Max. Demonstrated Crosswind Compoent

[Lead Sled]

Re: Re: Re: Re: Re: Max. Demonstrated Crossw

The consistency of 15 -20 among so many light airplanes and the lack of airplanes with maximum demonstrated crosswind components of 13 or 8 or 3 suggests to me that there is some target in mind.

I would think that the reason that most speeds, weight, and all other performance numbers competitive is that most design parameters are the same or nearly so.

Additionally, most manufacturers will occassionally limit the max demonstrated X-wind speed so as not to give "those less than proficient" among us a false idea.

I've got a buddy in flight test. When the schedule calls of x-wind testing they do it. They take what they get - as long as it is reasonable.

Lead Sled

 

[CDVdriver]

max.DEMONSTRATED xwind

Like it says, a test pilot has safely landed the plane in a crosswind this strong or it's an interpolated number.
BIG thing to remember (like I tell my students) he's a test pilot you're not, now you figure out if we can do this or not.
The ones that think they can are always in for a good laugh..

 

[AcroTim]

Not a limitation

As a matter of fact some POH's or AFM's list the demonstrated crosswind component in the normal section, no in the limitations.

 

[midlifeflyer]

Re: Not a limitation

As a matter of fact some POH's or AFM's list the demonstrated crosswind component in the normal section, no in the limitations.

I think that just about all do that. The only cases I can recall where it was in limitations were

a. the airplane actually has a max crosswind limitation rather than a maximum demonstrated crosswind component

or

b. the airplane has a limitation that requires that a palard be posted advising of the max demonstrated crosswind component. In that case, the placing of the placard is the limitation, not what the placard says

 

[Crizz]

The limit would be your ability as a pilot.

 

[Vortilon]

While we all recognize it is not a published limitation, if you had an incident while exceeding this "manufacturer's advisory" you could certainly be held responsible for disregarding safe & accepted practices and disregarding information from the manufacturer. Of course as a PIC you are always responsible for everything and you always have to balance risk but sometimes its good to put yourself on the business end of an inquiry board and pretend you are explaining your logic to a FAA Inspecor & their lawyers. Maybe there you'll find your answer.

Be careful out there!

 

[standaman]

I agree with Vortilon. Any lawyer worth a salt would paint you as exceeding a manufacturers recomendation. The FAA could always come after you for careless and reckless operations from what I know is very very broad.

 

[Lead Sled]

I agree with Vortilon. Any lawyer worth a salt would paint you as exceeding a manufacturers recomendation. The FAA could always come after you for careless and reckless operations from what I know is very very broad.

I disagree. Remember, it is not a limitation or a recomendation. It is simply the amount of crosswind that was demonstrated on "crosswind landings day" when they were flying the certification flights. Like I said in my first post, it is basically a weather report - we now know how hard the wind was blowing on that particular day.

Just for grins, I pulled out my G-100, Astra SPX and Astra FlightSafety Manuals. Guess what? There is no mention of demonstrated crosswind in the AFM. My G-200 manuals are packed away, but I would venture a guess that there is no mention of it there either. In fact, I don't remember a number even being mentioned in the Lears, but is't been 8 years since I've flown one. I guess that this means that we can't land in a crosswind with out being in danger of incurring the wrath of the FAA.

Lead Sled

 

[bugchaser]

All I know is that if we didn't fly when the wind exceeded the max demonstrated x-wind, we would never get anything done. When it gets up to about 40kts we start to think about it.

 

[Jmmccutc]

the worst is a statement in my school's SOP's, stating that, "...no student shall take off or land when the X-wind exceede that demonstrated by the manufacturer..." seems like we never get anything done if there is so much as a light breeze...Crewdawg, am i right?