Summer is fast approaching. In the heat of battle, er I mean day, we may launch heavier and higher than planned. This happened to one of my students at Gallup, NM in our club Colt. He had topped both tanks (right tank is considered a reserve even down low) in the cool desert morning and carefully planned his first cross country with passenger as a new private pilot.

The temperature had risen considerably by the time he leaned to max rpm and made a low ground effect takeoff west down drainage as taught. Over the very nice open desert just off the end of the runway he pulled back a bit and lost ten of the twenty feet of altitude he had gained. He pushed forward on the control wheel, again as taught. At this point he decided the engine had failed and made a very smooth forced? landing, ran into a ditch, and bent the prop (forward pretzel) and flange.

Insurance got us a C-172 with O-300. I told him he made a nice forced landing. I never had the heart to tell him the engine hadn't quit. He never had any problems with the 172 because he had learned more about DA pretty cheaply.

Another place I have had students learn about DA was cruising near ceiling in the heat of day. I would ask them to climb a bit and then point out the descent on the VSI and altimeter.