OnCourse Software

I am flying an A2A Lockheed constellation and have tried to avoid getting very low approach speeds assigned by PF3 for my approach. I was being assigned app speeds of 140 and sometimes 130 knots, 20-30 miles or more from the airport. I went into the settings in PF3 , and changed the approach speed on the select a flight plan page to 180 knots in the aircraft profile for the Connie. I also went into the ini tweaks and checked final approach speed and set it at 40. This is supposed to add the 40 to the aircraft cfg stall speed of the Connie of 127 from the connie I am flying , to result in 167. I just flew an approach now and was assigned 150 knots for approach speed. Am I doing something incorrectly, and if no, can I just turn off the approach speed assignments by ATC?

bobsk8 wrote:

I am flying an A2A Lockheed constellation and have tried to avoid getting very low approach speeds assigned by PF3 for my approach. I was being assigned app speeds of 140 and sometimes 130 knots, 20-30 miles or more from the airport. I went into the settings in PF3 , and changed the approach speed on the select a flight plan page to 180 knots in the aircraft profile for the Connie. I also went into the ini tweaks and checked final approach speed and set it at 40. This is supposed to add the 40 to the aircraft cfg stall speed of the Connie of 127 from the connie I am flying , to result in 167. I just flew an approach now and was assigned 150 knots for approach speed. Am I doing something incorrectly, and if no, can I just turn off the approach speed assignments by ATC?

You did read the instructions in options#2 / Advanced options INI tweaks / Approach / ?, didn't you? In your case set it to zero as the final approach speed of the Connie is quite low.

vololiberista wrote:

bobsk8 wrote:

I am flying an A2A Lockheed constellation and have tried to avoid getting very low approach speeds assigned by PF3 for my approach. I was being assigned app speeds of 140 and sometimes 130 knots, 20-30 miles or more from the airport. I went into the settings in PF3 , and changed the approach speed on the select a flight plan page to 180 knots in the aircraft profile for the Connie. I also went into the ini tweaks and checked final approach speed and set it at 40. This is supposed to add the 40 to the aircraft cfg stall speed of the Connie of 127 from the connie I am flying , to result in 167. I just flew an approach now and was assigned 150 knots for approach speed. Am I doing something incorrectly, and if no, can I just turn off the approach speed assignments by ATC?

You did read the instructions in options#2 / Advanced options INI tweaks / Approach / ?, didn't you? In your case set it to zero as the final approach speed of the Connie is quite low.

I did read the instructions that you referred to, but I guess you didn't read my complaint carefully. I do not want ATC to tell me to slow down to a low air speed, especially miles and miles away from final approach. I want to fly up to about 8 miles from the airport are around 180 knots. PF3 is telling me to slow to 140-150 knots way too soon. I do not want to slow to that speed, so I have to listen to the constant nagging about my airspeed being too high. How I can I stop the nagging from happening?

According to the instructions for approach speed that you referred to in the ini, if you use the final approach speed in the Flight profile presets, which I did and set to 180 knots, that is supposed to override anything from the ini. As I stated in my original post, I also set Final App Speed at 40 in the ini approach, and according to the instructions it is supposed to add the aircraft.cfg flps up stall sped of 127 + 40 to 167, and that doesn't work either. I stated every bit of this in my original post....

I use the preset in the select a flightplan page and it works fine. Are you sure you have saved the preset with a name, and have selected it when you processed your flightplan. I tick the box "set/use as default to make sure it always gives me 160 kts on final.

Still doesn't explain why neither of the two methods worked though. Maybe Dave or someone brighter than me can look at the log files.

pschlute wrote:

I use the preset in the select a flightplan page and it works fine. Are you sure you have saved the preset with a name, and have selected it when you processed your flightplan. I tick the box "set/use as default to make sure it always gives me 160 kts on final.

Still doesn't explain why neither of the two methods worked though. Maybe Dave or someone brighter than me can look at the log files.

Yes I use presets all the time because I usually fly the same aircraft for weeks. Try an experiment. Set you approach speed at 200 knots in your preset, and watch what happens on approach.

I always used presets (on the select flight plan page) with approach speeds of 170, 180 and 190 kts. It always worked as it should. Recently I'm not setting a final approach speed in the profile any more but use the setting on the "ini tweaks" page instead, adding to the FlapsUpStallSpeed. That also works as it should for me.

So it would be interesting to know why it went wrong for you.

RALF9636 wrote:

I always used presets (on the select flight plan page) with approach speeds of 170, 180 and 190 kts. It always worked as it should. Recently I'm not setting a final approach speed in the profile any more but use the setting on the "ini tweaks" page instead, adding to the FlapsUpStallSpeed. That also works as it should for me.

So it would be interesting to know why it went wrong for you.

Maybe these two entries one in the ini and the other in aircraft profile are interfering with each other. I think I will try the one in ini alone and see what happens.

bobsk8 wrote:

RALF9636 wrote:

I always used presets (on the select flight plan page) with approach speeds of 170, 180 and 190 kts. It always worked as it should. Recently I'm not setting a final approach speed in the profile any more but use the setting on the "ini tweaks" page instead, adding to the FlapsUpStallSpeed. That also works as it should for me.

So it would be interesting to know why it went wrong for you.

Maybe these two entries one in the ini and the other in aircraft profile are interfering with each other. I think I will try the one in ini alone and see what happens.

In theory the speed in the "profile" should override the ini tweak. I wonder if there is some confusion in that the ini tweak if unchecked will default to 140kts. for props. If it is checked, then your "profile" should override any settings. I have mine set to both zero and checked so the speed set in the profile works corrrectly.

vololiberista wrote:

bobsk8 wrote:

RALF9636 wrote:

I always used presets (on the select flight plan page) with approach speeds of 170, 180 and 190 kts. It always worked as it should. Recently I'm not setting a final approach speed in the profile any more but use the setting on the "ini tweaks" page instead, adding to the FlapsUpStallSpeed. That also works as it should for me.

So it would be interesting to know why it went wrong for you.

Maybe these two entries one in the ini and the other in aircraft profile are interfering with each other. I think I will try the one in ini alone and see what happens.

In theory the speed in the "profile" should override the ini tweak. I wonder if there is some confusion in that the ini tweak if unchecked will default to 140kts. for props. If it is checked, then your "profile" should override any settings. I have mine set to both zero and checked so the speed set in the profile works corrrectly.

I just tried having ini unchecked, Profile set to 180 knots and 15 miles from airport, it told me to slow to 140 knots. I am now going to try your suggestion of leaving the ini Final app speed checked and set to 0.

Just tried it with ini set to unchecked and zero and aircraft preset set to 180. Soon I was given landing approach, I was told to slow to 140. Guess I will have to use PATC with this aircraft.

The only other thing it could be is that because the A2A aircraft is a Prop aircraft, that PF3 assigns it the default turboprop speed of 140, regardless of what the aircraft profile or ini is set at, which of course, doesn't work.

On this debug file, I did not follow atc once I was given the approach speed of 140, I just landed.