Cold temperature correction

turbine works fine · Post by **turbine works fine** » Mon Feb 23, 2004 10:12 am

HI all!!

I just have a question concerning cold temperature correction. Is there a faster way to calculate the correction altitude or is the manner shown in the CAP the only way

Thanks for any help!!

Right Seat Captain · Post by **Right Seat Captain** » Mon Feb 23, 2004 3:11 pm

You can do it with a standard flight computer...but I'd rather go with the CAP myself.

cyyz · Post by **cyyz** » Tue Mar 16, 2004 1:25 pm

Are Cold Temp Corrections "mandatory"?

I had a TC employee do my ride and he said it's upto the pilot if he wants to add them or not.

Another said it's a "must".

But the Cap Gen doesn't say. "Must"?? Thoughts?

Thanks in advance.

SourApple · Post by **SourApple** » Tue Mar 16, 2004 1:48 pm

According to the AIP's "plain English" it's a definate maybe....

RAC 9-14 (Fig9.1): In conditions of extreme cold weather, pilots should add the values derived from the Altitude Correction Chart ..... (same as in the CAP)

RAC 9-15 (9.17.1): The calculated MSAs must be adjusted when ambient temperature on the surface is much lower .....

Depends on if you want to hit stuff or not...

cyyz · Post by **cyyz** » Wed Mar 17, 2004 8:12 am

"pilots should add "

Exactly. Perfect.. Thanks for the Rac link too..

"Depends on if you want to hit stuff or not..."

Oh, I agree. PIC takes full responsibilty, add correction or don't PIC takes blame.

Like our last NewsLetter(might have been a magazine article) where the pilots stopped talking, so the box wouldn't record them go below mda, they ended up dead.

Just having a "discussion" about it with the staff....

Thanks again for the RAC #..

SourApple · Post by **SourApple** » Wed Mar 17, 2004 4:54 pm

You're welcome.

bcflyer · Post by **bcflyer** » Wed Mar 17, 2004 5:11 pm

When I flew in NW Ont we very rarely applied any cold weather correction. When I started flying out west in the rocks we applied them ALL the time. A difference of 400-500 feet can really but a damper on your day flying in the mountains!!

Panama Jack · Post by **Panama Jack** » Wed Mar 17, 2004 9:47 pm

Here is one idea on how to do this.

If there is a destination that you fly into often, or all your airports are at the same elevation-- in some spare time you can make up a little table with different temperatures to use often regularly. Air Canada plates have this for a few airports (Wabush, Labrador comes to mind).

For me, the most important altitude (where I want to be most precise) is the MDA or DH. The lower you get, the less the difference is. I don't care that instead of 900 feet on the second step down, it is 960 feet. Heck, I'll happily go at 1000 or even 1100.

I've met some pilots who are hesitant to do the temperature corrections because they "don't want to fly higher" and want to be able to "get in." Obviously, a fundamental misunderstanding of the concepts here.