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Bob Scott

New revision of Bob Scott's A330/340 FDEs available

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Guest bisinchi

Hi,I just got your new file, great stuff, the plane flies really well, congratulations on this great job!!I have a quick question: when flying with the AP in LNAV mode, the plane banks very sharply up to 30

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There are some settings in the MCDU tuning page (accessed by right-clicking the INIT button on the MCDU) that will slow down the roll rate. The ony catch is that it can slow down aircraft reaction enough to affect things like nav/localizer intercepts. It's probably worthwhile to experiment with it some...but make sure to write down the initial settings, because the value is changed permanently as soon as you enter it into the MCDU.RegardsBob ScottATP IMEL Gulfstream II-III-IV-V L-300Washington, DC


Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

System1 (P3Dv5/v4): i9-13900KS @ 6.0GHz, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@30Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU, 1.2Gbps internet
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys2 (MSFS/XPlane): i9-10900K @ 5.1GHz, 32GB 3600/15, nVidia RTX4090FE, Alienware AW3821DW 38" 21:9 GSync, EVGA 1000P2
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, 2x TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Portable Sys3 (P3Dv4/FSX/DCS): i9-9900K @ 5.0 Ghz, Noctua NH-D15, 32GB 3200/16, EVGA RTX3090, Dell S2417DG 24" GSync
Corsair RM850x PSU, TM TCA Officer Pack, Saitek combat pedals, TM Warthog HOTAS, Coolermaster HAF XB case

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Guest bisinchi

Hello,Actually, what I meant, was that when the plane would go from 1 waypoint to the other with LNAC engaged, the roll rate was quite fast (the plane would bank quickly to 30

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Guest Skywalker

If you find the best rate for a slighly decreased roll rate please post it here in the forum. I am quite interested to know which adjustment within the MCDU setting shows best result. Thanks!Sam

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There's a tuning page for "Roll using Ailerons." Try reducing the max acceleration value...believe that'll slow A/P roll inputs, with the aformentioned possible side effect of reducing it too much and affecting course intercepts, which rely on specific roll/turn rate performance to work properly. Mine's set to 8 right now, decel zone at 10, max controller change 2000.More than likely optimum settings will vary from user to user.RegardsBob ScottATP IMEL Gulfstream II-III-IV- L-300Washington, DC


Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

System1 (P3Dv5/v4): i9-13900KS @ 6.0GHz, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@30Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU, 1.2Gbps internet
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys2 (MSFS/XPlane): i9-10900K @ 5.1GHz, 32GB 3600/15, nVidia RTX4090FE, Alienware AW3821DW 38" 21:9 GSync, EVGA 1000P2
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, 2x TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Portable Sys3 (P3Dv4/FSX/DCS): i9-9900K @ 5.0 Ghz, Noctua NH-D15, 32GB 3200/16, EVGA RTX3090, Dell S2417DG 24" GSync
Corsair RM850x PSU, TM TCA Officer Pack, Saitek combat pedals, TM Warthog HOTAS, Coolermaster HAF XB case

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Guest Jean

Bonjour Bob,Fantastic job, your FDE!Everything seems to be OK. I flew with all the 330 & 340 model.I still have a strange reaction with all the model.After taking off, I am switching on the AP after 1000 ft, and the planetake always a 6000 ft/mn climb attitude before coming to a normal climbaround 2500 ft/mn.I do not have this problem with the PSS 320.Do you have an idea about that ?Regards,Jean Paris, France

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Guest Skywalker

Hi JeanThe A/P always corrects the calculated speed by increasing or decreasing the pitch. If your angle after takeoff is flat, your are accelerating quicker compared to the calculated speed in the MCDU. In order to reduce the IAS to the calculated figures your rate can get as high as 6000ft/m. Try to climb with a higher pitch immediately after takeoff and check your PFD, where the calculated speed is also indicated. That's the way I handle it, but Bob might know an an alternative way. Bob?Regards, Sam

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>I still have a strange reaction with all the model.>After taking off, I am switching on the AP after 1000 ft, and>the plane>take always a 6000 ft/mn climb attitude before coming to a>normal climb>around 2500 ft/mn.>I do not have this problem with the PSS 320.>>Do you have an idea about that ?>>Regards,Jean; If you are significantly above the target speed when you engage the A/P, it will (properly) raise the nose to reduce the airspeed to the target speed indicated by the magenta pointer. In any managed climb mode, the thrust is fixed, and speed control is accomplished via pitch. At 1000 ft AGL target speed should be V2+10. It sounds like maybe you are not aggressively following the pitch command bar during the early part of your climb...if you rotate the nose expeditiously right to the proper climb attitude you should be close to the V2+10 optimum second-segment climb speed when you engage the A/P at 1000 ft. Also, if you wait until just after reducing to climb thrust at 1500 ft AGL, the target speed will change to climb speed and engagement of the AP at that point will cause the nose to drop to accelerate to the climb schedule speed.RegardsBob ScottATP IMEL Gulfstream II-III-IV-V L-300Washington, DC


Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

System1 (P3Dv5/v4): i9-13900KS @ 6.0GHz, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@30Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU, 1.2Gbps internet
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys2 (MSFS/XPlane): i9-10900K @ 5.1GHz, 32GB 3600/15, nVidia RTX4090FE, Alienware AW3821DW 38" 21:9 GSync, EVGA 1000P2
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, 2x TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Portable Sys3 (P3Dv4/FSX/DCS): i9-9900K @ 5.0 Ghz, Noctua NH-D15, 32GB 3200/16, EVGA RTX3090, Dell S2417DG 24" GSync
Corsair RM850x PSU, TM TCA Officer Pack, Saitek combat pedals, TM Warthog HOTAS, Coolermaster HAF XB case

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Guest Jean

Thank you Bob and thank you Sam for your advises.I think you are both right; I am a little bit weak with theclimb rate just after take off, especially with the 340.I am always faster than V2 + 10 at 1000 ft.By the way I went in the PSS 320 MCDU INIT TUNING pages andhere are the difference between the 320 and the 330/340 :320 vs 330/340 :Pitch / ElevatorMax Acceleration : 1.500000 - 5.0000000 Vertcial Speed / PitchMax Controler Change : 1.000000 - 4.000000Airspeed / PitchMax Controller Change : 2.000000 - 4.000000All the other value are the same.I will fly the 330 with the 320 value and see...Regards,Jean

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Guest Skywalker

Bob, do your FDE's react to icing?I often fly long hauls in real time with the A330-200. For obvious reasons I have to leave the cockpit for a couple of hours. When I return back to the cockpit I start with the descent and finish the flight without a problem. Yesterday I did another long haul and noticed later in the logfile that the aircraft went into an A-Floor on FL41. I wonder, whether the colder season might have caused failures due to icing in the engines and on the wings, as I never observed such events during summer. Is icing modelled in FS9 or how can A-Floors be explained while enroute?Thanks for any advise!Sam

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All FDEs are affected by icing in FS9.It sounds to me like you had a bout of severe icing, which caused your pitot system to freeze, with a resultant zero airspeed event and A-floor. This is a fairly common problem in FS9...even with pitot heat turned on, the random icing in clouds feature can give level 5 (severe) icing, which results in the pitot system freezing up even with the pitot heat on. This really gives programs like Flightdeck Companion fits, since they base their checklist sequencing on airspeed profiles in part.I've found that disabling random icing in clouds in FSUIPC/ActiveSky 2004 and also selecting the disable severe icing option in FSUIPC (payware version) has all but eliminated this problem. IMHO, the icing behavior in FS9 is pretty flaky anyway.Of course if you forgot to turn probe/pitot heat systems on, all it takes is flying in clouds to ice 'em up (not far from realistic in this case).RegardsBob ScottATP IMEL Gulfstream II-III-IV-V L-300Washington, DC


Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

System1 (P3Dv5/v4): i9-13900KS @ 6.0GHz, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@30Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU, 1.2Gbps internet
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys2 (MSFS/XPlane): i9-10900K @ 5.1GHz, 32GB 3600/15, nVidia RTX4090FE, Alienware AW3821DW 38" 21:9 GSync, EVGA 1000P2
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, 2x TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Portable Sys3 (P3Dv4/FSX/DCS): i9-9900K @ 5.0 Ghz, Noctua NH-D15, 32GB 3200/16, EVGA RTX3090, Dell S2417DG 24" GSync
Corsair RM850x PSU, TM TCA Officer Pack, Saitek combat pedals, TM Warthog HOTAS, Coolermaster HAF XB case

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Guest Skywalker

I see. Thanks again for your highly detailed explanation, Bob!I wasn't aware that icing is modelled in FS9 that accurate. As I indeed use FSUIPC and ActiveSky 2004 (all reg.) I'll go check those functions you mentioned and reproduce the same flight. Thank you very much!Sam

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Guest christa

Hi there,The FDE update for PSS330-340 series is very fine and thank you very much.Is there any update version for the PSS320Pro as well?RegardsT.Roussos/Athens Greece

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