Skip to content
View in the app

A better way to browse. Learn more.

The AVSIM Community

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Slowing down the IFDG 757!

Featured Replies

Hi GuysI've been doing quite a few flights latley testing out the IFDG 757, with the electrical mod in the aircraft CFG file for it to work with 767PIC. The panel works great and the aircraft handles superbly except for one tiny thing! How do I slow it down!? On intermediate finals, with flap 5, I need the gear down, idle thrust and speedbrakes to get a good decent rate to intercept altitude (say descending from 5000ft to 3000ft to intercept the localiser in the future).I find that the thrust is very unstable aswell at low speed, say Flap 30 and VREF about 131 kts, the thrust is very touchy, far more so than the real world unstable regime of a high bypass engine.Is there anyway I can correct this?Apart from that, it's superb! I've printed off some 757-200 performance manuals to work out the V-Speeds etc and I justplug them into the FMC as some airliners require in the real world. As for finding out latest GR WT, what I have found out is that the smallest ZFW figure you can put into the FMC is 81.2 T. If I have a ZFW of that or more, super!, I can just lookat FMC for latest GR WT, but if I have a ZFW less than 81.2, I put 81.2 into the FMC, and calcualte the differential from that, what my actualy ZFW is. Say it's 79.8 T, I would work out that the differential is 1.4T. I don't want to be subtracing an odd number like 1.4 everytime tho, so I input 81.8 into the FMc and work with 2.0 as a nice round figure.I've described my above procedure as i know some poeople get frusttrated working with the FMC for a 767 on a 757, but its' fun! I haven't flown the 76' for ages now I'm hooked on the 757 thanks to IFDG, some great repaints, and Iz!Please, any comments/tips would be greatly accepted.Thanks, J

The 757 IS like that IRL.

Oh,It just seems slightly different to some vid's I've seen. However they all tend to use speedbrake in the vids, it's just that they are uising the thrust levers to maintain Ref+5, whereas I am excerising all the drag devices to try and SLOW it down to Ref+5! Don't get me wrong, it's fun, but a bit OTT! lol. The pax must wonder what I'm playing at sometimes!I'll just start my decent earlier next time :)

@ Jwhich variant/airfile do u use? I found the PW Airfile is a lot slower climbing (RR is like a rocket) and therefore also slower descending.

I've found that at 250kts under 10k, it takes a little bit of speedbrake to get the plane to descend at around 1500fpm, which is about what the real 757 will descend at under the same conditions.Ryan

Hi,I am using the RR variant. I am becoming acustomed to it now, starting descents earlier and making good usage of speedbrake at a high speed, when it is most effective. I would still however like to see a little less thrust at idle power, so that I at least get a stable power regime on finals :). The taxi is also maybe a little fast on the acceleration at idle thrust but it's better than having to us 50%N1 to keep it going!Thanks, J

Hi,I use the FDE by Mike Bauman (757200.air). This file is included in his IFDG 757-200 United Airlines OC file that you can find in the AVSIM library as: ifdg752ua8.zip.Its the best air file for this aircraft that I have come across.Cheers,EHAM8 :-wave

Greg,I flew a level D 757 full flight simulator a week ago. The training captain said that the "FDE" was 99.5% right compared to the real a/c.All I can say is, that it was nowhere NEAR as hard to slow down as the IFDG FDE. I managed to fly the thing by hand quite nicely, and had no trouble in slowing down for the final approach speeds / attitude.I wonder which is "wrong" the IFDG or the 20 million dollar thing...Tero

PPL(A)

Interesting thought Tero, I was always under the impression that it needed the boards out all the way down. Perhaps I heard wrong. Is Iskander's FDE the best currently?

teropa,Thanks for your realistic comparison, that's exactly what I thought from seeing the movies of 757 flight decks though some simmers where adament I was wrong. I'll try the 757200 air file, thanks for the suggestion folks.

The descent rates quoted from the Boeing 757 manual are:At idle thrust and 290kias descent speed, ROD 1800fpm (2700fpm w/ Speedbrakes)At idle thrust and 250kias descent speed, ROD 1500fpm (2000fpm w/ speedbrakes)Marc

Well the IFDG model definitely does not get that.

Yeh I have to agree.I have just done a flight and got around 300 fpm with idle thrust, no speed brakes and zero flap, pretty apalling! On finals I had gear, flap 20, speedbrakes out at 2000ft and VREF+20 set, yet I was decelarting slowly through VREF+80! Is someone able to modify the power settings of the airfile? I would still like the taxi at idle thrust but a little less power in the air.Thanks, J

I tested out Mike Baumann's FDE on a short hop last night, and overall I'd have to say Iz's FDE is better with the exception of descent performance. Anyone else care to give their two cents?Ryan

Is there a better FDE out there?

Create an account or sign in to comment

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.