Astra SP in snow?

[snocone]

For some reason, (according to FSI, the climate in Israel), there are no numbers published for T.O. and Ldg for the Astra SP in snow. We frequently go to places where snow is common and will soon be taking delivery of our Astra SP. Anyone have comments or advice on the performance the the a/c, or ways to derive such information?

Thanks.

 

[justApilot]

You looking for performance numbers or limitations? Call Gulfstream, it's their baby now.

 

[Gulfstream 200]

No one ever really has answers to that question.
But really, how can they publish those numbers? How much snow? what is the braking? temperature?
The best I think you will get is contaminated runway numbers. If that. You can use the 135 numbers for wet runways I guess...
Sometimes if you look close in the AFM you can find some info. Dassault publishes some "landing factors" for snow and Ice runways and they are absurd (if not scary) Dont quote me but I believe they say if 25% or more of the runway if packed snow or ice add approx 300% to your landing distance....OK....
Guess no operations at most of the corporate airports in the NY area during the winter.....
Im not sure how these come about. Never flew an Astra, but have flown a Westwind in plenty of snow and it would slide a little (fat tires and terrible steering) but has good TRs and really handled just fine.....but we were also conservative on where we took it...(as I reccomend to anyone!) IAI has some strange practices and I always wondered just how some of them got approved....
hopefully someone else has more better answers!

 

[throttlejockey]

Airplanes certified under FAR 23 and FAR 23 Commuter Category, are not required to have performance calculations for runway contamination.

Transport Category Aircraft are certified under FAR 25 - and thus are required to have performance numbers for contamination.

If you look up the Type Certificate Data Sheet for the 1125 you will find out if it is a FAR 23 or FAR 25 aircraft.

 

[throttlejockey]

I took a look at the TCDS, it is definately certified under FAR 25.

You may want to take a "harder" look at those books. I am sure you will find something for contamination.

 

[Diesel]

the ultra has numbers for for a bunch of different levels of snow. 5 more for slush, a couple more for rain.

The only problem is it is in the Advisory section.

So this means if you run off the runway and used the numbers cessna says it's advisory only.

If you run off the runway and don't use the numbers the FAA will get you for not using all the numbers available to you.

Just a thought.