Gain