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  #11  
Old 06-03-2019, 01:10 AM
BobTurner BobTurner is offline
 
Join Date: Dec 2011
Location: Livermore, CA
Posts: 6,797
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Quote:
Originally Posted by RV8iator View Post
A little background on the EXECUTE button.

Prior to having it you could get into real ?legal? trouble because the autopilot would intercept the glideslope and descend. If you had been cleared for the approach this was OK. If not you could have been setting yourself up for an altitude violation.
it.
Jerry, I agree the PIC is responsible for everything - but isn?t this also an ATC failure? I didn?t think they were supposed to ever have you intercept glide slopes from above.
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  #12  
Old 06-03-2019, 09:28 AM
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Bayou Bert Bayou Bert is offline
 
Join Date: Sep 2012
Location: Prairieville, LA
Posts: 221
Default Success!!! Super Thank You

After reading the post this morning, couldn't wait to get to airport
and jump in Pearl to go try recommendations. I flew exactly as I did
on Friday, approach IAF from NNW, loaded the approach in 650 and
activated, armed the EFIS as shown in pic above hit exit.
Yellow activate button present but now in GNAV, plane turned toward
IAF, flew the tear drop and when we straightened out on final I hit the
activate button. Flew the approach perfect.
Thanks to everyone for the help with this lack of knowledge.
Just shows the power of the Vans Forum
Jerry and Bob thank you very much for the explanations and help.
Now I can get on with the training.

Below shot of Pearl sitting in front of hanger at Hooks in Houston
on recent trip.
Thanks a Million!!!

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Bert
RV-9A ?Pearl?
Working on Instrument ticket
Donation Done for 2020
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  #13  
Old 06-03-2019, 12:22 PM
RV8iator's Avatar
RV8iator RV8iator is offline
 
Join Date: Nov 2006
Location: Saint Simons Island , GA
Posts: 1,523
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Quote:
Originally Posted by BobTurner View Post
Jerry, I agree the PIC is responsible for everything - but isn’t this also an ATC failure? I didn’t think they were supposed to ever have you intercept glide slopes from above.
When we noticed it happening we were below glideslope but well away from airport. Level at 3000 feet with 3000 set in the altitude window. Glideslope came down and a/p captured and started descent without clearance from controller.
Big picture scenario we discovered was the plane would depart a selected altitude even if not directed. In other words it would just descend whether you told it to or not. It did happen on an actual flight so not out of the realm in busy IFR world. It was 100% repeatable.
Many discussions about it, but an autopilot should never do something that would get you violated or worse with no pilot input. Hence, the a/p now will not fly away from a selected without the pilot giving it permission.

The autopilot will not capture from above, nor will a controller direct you to.
__________________
Jerry "Widget" Morris
RV 8, N8JL, 3,000+ hours on my 8.

VAF #818
Saint Simons Island, GA. KSSI
PIF 2008, 2009, 2010, 2011,2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020

I just wish I could afford to live the way I do

Last edited by RV8iator : 06-03-2019 at 12:24 PM.
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