OnCourse Software

Hi,
in the last trip I haven't received the descend instruction when I was close the T/D point in IFR flight at cruise level. The initial clearance instructions and next were right untill the T/D. Then nothing descend.
As I descended myself, PF3 ask me for mainaining the cruise level as in the clearance but in that way I couldn't landing to the final destination.

What is wrong in my setup?

Best Regard
Franco Lorenzini

You've already posted this in another thread, so I will repeat my reply

I can't see anything wrong with your setup... just pilot error. You began your decent before ATC told you to. Why would you do that? And then when they nagged you to maintain FL 360 you ignored them!

Thak you for your replay
I will fly waiting for PF3 instruction and I will inform you.

Best Regards
Franco Lorenzini

Aviator68 wrote: *

Sun Oct 23, 2022 1:57 pm

I will fly waiting for PF3 instruction and I will inform you.

PF3 doesn't know anything about your FMC's TOD and you shouldn't leave cruise altitude without ATC clearance. Be sure to review the waypoint altitudes on the PF3 flight plan page after you have loaded the flight plan but before you connect PF3 to the sim. For the climb phase these altitudes are not critical and can usually be left unchanged, because PF3 will step you up to cruise. However for the descent phase the waypoint altitudes are important and PF3 follows the descent profile on the flight plan page. If you want to start down sooner or be at a specific altitude at a particular waypoint, make the adjustments on the flight plan page. Also when you make a change, PF3 does NOT change the altitudes of nearby waypoints, so hover your cursor over the waypoint names to check the distances between waypoints, and adjust the altitudes so you have a reasonable descent profile.

Hi,
1th) thank you for your suggestion.
I flaw again ( LIPZ-LIMF ) and this time I have waited the cleareance to descend after T/D, meanwhile the PMDG 738 descend profile warn me to descend. I have still waited but the PF3 was silent. So I have had to decide to descend but was to late because when I arrived near the airport I was almost 5000 feet higher to land safely. I made an holding pattern and then I landed like I wanted. Also for all the descend flight path the air breake was out continuosly. It is no a correct way to fly. ( monitor debug_1)
Some months ago I haven't this kind of problem with PF3 and I don't know what is wrong.

2d) HI flaw again on the same route ( LIPZ - LIMF ) and the ATC has cleared me to FL100. And the ATC didn't instruct me to climb so I violated the restriction roule on that route present on my ( VIC abobe FL120 ) . I abort the flight. Why this behavior? ( Monitor debug_2)

Could you help me please?

Thaks and regards
Franco Lorenzini

1. Remove the first 3 waypoints from your flight plan and use PZ601 as your first. The first three are far too close to your departure

2. ditto

Let's get the flight plan correct and then you shouldn't have any issues

Hi,
I made other flight following the atc instruction and I arriveed to ther airport with almost 5000 feet higher than the correct altitude to let me landing.
I have had to join a holding path the decrease the altitude before landing.

I ask you for knowing where is my fault to use the atc or setup up the descent profile.
I used the pmdg 738

Thak you
Franco Lorenzini

Aviator68 wrote: *

Sat Nov 19, 2022 4:33 pm

I made other flight following the atc instruction and I arriveed to ther airport with almost 5000 feet higher than the correct altitude to let me landing.
I have had to join a holding path the decrease the altitude before landing.

If you want to descend prior to instruction by ATC you can always request a lower altitude from them.

John

Thank you for your idea,
I will try even if seems complicated to manage.

Is it possible to correct the parameters of descent path in PF3 to have a less sloping descent profile?
Or othewise is it possible to add a function to request to atc to start the descent path before the setup point in PF3?

Best Regards
Franco Lorenzini

The reason you are having a problem is you have waypoints much too close to the destination airport (LFMT). It looks like you included a STAR in your flight plan, which is usually not advisable when flying in Europe. For best results your last PF3 waypoint should be about 25-30 miles from the airport. You can use the waypoint removal feature on the PF3 flight plan page to remove waypoints that are too close. For your current flight, I would suggest removing (on the PF3 waypoint page) all waypoints after VALAG, which is about 25 miles from the airport. If the STAR box at the bottom of the SID/STAR page is checked before the flight, as you have it now, you will be cleared to descend to 3000 and fly the approach at pilot's discretion, so you can fly the procedure in your FMC. If the STAR box is NOT checked, PF3 will begin vectoring you after you reach VALAG and you will not fly the rest of the procedure in your FMC. The choice is yours. If you are landing in mountainous terrain it is probably better to fly the procedure rather than being vectored.

See Section 20.5 in the User Guide for more information on SID/STAR use in PF3. Since SIDs and STARs in Europe are usually short, it is best in most cases to leave them out of the PF3 flight plan (or remove them on the flight plan page).