Currently simbrief will warn you that structural MTOW is exceeded on the dispatch page however, not MTOW for runway length. For particular aircraft where simbrief can calculate takeoff performances it will note in the OFP “MTOW exceeded for runway length”
I’m requesting that this information be displayed on the dispatch page as well so we can quickly be notified and adjust our load in accordance
I can’t say I’ve had an issue showing this. Just for giggles, I used the dispatch page to plan a take-off for a Boeing 747-400 at maximum take-off weight off of 4R at JFK, and at the top of the page, it says “Maximum runway weight exceeded: 825,235 lbs”. If you’re looking at the formatted output, it says under take-off limits that it’s limited by field length. In both formatted and raw output, at the bottom, it says “Takeoff Not Authorized Maximum runway weight exceeded.” Am I missing something.
This never appeared for me when I dispatched a flight with the md82.
However in the takeoff calculation portion of the OFP and with the EFB calculator I was beyond MTOW for the runway I had planned on departing
This page doesn’t do it?
It does, but that’s not the request. Most people don’t use the detailed takeoff performance tool until in the aircraft after all passengers and cargo have loaded, at which point knowing you’re overweight for the selected runway is a little… impractical.
A remark in the OFP or on the Flight Briefing page would allow you to adjust payload before virtual boarding.
Regards,
Tim
Actually, when I work a flight from A to B, that is the first thing I do, granted that’s my techcedure. Let’s say I’m doing a 767-300 from LFPG-KMEM.
I know I am going to plan to takeoff from LFPG 09R. So with that in mind, what max weight can I lift from 9R? My APS will tell me that. I dont care about derates, that’s a crew function. In the current SBF Perf Tool, It’s like me telling it I want to takeoff at Struct MTOW of 408.0. Before I have even calculated a route, after the MTOW calculation I know I can lift 408.0 from LFPG off the runway, which happens to be my structural MTOW.
I do the the same thing for my landing runways, including alternates, redispatch airports, EROPS alternates, and so on. For KMEM, I can land at 326.0, which is structural MLDW.
Once all my max weights are known, then I calculate a min fuel track. On this flight, I can eyeball and know I wont have a weight problem with a payload of just 85 and change, but the flight planning system will calculate for me what Pan Am called an adjusted Max Dry Tank Weight - what ZFW could I load onto my airplane and not bust the Max TOW based on how much gas I’m loading.
The structural MZFW for my airplane is 309.0, but with all the gas I am putting on, if I load to 309.0, I’m busting a weight limit. But, if I keep my actual ZFW below in this case 281104, I know I wont go over my MTOW (408000 MTOW - 126900 loaded fuel = 281100.
If I were taking off of LFPG 09L, with its runway limit is 404.7, that would mean my adjusted MZFW would be roughly 277.8; and with a PZFW of 267.4, I’m still good if I had to. Yes the pilots might bitch with the reduced stop margin, but they’ll get over it.
Of course, but you’re doing this professionally 
I do it as well if I have time, but more often than not, once I decide to fly in the sim, I don’t like spending too much time on the flight planning stage if I can help it.
Cheers,
Tim
