Plane Crazy at Mojave and density altitude.

Once a month at Mojave "Spaceport" (KMHV) they have a day of static displays and events. Generaly the third Saturday, unless something comes upor the weather turns sour.
It is well worth attending, as there is always something interesting to see, people to meet and I have to say the resturant has improved greatly!
On the 30th there will be an airport day at Trona (L72) which I find interesting, as tghe last time I was at Trona, the place was dead as a dornail. Apperantly someone has put lif back into the place.

Summer is coming, and the issue of density altitude is once again a real thing. Some rules of thumb: deduct 5% of your horsepower for each 2000' either pressure or density altitude. For example, here at Tehachapi (KTSP) on a hot day, the density altitude can reach 7000'! This means that your non turbocharged engine is already down by 17 1/2 %, for a little Cessna 150, that means you have only 82 1/2 horsepower for take off, and that is if you lean it properly before you go.

Yes, at these conditions, it is a good idea to take the runway, go full power and then lean until you get either a RPM rise, or your EGT is close (maybe a tad higher) to where it normally is for a sea level take off with full rich.

And don't forget, the true airspeed will be higher, even though you are using the same indicated airspeeds. Airplanes are not to bright. All they know is true airspeed and density altitude. and you need to know them too, and you need to know how to deal with them, especially as t hings get hot.