Very neat to see, thanks! I work at Embry Riddle Aeronautical University and have shared the vid with some of the flight students. We visit in the summers and always stop on our way from Ketchum to Stanley, it's amazing to see the technical side of the airport. The idea of a grass strip is pretty exciting to us!
Good coverage especially with mention of staying in low ground effect on takeoff until as fast as runway length will allow and down drainage egress. Mountain flying in low powered aircraft is mostly maneuvering flight. Learn maneuvering flight energy management techniques first. A normal engine on a small airplane is going to be a smaller percentage of total energy available on every takeoff. Ground effect, down drainage potential energy of altitude, and orographic lift are significant percentages of total energy available for getting out safely.
Density Altitude is an important concept, but one many pilots struggle to learn. I think it would have been easier for everyone if they called it "High Altitude Density", I think that is more intuitive. As stated, a high density altitude means thin air. Thinner air reduces engine performance, wing lift and propellor efficiency. High, Hot and Humid=Harder to fly. www.faasafety.gov/files/events/NM/NM07/2023/NM07120280/FAA-P-8740-02-DensityAltitude.pdf
The term is hyphenated as high density-altitude. On a hot day, the density is lower and it is as if you are flying out of a high altitude airfield---the "effective altitude is higher." The air is thinner due and lift is lowered.
It's whatever your airplane "thinks" it is. Ignore what your airplane "thinks", and you will bend metal and hurt yourself and anyone/anything in your rig.
The narrator must not be from Idaho. He pronounces it Boyzzzee. It's Boi-see. Please understand how to pronounce local places, how the local people say it.
