I have had a repeated problem with the autobrakes on my MD11. As soon as the aircaft touches down, the autobrakes disenagage. I have CH pedals with tow brakes - could the sensitivities be too high ? Any ideas would be appreciated.ThanksRichard Foreman

the autobrakes disengage when you press the pedals for manual braking action.With CH pedals it must be an interference...there was some posts about it in the past.Try to search them with "search" function...Cheers,

I am experiencing the same problem, but I can not find a post with the relevant solution. With the PMDG 747 autobrakes appear to working OK.Jan Peter

I am experiencing the same problem, but I can not find a post with the relevant solution. With the PMDG 747 autobrakes appear to working OK.Jan Peter

The signal from any analogue source is never truly constant. It's possible you just need a larger dead-zone to eliminate spurious signals.

Ken,I already tried that without success. Fiddling around with FSUIPC was also unsuccessfull. I blamed it on my CH pedals being worn-out after many flight-hours, LOL. Nevertheless, I think it is a CH problem.Jan Peter

I have had a repeated problem with the autobrakes on my MD11. As soon as the aircaft touches down, the autobrakes disenagage. I have CH pedals with tow brakes - could the sensitivities be too high ? Any ideas would be appreciated.ThanksRichard Foreman

If you have FSUIPC, you might want to remove the calibration of the brake pedals through FSUIPC for FS... I had similar problems with the autobrake releasing as soon as the mains touched down. I had calibrated pedals, yoke, and lever quadrant with FSUIPC (all Saitek ProFlight)... went mad trying to work out why the disconnect was happening... I removed the FSUIPC calibration for the brakes and everything has been fins with autoland, autobrak, and all ever since...Worth trying if you have FSUIPC and have calibrated with it...Hope this helpsAndrew

I had this problem with both the Queen and the MD-11. Since I use a Reg'd copy of FSUIPC for all my controller axis, there was a simple fix - make the brakes axis "Send Direct to FSUIPC Calibration" when selecting the axis type in FSUIPC (Axis Asssignments tab). Don't do this for rudder, aileron, throttle, or elevator axis as many advanced add-on aircraft such as PMDG and Level-D, need those axis to be "Send to FS as normal axis" because of their unique way they refer to FS Axis. If you do, you'll get squirly Autopilot controls, especially on ILS approaches.Runnig the brakes axis 'direct to FSUIPC calibration' smooths-out any and all transient spikes that routinely cause Autobrakes and Spoliers not to deploy during touchdown. The MD-11 is especially sensitive to this and it is why the 'Direct' mode helps. Also in FSUIPC, when you calibrate the brake axis, make sure you have 0 (zero) axis output always, when the brakes are not actively being pushed - raise your zero calibration point if you must, to get a solid, stable, zero output.Also, make sure your zero throttle calibration points are solid - and put your throttles into the idle detents (zero oupout) well before you touchdown; or again, autobrakes won't workIf you use profiles in FSUIPC for different aircraft assignments, open up your FSUIPC.ini file and make sure you have all axis set to type 'F' except the brake axis, those should now be type 'D'.As an example, here is my profile-specific MD-11 Axis assignments from my FSUIPC.ini file. Axis Y=Seitek Yoke/Throttle, R=CH Pedals, & T= Seitek 2nd Throttle.Note my brake axis (lines 5 & 6) - they're type 'D' and the zero calibration point has been raised from my standard -16384 to -11392/-11430.

[JoystickCalibration.PMDG_MD11]...Aileron=-16384,-512,512,16383Elevator=-16384,-512,512,16383Rudder=-16384,-512,512,16383LeftBrake=-11392,16383/24RightBrake=-11430,16383/24Throttle1=-16384,-512,512,16383/32Throttle2=-16384,-512,512,16383/32Throttle3=-16384,-512,512,16383/32Spoilers=-16383,16384/16Flaps=-16383,16384/16[Axes.PMDG_MD11]0=YX,256,F,65763,0,0,01=YY,256,F,65762,0,0,02=YZ,256,F,66382,0,0,03=YU,256,F,66420,0,0,04=YV,256,F,66423,0,0,05=RX,256,D,7,0,0,06=RY,256,D,8,0,0,07=RZ,256,F,65764,0,0,08=TX,256,F,66426,0,0,09=TZ,256,F,66534,0,0,0