Vga Speed

[FlyingTinCans]

Hey Guys,

Ive recently come across the Vga (Go-Around) speed, does anyone have a definition?

My companies SOP's state that a Missed Approach should not be flown at less than Vref (for engine failure purposes).

No mention of a speed that a Standard Go-Around should be flown. :confused:

Regards

[FE Hoppy]

Single engine go around is calculated at V approach climb with gear up and flaps in appropriate position.
Rejected landing is is calculated with 2 engines landing flap gear down and landing climb speed.

Two engine missed approach is not a limiting maneuver. My jet uses Vref +20 as a convenient figure.

[FlyingTinCans]

Two engine missed approach is not a limiting maneuver

Thats what I thought, which is why I thought Vga must mean something else

Ive searched on google and pprune, and there is no mention of 'Vga' anywhere

Anyone worked for an operater who uses Vga?

[Death Pencil]

Yeah, we use Vga...

It's the speed to fly for a OEI go-around.
There will be different speeds for different weights, flap settings.
For us, look at the speed card for the go-around flap setting (1 stage up); eg. flap 15 approach, look for the flap 10 Vga.

From the fcom; "maintain airspeed not below vga" (OEI G/A)
It's about Vref - 4.

Good idea to brief it in a OEI approach brief (sim!).

:}

[411A]

Keep it simple.

Vref +10 works with most aircraft....well, at least the older ones:}

[FE Hoppy]

I'm not familiar with Aussie rules but in EASA/FAA world what you are explaining is known as Vac ( approach climb speed) it ensures comliance with climb gradients.

411A not a good idea. Stick to the book mate.

[BelArgUSA]

I love all these V speeds that you gentlemen gargle with...
xxx
Not enough that I had to blow my mind studying in last century.
And suffer a about V1, VR, V2, Vref...
Some were in my FAA books.
Then I learned some more from my airline GOM and AOM...
And every Ppruner comes now with a few new V speeds and definitions.
And do not forget some abbreviations I fail to comprehend.
Lucky I finally retired, you all exceed my inlet RED line.
xxx
How about a Vntf... V for NOT TOO FAST.
And a Vcfmfp - V CRUISE FOR MAX FLIGHT PAY...?
xxx
I plan to install a ETPD in my bathroom. Electronic toilet paper dispenser.
:E
Happy contrails

[Death Pencil]

BelArgUSA,
Agreed, there are a lot of V speeds / acronyms out there.....
But Vga isn't something we just made up. :ugh:
It's one used by our company, so probably worth knowing what it is, and when to use it... wouldn't you agree?

FE Hoppy,
Could well be... likewise, I'm not sure about EASA/FAA.

[BelArgUSA]

Death Pencil - can you see the grin on my face...?
xxx
For heaven's sake, I know all airlines have their jargon, and codes, and...
But seriously, while Vga is clear to you, I call it Vref+10.
I think Vref+10 could be understood by (almost) any pilot.
We all agreed to spique incliche... But often need to translate each other.
Some of us speak Aussie, Kiwi, Yank, Pom's Cockney or from Yorkshire.
Then we impress ourselves with our own airline's jargon. I smile...!
At PanAm we had Vref, Vat and Vth (V Tresh)...
We had bar fights with TW guys (Tiny Weenies).
TW said "Landing Preliminary Ck-List", we call these Approach Ck-List.
And avoided Speedbird guys, their mustaches dipping in warm beer.
xxx
Hey, even in my rocking chair, I love to learn... but let me smile.
Go for Vga then. And cheers for a Vic Bitter...
Now I know how to spique engliche to a QF pilot...
xxx
:}
Happy contrails

[FlyingTinCans]

But seriously, while Vga is clear to you, I call it Vref+10

Just to confuse us even more, Vga at this operator is Vref-10 !

:confused:

[FE Hoppy]

Not at all confusing.

GA requirements OEI dictate Vac
Vref has to not only respect margin above stall but cannot be lower than V landing climb so if your jet struggles to make the appropriate climb with gear and flaps down the solution is to use a higher Vref speed.


Here is the bit from CS25:

Landing climb: all-enginesoperating
In the landing configuration, the steady gradient of
climb may not be less than 3·2%, with –
(a) The engines at the power or thrust that is
available 8 seconds after initiation of movement of
the power or thrust controls from the minimum flight
idle to the go-around power or thrust setting (see
AMC 25.119(a)); and
(b) A climb speed which is –
(1) Not less than –
(i) 1·08 VSR for aeroplanes with
four engines on which the application of
power results in a significant reduction in
stall speed; or
(ii) 1·13 VSR for all other
aeroplanes;
(2) Not less than VMCL; and
(3) Not greater than VREF.

[FlyingTinCans]

Well if Vga = Vac its not confusing no.

But why a UK/JAR/EASA operator would call it Vga and not Vac is! :ugh: