Ovation go around

[ovation0219]

I have a button just to the left of the throttle labeled GO AROUND. Does anyone else's Mooney have this button if so does anyone know what it does?

[Bob]

I have no experience with the Go Around button yet.  But if I remember right, is used when going around, from an instrument approach when autopilot is being used.  I remember the information was in the autopilot pilot manual for my 231 with Century 41.  You may want to start there?

[ovation0219]

I have searched the POH and the autopilot handbook. I have tried the button and cannot see anything it does.

[rbharvey]

It disconnects the autopilot and commands 10 degree nose up on the flight director. It will also sequence the MAP on the garmin if I recall correctly (ie you dont have to push the OBS to unpause the approach

[rbharvey]

It disconnects the autopilot and commands 10 degree nose up on the flight director. It will also sequence the MAP on the garmin if I recall correctly (ie you dont have to push the OBS to unpause the approach

[rbharvey]

It disconnects the autopilot and commands 10 degree nose up on the flight director. It will also sequence the MAP on the garmin if I recall correctly (ie you dont have to push the OBS to unpause the approach

[DaV8or]

Quote: ovation0219

I have a button just to the left of the throttle labeled GO AROUND. Does anyone else's Mooney have this button if so does anyone know what it does?

[rbharvey]

Not so in a Mooney, especially that vintage

[carusoam]

O-0219,  I'm with RBHarvey on this one....  I believe that is all about a missed approaches.  "go around"  seems somewhat mislabeled...  I had read about these modern niceties during IFR training.  It is probably easy to find in your manual for the GPS. 

Be aware how to use it so the automatic sequencing happens in the right place.  You would not want to head for the hold before reaching the MAP or short cutting any of the missed approach procedure.

My '94 M20R has no such luxury for its KLN 90B.

-a-

[Bob]

I hope this helps a little bit!  I found this in the Century autopilot book.  Note: my switch is also panel mounted.  Please keep in min this is from my 1980 231. 

[roundout]

What avionics and autopilot? There could be a lot of different answers. 

FWIW, the GFC700 WILL fly the missed if you set it up properly. You do have to re-engage it though. The Go Around button disconnects the autopilot. Once you get the airplane cleaned up and climbing, you can re-engage the AP and it will fly the rest of the missed. 

[carusoam]

Roundout...

O 219 was indicating a 530 Waas and KFC 225 on this other thread that seem to start at the same time....

http://www.mooneyspace.com/index.cfm?mainaction=posts&forumid=3&threadid=1585

[jlunseth]

On the KFC's, the Go Around button disconnects the AP.  In my AP, which is a KFC 200, it also results in a FD display of a 6% nose up pitch.  Note that it does not command a nose up attitude, because the AP is disengaged, so the plane does not go nose up unless you do one of two things:  (1) you pitch the plane up to match the FD, or (2) you re-engage the AP, in which case it follows the pitch on the FD. 

I would not assume that the Go Around switch has any effect on your Garmin.  Am not an electronics expert, but it is my understanding that the Garmin sends information to the AP, but not the other way around.  Maybe in an integrated glass panel, or if a really smart avionics guy did the installation, there would be a way for the Go Around switch to sequence the Garmin to the MAP, but I would not bank on it. 

[ovation0219]

But with the Garmin 530W i select the missed and let the autopilot do its thing. I just see no need for this feature.

Thanks

[carusoam]

You mentioned in one of the threads that you simply connected a few wires between the two devices and told each device what to expect from the other devices.

Is it possible...

It seems that when these devices were new, there was intention of the original manufacturers to connect the full automation of the 530W, gpss and the A/P.  Unfortunately, the complete system was not ready at the time of the construction of your hull.

Over time, the hardware and/or operating systems were updated and the final capability has been put in place. 

Sounds like the go around feature is a relic to the way the hardware was originally installed and not so much how it operates today?

 

[DonMuncy]

Ovation 0219 says that with his Garmin 530, he selects the missed and lets the A/P fly it.  I am not certain I know exactly what he is saying, but I think it is important enough to poke my nose in.

On the 430 (and I assume, the 530), hitting the OBS, results in the unit taking you direct to the fix (they call it missed approach holding point) used in the missed approach. Very often this is alright, but it DOES NOT assure terrain clearance. To keep from killing yourself, you need to follow the published missed approach procedure to where it says "then to X fix" . Only then is it safe to punch the OBS and fly (or let it fly) direct to the fix.

If I misunderstood, just ignore me.

Don

[Mcstealth]

Oh sure, we all are going to poke holes in a Muncy explanation.

[Daniel]

It is also common practice in high performance aircraft to press the Go Around button before take off.  This presents a flight director display that is straight ahead and an appropriate pitch up attidute for departure.  Fly that attitude with gear coming up, and if you hold that attitude you will accelerate and raise the flaps.  Engage the autopilot and then engage the appropriate heading or nav mode, and as I accelerate to climb speed in that attitude, I then engage FLC to climb at that speed.

[ovation0219]

Thanks this is the first use that makes sence. using it to preset the FD would be useful.

[jlunseth]

To add to the Muncy explanation, neither the GPS nor the GPSS are going to give you the altitude component or climb rate, they will only give you the lateral guidance.  If you hit the GO AROUND button (which disconnects the AP and creates the FD pitch up display), then hit the OBS on the 430 (which sequences to the next missed approach fix after the MAP), and then engage the AP, the plane will climb at the 6% pitch up.  In my particular panel, to fly the lateral part of the missed, I can either keep the GPSS engaged, in which case the GPS/GPSS + AP fly the turns to the next waypoint automatically, or I can disengage the GPSS, dial the course in on the HSI per the MSG on the 430, put the AP in NAV or APPCH (either will work for this), and let the AP fly the dialed in course to the waypoint.  I like using the GPSS myself because if there are more than one missed waypoint, the GPS/GPSS/AP combination will automatically fly the sequence.  In fact, if I ask real nice it will even do the entry to the hold (I had it do that once, but must not have been nice enough to it lately because it is making me do this manually).

And PS there is a probably a really good reason, come to think of it, why the system does not do all this automatically, and that is because more often than not, at least around my area (Flying Cloud) we get specific missed instructions from the controller and almost never fly the published miss.  Works really well for this to hit the GO AROUND button, put the AP in Heading mode (GPSS disengaged), and use the Heading Bug and AP to fly the missed while the AP handles the pitch up.  At least, that is what I do.