What are the numbers given to you by the tower when you takeoff?

[SnowTiger]

While I misquoted or mis-stated that QFE is the Altitude above sea level of the Runway, I beg to differ with you Effte.

QFE ...is the Atmospheric pressure at aerodrome elevation (or at runway threshold)

QFE allows us to read height above the runway.

 

In fact, if you will simply refer to the handy links I provided in Post #17, all the mentioned Q Codes are defined and explained in detail.

The last link tells why these different standards can be confusing and solutions some ATC's and Pilots use to reduce of not eliminate confusion.

[X93355]

 

QFE

 

.

 

No offence taken : ) We take QFE as the highest point of the runway not necessarily the threshold.

[effte]

I beg to differ with you Effte.

QFE ...is the Atmospheric pressure at aerodrome elevation (or at runway threshold)

QFE allows us to read height above the runway.

 

In fact, if you will simply refer to the handy links

 

Exactly which are the facts you contend?

 

It's not me you are disagreeing with, but rather ICAO. The only way you can effectively disagree with ICAO is to live in an exotic place like N Korea or to have your country's regulatory authority file a point of non-compliance in your national regs. ICAO write The Book. While everything you can find on the net is generally true and factually correct, I'd go with the ICAO definition in this case.

[effte]

No offence taken : ) We take QFE as the highest point of the runway not necessarily the threshold.

Same here. Unless "we" means "me and my good chums here at the offices in Montreal" it's not something "we" are free to define. If you do work in Montreal, you should be updating your publications to contain that definition rather than spend your time posting in forums... ;)

[Fakum]

I had an incident last night where I requested taxi to runway, I was authorized to taxi to runway 14, when I got there, I requested takeoff, I was authorized to do so, then as I was about halfway down I seen an F15 taxiing out on the opposite end. he obviously did not have his radio on and had no idea someone was taking off, and he was not even taking off from in the correct direction, fortunately I was able to get wheels up prior to impact.

 

Then I heard someone ask about the radio on teamspeak, and someone said dont bother, no one uses it,,, I disagree. Once airborne I turn it off until I RTB

[Warthog_Farmer]

Finally, there's standard pressure - QNE (not officially defined in ICAO Doc 8400) - which gives you your uncorrected pressure altitude, independent of any geographical location. This is nice when separating traffic by altitude

 

Just to be picky since you picked other guys up ;) - but back when I was a trainee controller we were taught of this mysterious QNE and, of course, have never needed it since...

 

QNE is the altimeter reading when you are on the airfield with altimeter set to 1013/29.92 depending on your IQ ;)

 

Standard Pressure Setting (SPS) is a better title for the definition you gave... Or in laymans terms we use Pressure Altitude or Flight Levels (for separation by altitude)

 

I believe QNE is mostly used in high elevation airfields where your sub scale cannot wind off low enough for the QFE or if you're unfortunate enough to have your altimeter frozen on 1013 on arrival at destination - not that this is relevant at all to the OPs question but that's what happens when someone mentions Q codes

[effte]

QNE is the altimeter reading when you are on the airfield with altimeter set to 1013/29.92 depending on your IQ ;)

 

Standard Pressure Setting (SPS) is a better title for the definition you gave... Or in laymans terms we use Pressure Altitude or Flight Levels (for separation by altitude)

 

Ah, so I should have written something along the lines of:

 

Finally, there's standard pressure - QNE (not officially defined in ICAO Doc 8400) - which gives you your uncorrected pressure altitude, independent of any geographical location. This is nice when separating traffic by altitude.

 

(My boldface.)

 

Gee, I wish I would have thought of that. ;)

 

I believe QNE is mostly used in high elevation airfields where your sub scale cannot wind off low enough for the QFE or if you're unfortunate enough to have your altimeter frozen on 1013 on arrival at destination

 

I do not believe it is ever used for that. If you can't go to QFE when manoeuvering for takeoff/landing, you'd use QNH instead. Using flight levels would mean constantly having to apply a correction to your altimeter reading in order to know your altitude over the ground.

 

If the altimeter is frozen, it is broken. I'd use the backup, present even in most spam cans. :)

 

Cheers,

/Fred

Edited November 5, 2014 by effte

[Warthog_Farmer]

Yes you are quite right for using the QNH in that example. 1:30AM isnt the best time for thinking straight

 

Anyway - to try explaining again - the QNE is not a pressure setting it is a figure in ft which gives the airfield elevation above 1013 on the subscale. It is used where you cannot wind off the altimeter low enough in extreme low pressures (Not QFE

[Cp]

btw 300 means 30.000ft

Im guessin the sky is cleared so that you can keep climbing up to this alt without hitting trafic..? Dont think it means that you have to climb to 30.000ft.

 

Edit: This is just how I understand it from watching youtube videos, reading etc etc.. Please correct me if Im wrong!

 

No, If the ATC meant 30 000 feet it would say "flight level 300".

The ATC in this game is Russian no matter what side you are playing on or what language the ATC actually is talking in. In Russian aviation they use the metric system so when the tower says 300, it means 300 meters (about 1000 feet).

 

Basically, The tower is instructing you to continue on the runways heading until you've reached an altitude of 300 meters QFE (1000 feet above the ground) and then continue on your own navigation.

[effte]

@Warthog,

sorry, you can't have an elevation in ft above a Kohlsmann (altimeter subscale) setting of 1013 hPa. For subtraction to work, both terms have to be of the same unit. The hair has now officially been split. ;)

 

I see what you mean though, and you have the right idea.

 

QNE: "What indication will my altimeter give on landing at...(place) at...hours, my subscale being set to 1013.2 millibars (29.925 inches)?"

 

The code QNE is not, however, officially defined in international aviation, unlike QNH and QFE. The Q codes were established to simplify comms with morse code way back and that one hasn't made it into the standards of today.

 

If your altimeter can't cope with the current atmospheric pressure, you don't have an altimeter and are not legal to fly if it is require equipment. It has happened, and aircraft have been grounded... but only due to high pressure, while I've been around.

 

That's a story in itself. The fast jet boys were stuck on the ground but I went flying, as my altimeter had a wider range. In addition, it was one of the coldest days of the year at a high latitude, so the density altitude was way - way - below sea level. Alone and without filling the tanks to the brim I got impressive performance out of the old kite. :)

 

Cheers,

/Fred

[genbrien]

Only thing I hope is that we'll get US ATC with Imperial system with Nevada

[Looney]

If you want to fly with RL ATC, there are servers out there that have 'm.

 

132 virtualwing is one of them, I do ATC/AWACS there :)