Classic British Flight Sim

I've been hearing this for some time on the air and radio and still occasionally a controller at EGPH still slips in the odd millibar.How long before only Toulouse built aircraft are allowed in European airspace? Only a joke but it might give the megalomaniacs in Brussels ideas EricT

Listening further, I think the reason I only noticed it late yesterday afternoon is that is seems to be only one controller.

The others just give the numbers...QNH997 is pretty obvious what he's talking about.

Really is a clumsy phrase and I just can't see any purpose changing it could serve.

Almost as if someone somewhere changed it just because he could and needed to justify his fat check.


Hang on... changing something that works and making it seem like something else when it's not really but makes them feel clever because they've made it different I wonder if they were on the Windows 7 development team?.

It's just fluctuations. "Well, fluc u Australians too!" as the joke goes.

The old one's are the best Mike


It's 1007 today and no talk of Hectopascals..just numbers.

Thanks for the explanation Pete...I'd not noticed before that they only said it below 1000, now you mention it I had noticed they only sometimes said millibars but never twigged it was with a purpose.

Still, give me a chance, I've only been listening in 45 years or so

Funny thing that, when you realise you'd noticed something you never noticed that you'd noticed

Garry Russell wrote:Still, give me a chance, I've only been listening in 45 years or so

I wouldn't worry about it, Garry - I used to get paid vast sums of money to know these sort of things!

Garry Russell wrote:Funny thing that, when you realise you'd noticed something you never noticed that you'd noticed

Now what was it tht Donald Rumsfeldt once said? "There are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns – there are things we do not know we don't know."

I think your comment makes more sense.
Pete

Love it

Bar as someone pointed out is not SI, but something (we at least) call "SIP" (I think the P stands for "practical", but I could be wrong). When I say "we" I mean the power generation industry. Heat balances for power plants proudly display bar because for engineers, talking about an inlet pressure being so many hundred "bar" is a easier and trips off the tongue (and the paper) more easily than so and so many Megapascal. I cannot remember anywhere in my career ever refering to "hecto" anything, but there we are. Incidentally there is still one exception to what I have said above and that's any heat balance produced by/for the United States, were pressures in PSI and enthalpies in BTU (British Thermal Units) are still used. Thankfully the massflow is in lbs/unit time and not in Slugs.

Does anyone plan to harmonise with Russia at any point where altitudes aren't even in feet but in metres? Seems a trifle silly to argue the toss about the correct name for the unit of pressure when the entire system is a mix of SI and Imperial anyway (pressures in bar/Pascals, altitudes in feet and speeds in Knots?!).

Feet for height is good

Visibilty is given in metres so 800 metres at 1000 feet is more easily understood as the visibility at the height and less chance to get confused.


The Chinese use metres too AFAIK

Do the North Americans not use inches for baro pressure correction? If so they must be very confused when over here! Thats not to mention degrees F!
Keith

TobyV wrote: Does anyone plan to harmonise with Russia at any point where altitudes aren't even in feet but in metres?

No real need, Toby. The Russian Fereration airspace abandoned the use of metric flight levels in Novemenber last year and, at the same time, introduced RVSM between FL290 and FL410 based on 1000ft intervals. At and below the Transition Altitude, altitudes are still given in metres, I believe, but the change has now started so maybe those too will disappear.
Pete