Someone mentioned that Cirrus has an operational limitation based on the temperature of the ramp. I was told that over 120F and you can't depart? Something due to epoxy used to glue the airframe together. Old Wives tale? Or is it in the Operating limitations of the POH?

Fly a SR22 between for several years. Never heard of such nonsense.

This is the only temp limitation I could find in the POH...

Environmental Conditions
Do not operate the airplane below an outside air temperature of -40°F
(-40°C).

OWT

In a pinch, you get one of the line-boys to bring you a bucket of propwash, dump it onto the airframe, and it will cool it down enough so that you can take off.

Maybe they were thinking of on of the Diamond models. The Katana has an operating temp limit; not sure about the others.

In a pinch, you get one of the line-boys to bring you a bucket of propwash, dump it onto the airframe, and it will cool it down enough so that you can take off.

The process used to build early composite airplanes, say like a Long EZ, had temperature limitations. The process used to build the airplane made the resin begin to soften at temperatures above 110 or so. Today they are cured differently using an oven. The parts produced today will actually get harder as the temperature rises. The PC12NG has composite cowling doors (carbon). I'm fairly confident it gets over 100 degrees shortly after shut down with no issue.

This may have come from the follow limitation in the SR22 POH:

"To ensure that the temperature of the composite structure does not exceed 150° F (66° C), the outer surface of the airplane must be painted in accordance with the paint colors and schemes as specified in the Airplane Maintenance Manual. Refer to Airplane Maintenance Manual (AMM), Chapter 51, for specific paint requirements." This pretty much requires white paint, as I recall from Cirrus training.

Maybe it was for another plastic airplane ?? (Nothing against them - but there are limits on some.)

Some of the Diamond aircraft have such limitation. Behind the seat cushion of a DA20 is a heat indicator that will turn colors if above the allowed takeoff heat. Given I've flown DA20's in the dawg days of summer here in Arkansas and never seen that heat indicator change, I can only say the last thing I would want to do is fly any aircraft when above that temp. (I think it is 120* F - but can't remember for sure.) It would be time for the SCUBA gear ...

I believe my Cirrus only had performance data published to 41ºC. I remember fling it at 43ºC without issue.

This may have come from the follow limitation in the SR22 POH:

"To ensure that the temperature of the composite structure does not exceed 150° F (66° C), the outer surface of the airplane must be painted in accordance with the paint colors and schemes as specified in the Airplane Maintenance Manual. Refer to Airplane Maintenance Manual (AMM), Chapter 51, for specific paint requirements." This pretty much requires white paint, as I recall from Cirrus training.

Eric,

You are correct he Katana and DA20 had temperature limit for takeoff. There was a sensor under the seat or someplace.

Kevin

The responses are correct, this limitation is for Diamonds. It is also why all Diamonds are white, to keep the temperature down.

Didn't Velocity Aircraft have something similar to this in that you could not paint certain parts of the plane any color other than white?