PPRuNe Forums

PPRuNe Forums (https://www.pprune.org/)
-   Tech Log (https://www.pprune.org/tech-log-15/)
-   -   MCP ALT setting for visual approach in USA (https://www.pprune.org/tech-log/657984-mcp-alt-setting-visual-approach-usa.html)

hans brinker 17th Mar 2024 21:53


Originally Posted by LOWI (Post 11617760)
Are you sure about that buddy?

LOL, you might want to check some of that attitude.

B2N2 17th Mar 2024 23:24

Can we finally agree? You set the lower of the published Missed Approach Altitude or MSA then await ATC instructions for your altitude assignment?
Which is at least MSA as per the
regs?

galaxy flyer 18th Mar 2024 01:10

Well, it won’t be MSA, but min vectoring altitude. Search the charts for that number.

hans brinker 18th Mar 2024 06:34


Originally Posted by galaxy flyer (Post 11618152)
Well, it won’t be MSA, but min vectoring altitude. Search the charts for that number.

We are talking about what you should use as a pilot before ATC assigns something. MVA is the minimum altitude ATC will assign, depending on where you are. It is not an altitude that pilots should use for terrain clearance. Depending on radar coverage, the MSA could be a lot lower.

galaxy flyer 18th Mar 2024 13:51

Which is why setting MSA is semi-useless, you won’t climb that high even in places like Denver. Set whatever you want, you don’t have a cleared altitude, so it’s not an issue. When you get a clearance, set that altitude.

hans brinker 18th Mar 2024 14:08


Originally Posted by galaxy flyer (Post 11618528)
Which is why setting MSA is semi-useless, you won’t climb that high even in places like Denver. Set whatever you want, you don’t have a cleared altitude, so it’s not an issue. When you get a clearance, set that altitude.

But I think that is the entire problem with this discussion. It should never be a question what I will do if I can't talk to ATC. We have had plenty of unstable approaches, leading to GAs in visual conditions. And with ATC too busy to notice/give instructions, that has led to two near misses for just my airline in the last year that I was told about in recurrent, so who knows how many went unreported. Every visual should have a safe way out that is known in advance by both the pilots and ATC.

Locked door 18th Mar 2024 14:28

In almost every other part of the world you would fly the published instrument missed approach in the event of a go around after a visual approach to a runway. It is also specified that if you fly an instrument approach and then circle visually for a different runway, in the event of a go around you turn the shortest way to join the missed approach of the instrument approach you originally flew.

This means you are guaranteed to avoid terrain and other traffic, and there is no need to talk as ATC know exactly what you will do and will speak to you when they can.

In the USA there is no consensus as demonstrated by this thread. You just point the aircraft at the sky to an arbitrary altitude and hope you don’t hit anything or anyone before you manage to talk to ATC. You can see why some see this as having potential for an accident.

LD

EXDAC 18th Mar 2024 16:21


Originally Posted by Locked door (Post 11618547)
In almost every other part of the world you would fly the published instrument missed approach in the event of a go around after a visual approach to a runway. It is also specified that if you fly an instrument approach and then circle visually for a different runway, in the event of a go around you turn the shortest way to join the missed approach of the instrument approach you originally flew.

This means you are guaranteed to avoid terrain and other traffic, and there is no need to talk as ATC know exactly what you will do and will speak to you when they can.

How does flying a published missed approach procedure guarantee avoidance of other traffic? That may be true in Class B airspace but there may be no guarantee if only class D at the airport and the missed takes you out of the D and under the class B floor.

E.g. KSDL RNAV RWY 21 missed takes you to a hold at AVENT at 5,000 ft where anyone can be without talking to ATC. Floor of B at AVENT is 6,000 ft.

Now let's say there is a broken layer with bases at 4,500 ft MSL. You were cleared for the visual 21 and received no further clearance after going missed. Can you fly the hold at 5,000 ft in IMC or does clearance for a visual approach require you to stay clear of clouds until receiving a new clearance? MSA is 8,800 ft.



Check Airman 18th Mar 2024 20:47


Originally Posted by Locked door (Post 11618547)

In the USA there is no consensus as demonstrated by this thread. You just point the aircraft at the sky to an arbitrary altitude and hope you don’t hit anything or anyone before you manage to talk to ATC. You can see why some see this as having potential for an accident.

LD

There is consensus. The non-US pilots just don’t accept it.

Set the missed approach altitude from the IAP you’re using as a backup. Really not that hard, and it takes away 90% of the guesswork of hypothesising about theoretical problems IF you go missed.

There are other things that generate emails from our safety department regarding visuals.

Check Airman 18th Mar 2024 20:50


Originally Posted by hans brinker (Post 11618047)
I totally agree, and with all your other posts on this thread.

However, it would be nice if there was a published standard heading/altitude for those times that ATC does not "otherwise instruct". I have been in the US for the last 20 years, and this is still a point of discussion, and it really should not be. ATIS advertises visual for a specific runway, and there is no NOTAM that the ILS for that rwy is not available. SOP is to back up the visual with that ILS, and set pattern altitude for the GA.
Was told to GA in BWI due to being too close to preceding traffic. Initially no other instructions were given by tower. Asked 4 times for an altitude, never got an assignment, finally was told to turn south (towards the 1100' towers, 2600' MSA) and contact approach. Approach was very busy, so FO and I agreed we would climb to 2000' before we were able to talk to them. Traffic overhead at 3000'. Obviously there was no plan in place to handle a GA in VMC, and that is not acceptable.
Like you said, ATC is not going to expect us to join the downwind at 1500', so pattern altitude does not apply, and ATC is responsible for providing a safe IFR altitude. So why not publish one?

I agree with your idea. It’d be nice for them to publish a “visual missed” altitude to expect.

I’d bring it up with my safety department for them to run up the chain, but I fear I’d be asked if it’s a solution in search of a problem.

galaxy flyer 19th Mar 2024 00:20

There’s no expectation on ATC’s part that a go-around from a visual is flying the missed approach for some uncleared IAP. Doing so will just make things more confusing. Tower will coordinate a hand-off back to approach, but first they have coord on it. If there’s no traffic conflict just ask for pattern. It’s always amazing how many airline pilots are scared of flying visually without someone holding their hand. Look outside, monitor the TCAS, fly the plane until ATC gives what will be a simple instruction, most likely, “fly runway heading, climb to x,000’, approach 126.x.

Capn Bloggs 19th Mar 2024 01:12


Originally Posted by Hans
it would be nice if there was a published standard heading/altitude for those times that ATC does not "otherwise instruct".

Not the USA but our AIP says this:

​​​​​​​2.14 Go Around and Missed Approach Procedure in VMC
2.14.1 Except as specified in ERSA for specific locations, an aircraft that is required to go around from a visual approach in VMC must initially climb on runway track, remain visual and await instructions from ATC. If the aircraft can not clear obstacles on runway track, the aircraft may turn.

2.14.2 In the event that an aircraft is unable, or does not wish, to land from an instrument approach in VMC, the aircraft must carry out the published instrument missed approach procedure for the instrument approach being flown, unless ATC directs otherwise.
At least the lateral bit's taken-care of. :ok: On our own initiative, we would also set the ILS Missed Approach altitude.

Vessbot 19th Mar 2024 03:44


Originally Posted by Check Airman (Post 11618753)
There is consensus. The non-US pilots just don’t accept it.

Set the missed approach altitude from the IAP you’re using as a backup.

There is no such consensus, nor is there a published reference in the regulations or AIM to do this.

Gin Jockey 19th Mar 2024 05:12

31 JFK , 100% setting 1500ft. Long upwind. Right traffic. Quick PA pointing out sullys “hole in the water” in the hudson. “Look thats where he took off from!”, overfly La Guardia, wide pattern to fly over connecticut, because you can! Slow and early descent to annoy some rich folk on long island. Tell ground ramp don't care where you park.

rudestuff 19th Mar 2024 09:22


Originally Posted by Gin Jockey (Post 11618970)
31 JFK , 100% setting 1500ft. Long upwind. Right traffic. Quick PA pointing out sullys “hole in the water” in the hudson. “Look thats where he took off from!”, overfly La Guardia, wide pattern to fly over connecticut, because you can! Slow and early descent to annoy some rich folk on long island. Tell ground ramp don't care where you park.

This. Why waste an opportunity?

Check Airman 19th Mar 2024 23:00


Originally Posted by rudestuff (Post 11619075)
This. Why waste an opportunity?

If you missed the chance to do it ~4 years ago, I pray for all our sakes that you never have the chance again.


This guy seized the moment though :)

Checkboard 20th Mar 2024 12:56


Originally Posted by Check Airman
If you’re flying a Boeing or Airbus, you’re not going to an airport where you’ll be told to enter the pattern, so we can ignore that part.

What FAA reference is there to exclude Boeing and Airbus pilots from the regs? Seems pretty clear to me - in the absence of instructions, joining the circuit is the standard for visual missed approaches. What would you do at a no-tower airport? (Most of my flying in Australia in airliners was to no-tower airports) - you'd join the circuit and execute a second visual approach.

Check Airman 20th Mar 2024 20:50

Those of us who fly visuals every day have told you how US ATC handles it. Plan your 1500ft pattern or the published missed if you wish.

Check Airman 20th Mar 2024 20:55


Originally Posted by Check Airman (Post 11609872)
You’ll be backing up the visual with an IAP. With the exception of a few months of stupidity at one carrier, every operator has set the missed approach altitude for the IAP. 9/10 times, that’s the altitude ATC will give you on the missed.

You do NOT fly the “published missed” for the backup approach.

———

*The few months of stupidity came from a desk pilot who thought setting 1500ft was smart. Theoretically correct, but practically stupid. If you go around in Boston, you won’t be told to join the pattern and report on base.

As an aside, does anyone know why PPRUNE removes the apostrophes from some posts? When I go to quote my original post, it shows apostrophes, but not in the original post.

EXDAC 20th Mar 2024 22:32


Originally Posted by Check Airman (Post 11620235)
Those of us who fly visuals every day have told you how US ATC handles it.

Would you please tell us (or at least me) again. I scanned back through some of your earlier posts but I seem to have missed the authoritative answer.

Since I fly near KSDL quite often, and do my best to stay out of the way of all the biz jets, I'd like to know what they will do on a missed visual to 21.


All times are GMT. The time now is 07:00.


Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.