What does it mean when pilots say...?

Question

For example when taking off or landing I sometimes hear something like " 2 for 5", or they say numbers like that. Is it something to do with the EPR? I have no idea.

Answer 1

Each airline has their own codes for those things

like when you hear the boop boop that is somthing to the flight attendents

Answer 2

It's most likely their shorthand response to an altitude assignment.  "Out of 2 for 5"  is more properly Leaving 2000 for 5000. (Feet MSL)  On arrival the reverse would be true "Out of 5 for 2."  Not good radio discipline but as long as everyone involved understands what is being said-that's actually what's most important.

Answer 3

normally, during take off or landing, that number represent the aircraft heading to (in compass, 360degree). In this case, the pilot will say together with the word "....runway 245,... (left/right turn during take off)..."

to show the altitude, the pilot won't say 245 alone but together with thousand

Answer 4

Do you mean you've heard something like "Out of 2 for 5"?  That means altitudes, in this case leaving 2000 for 5000.  It's a shorthand way to repeat back one's altitude clearance/direction to ATC.

Answer 5

They are probably saying 245, which refers to the runway designation. They also use a form of their plane registration, something like Echo Delta or Sierra Whisky, which identifies the plane instead of saying something like "United Airlines flight 102 out of New York for Chicago."

Answer 6

Yes... out of 2 for 5  is correct.. that is a "readback" of an altitude change... albeit a poor one.  Just answering in the affirmitive is not good enough...  If you were cruising at 8 thousand... and  the controller called and said  "Goober 685, climb and maintain one six thousand" the correct response would be  "Goober 685 leaving 8 thousand for one six thousand"   IF you just said "Roger" he would/should  call you back and confirm it...

As to "runway 245"  there are no runways with headings other than 10 degree increments, and they of course represent their magnetic reference.  Depending on their mag dev,  the runway would be rounded off to 25 in this case for 250 degrees magnetic.

Answer 7

many pilots use those brief terms when referring to a change from a specified cruising altitude to an instructed climbing or descending altitude for example : you're cruising at 2000' and air control instructs you to climb to 5000' some pilots will reply as "2 for 5" or "2.5 to 5.5" which is 2500' to 5500' .