flyund

Is there a way you can tell how much runway is available for a particular intersection takeoff other than asking ATC?

What is your policy regarding intersection takeoffs, single vs twin?

Senior Skipper

It's my understanding that they should tell you the distance available for intersection departures and LAHSO clearances when they give the clearance. Short of that, you'd have to measure it from the AD...

I imagine if it's a commonly used isec, the distance may be in the NOTAMs or thereabouts.

Photon

look at those white on black signs along the runway

Senior Skipper

...or that...

USMCFLYR

Well there is that old saying about altitude above you and gas you dump overboard and runway behind you - - but we use them occassionally for a variety of reasons. Just be sure to have thought about all the factors that might have changed from your brief (like abort speeds e.g)

USMCFLYR

ryan1234

Don't be afraid to ask ATC, it shouldn't be a problem especially if they haven't told you. Sometimes I just eyeball the distance (probably not the safest method), for example if a runway is 10500ft and I look at the diagram and say N2 is roughly 1/3 down 7L, I figure I have 2/3 of 10500 (which is around 6800-6900ft) Just use common sense and be familiar with your aircraft (i.e. sometimes full-rich on takeoff does NOT make max power). If you are flying a twin you'll need to keep in mind a few more factors. If departing short-field with a twin, do a longer run-up, get your gear up as early as possible. Remember that a POH is approximate, it may not hold true verbatim for your particular airplane (distances are not guaranteed), there are many, many factors that affect take off performance (humidity, CG, etc).
Most of all if you are uncomfortable or feel it may be close just ask to back taxi or switch intersections.

SomedayRJ

They should tell you if you ask.

There's nothing more useless than the runway behind you.

Purplehaze21

Look at your Jepps plate....if you have one...it will tell you distance remaining.