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.

JS41 runway length requirements

Featured Replies

Is this not in the documentation of the JS41 ? (thinking of performance tables)

____________________________________________________

Dieter de Wit

Performance tables are conspicuously absent.

Gents,As I understand it, there were no generalized performance tables. Instead, the pilot referenced "Runway Analysis" that was specific to each airfield. There's no way to do that for every runway in FSX.RSR or Nick would be able to provide greater detail.

Best Regards,

Kurt "Yoda" Kalbfleisch

Pinner, Middx, UK

Beta tester for PMDG J41, NGX, and GFO, Flight1 Super King Air B200, Flight1 Cessna Citation Mustang, Flight1 Cessna 182, Flight1 Cessna 177B, Aeroworx B200

If it's the same as the SAAB's "Runway Analysis" system, it's just another way of finding the Takeoff data. In the plane itself, there's the BIG book - AFM - that has all the performance graphs/charts for the plane. No one uses these "spaghetti charts," instead they get a subscription to a service that provides simpler to use tables that average Joe Pilot can figure out.The runway analysis is a book broken down by airport, runway, and configurations (bleeds, flaps).Soooo, you find the runway at the airport, look at the actual temp and it'll give you your max TQ% and your MTOW and your climb limit. If you're actual weight is under the runway and climb limits, you're good to go. You can also "assume" a higher temperature and come up with a reduced TQ%.This isn't really an answer, but that's how it Runway Analysis generally works.

Matt Cee

On page 73 of the JS4100 tutorial, Rob explains that the lower EGT hash-mark nearly always equates to the book-obtained reduced torque takeoff power setting.

Best Regards,

Kurt "Yoda" Kalbfleisch

Pinner, Middx, UK

Beta tester for PMDG J41, NGX, and GFO, Flight1 Super King Air B200, Flight1 Cessna Citation Mustang, Flight1 Cessna 182, Flight1 Cessna 177B, Aeroworx B200

On page 73 of the JS4100 tutorial, Rob explains that the lower EGT hash-mark nearly always equates to the book-obtained reduced torque takeoff power setting.
Not familiar with the JS4100 yet, but in the above stated cases, I understand that the runway lenght is nearly always longer than the required lenght for a balanced reduced torque takeoff power setting, and obstacle climb limit not the limiting factor.Regards,Harry
  • Author
As I understand it, there were no generalized performance tables. Instead, the pilot referenced "Runway Analysis" that was specific to each airfield. There's no way to do that for every runway in FSX.
Understood. What I'm asking for is something simpler, just to get an idea what airports I can get into and back out from. E.g. can I land at / take off from YLHI (Lord Howe Island) with its 2,907' runway at sea level, ISA standard weather, no wind, with a full load of passengers?A couple of generic examples like that to extrapolate from would be great.
E.g. can I land at / take off from YLHI (Lord Howe Island) with its 2,907' runway at sea level, ISA standard weather, no wind, with a full load of passengers?
I don't know for sure, but I would think that the J41 with a full load of passengers would have great difficulty taking off from a runway that is less than 3000 feet long.

Christopher Low

AMD Ryzen 7 9800X3D CPU / 64GB DDR5-6000 RAM / 12GB Nvidia RTX 4070 Super GPU / Gigabyte X870E Aorus Elite Wifi 7 / 1+2TB Samsung Evo Plus M2 Nvme

UK2000 Beta Tester

Yeah, she ain't a DH8C...

  • Author

OK, to be even more specific about the type of information I'm looking for, something like this would be very helpful:* "Landing at maximum weight, ISA standard day, no wind, sea level runway, requires at least X,XXX' ft runway length"* "Taking off at maximum weight, ISA standard day, no wind, sea level runway, requires at least X,XXX' ft runway length"The nice thing about a JS41 sim (compared to a 747 or MD-11) is that you can go to small regional airports - but how small exactly?Thanks,

I landed on Lukla a few time. :( The speed brake and reverse thrust are so powerful that it isn't a problem.Benjamin

OK, to be even more specific about the type of information I'm looking for, something like this would be very helpful:* "Landing at maximum weight, ISA standard day, no wind, sea level runway, requires at least X,XXX' ft runway length"* "Taking off at maximum weight, ISA standard day, no wind, sea level runway, requires at least X,XXX' ft runway length"The nice thing about a JS41 sim (compared to a 747 or MD-11) is that you can go to small regional airports - but how small exactly?Thanks,
Tom,Don't have exact figures, but maybe this is of help.If I had to buy a JS4100, the info in these links at least give me an indication how profitable I could operate the aircraft from smaller airports.http://www.cfmjet.com/pdfs/Jetstream_perfo..._comparison.pdfhttp://www.jetstream41.com/files/J41overview.pdfIn this last link see the very last page of the brochure.Regards,Harry

Interesting information. That suggests that I should be able to operate this plane from Plymouth, England with no passengers and 50 per cent fuel. The main runway is 3840 feet long, although I am a bit concerned about the trees close to one end!

Christopher Low

AMD Ryzen 7 9800X3D CPU / 64GB DDR5-6000 RAM / 12GB Nvidia RTX 4070 Super GPU / Gigabyte X870E Aorus Elite Wifi 7 / 1+2TB Samsung Evo Plus M2 Nvme

UK2000 Beta Tester

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.