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Famous more than 4500 fpm

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EHM-1442 Luis:
@ Robert

You are right, i'm trying to fly the 763 from Level-D and it is, what is happening to me with VNAV engaged.

1 - Easly pass the 4500fpm rate. To correct ,when i see the needle approaching the 4000fpm, i change to VS and reduce the vertical rate.
2 - When in cruise level, some changes in the winds push the aircraft to overspeed. To correct that when i see the speed increasing and passing that one on FMC, i reduce speed until the winds stabilize.

And so i have a lot of penalties and some crashes, until learning how to fly the Level-D 767 with Propilot.

Aircraft correctly configureted and overspeed, remark the crosswind with 91.

EHM-1001 Robert:
Well, I seen it only at approaches. During the takeoff it is not a problem. Just select Climb-1 or -2 and it will climb smoothly.

But at descend, it usually gave too short distance himself for a nice approach, and during the STAR, it can make very rapid descends. If you fly online its easier, because ATC tells you "Descend to be at 12000 over...VOR" If you program it as restriction into the FMC, it will give a much longer STAR than the default, and you probably survived the quick descends ;)

BTW, I used to set 29.92 at Transition altitude, or at FL100, just after turned off Landing Lights. I do these 2 always at once. Then I will not forget it at FL180 :P

EHM-1703 Philip:
Do you have a paid version of FSUIPC Luis? Are you using Wind Smoothing? Does this happen when flying onlline or offline?

FSUIPC Offers the ability to smooth out wind changes but unfortunately you have to pay to register the product first. This slows down the rate at which winds change and therfore reduces the risk of Overspeed.

If it happens when flying online, you can turn wind smoothing on in the IVAP configuration utility under the weather section. this does help, but does not completely remove it. If you are cruising at a cost index of 100 you should have enough of a buffer to allow for the IVAP wind changes once you have wind smoothing enabled.

As for the 4500 fpm climb descend problems.... Here are my tips.
I find it comes down to configuration and maintaining speeds manually until 1,000 feet. I do not engage VNAV until 1,000 feet and I manage my speed to VR+10(ish) manually. Derated takeoffs should always be used where possible so if your load allows reduce your take off settings, this helps. (Especially on the 737!) Set manual limits on your Flight Plan. Reduce the risk of  of climbing or descending too steeply by reducing altitude steps between way points on departures and arrivals.

Hope this helps

EHM-1442 Luis:
The screenshot was taken on the flight EHM-4340 (ENTC-ESNS),flying online and i repeated this flight 3 or 4 times and the aircraft  always entered overspeed more or less in the same place (same distance from departure).:o

As much as possible, i fly online(IVAO) and with Propilot.

I have the free version of FSUIPC, the wind  smoothing is turned on in the IVAP configuration, but it was not enough, maybe because I was cruising at a cost index of 90.

At the descends and to avoid the 4500fpm penalty, i use to start descend at 40nm from the TD, and it descend softly with a 1000fpm-1500fpm rate.

I use a lot of derated takeoffs, but we must pay attention, because if we are too heavy, it 'll be a problem. I crashed the aircraft taking of from ENTC on account of this....:> and Propilot confused my crash report.....eheheheh.

In my opinion the problem here and as we can see on the screenshot the VNAV is unable to respect the FMC speed limit, when strong crossed winds happens, i was at cruise level (FL320) with a speed limit 0.802 in the FMC and the speed indicator is showing 0.907 and it was coming down when i take the sreenshot, if i remember it went until 0.932.......:>

Summarizing, to fly this beast With Propilot (another beast...eehehh:>),we cannot read the newspaper at Cruise Level, we must be always with attention reading the instruments.

Sorry for this long post, but i think that we can all learn with each others.

Luis
LPPT Hub pilot

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