Flight Ten: Best Glide & Power-off Landings

Todays emphasis was on best glide speed and performing power-off landings. This is a continuation of emergency procedures we began during Flight Eight. As Theresa is describing this in context...which is an engine failure...she starts relating things to how many more seconds in the air certain decisions give you...and in the back of my head I'm thinking "Oh man...shit just got real."

Best Glide Ratio

The Cessna 150 has a glide ratio of 1:7 - for every 1,000 feet of altitude lost you can glide for 7,000 feet or about a mile and a third. So if the engine dies at 1,000 feet you will be landing within that distance and you only have a few seconds to make the good decisions needed for that desired safe landing. Best glide for the C-150 is 70 MPH, which gives you the maximum lift for the least amount of drag. What's cool about this is you can trim the aircraft so that it descends at best glide with no hands on the yoke, giving you less to do while making your other time critical choices.

We headed out to the practice area and I performed a few landing configuration into a stall runs, first with power and flaps and then without either one. We jammed back to Pearson at 125 MPH and had time for three power-off landings.

Theresa did the first one to show me what to expect, however she came in a little too low and we aborted and went around. Then it was my turn and when I came around I was too high and I had to recover...that's when the unexpected (to me) happened. We were in a no power, best glide configuration meaning the trim was pitched way up but our nose is down. As soon as I added full power - the trim setting caused the planes nose to pitch up wildly. I had to push forward on the yoke really hard...it was a little scary...all I could think of for a second was this video. Theresa later told me, that's just how it is...and why in a real emergency, you shut-off the failed engine to ensure it doesn't suddenly restart while you are configured for best glide and just a few hundred feet in the air. Anyway, you just gotta muscle it out.

The final time around, killed the power, configured for best glide and turned towards the runway. Everything went really smoothly and I came in for a great landing, even if it was a little long and we had to taxi all the way to the end of the runway before we could exit.

Continuing with the Top Gun theme: "I feel the need...the need for best glide speed!"

Hours of flight logged this lesson: 1.1 Dual Received (DR)
Cost of this lesson: $143.11