WHAT I LEARNED SO YOU DON'T HAVE TO: DENSITY ALTITUDE AND MOUNTAIN WAVES
I live and work in Ohio, and like to play in the mountains, both flying and with feet on the ground. A lot of us live east of the Rockies, without the profound effects of density altitude, or that invisible mountain wave.
In my earnest desire to fly in the mountains I love, many years ago I registered for a backcountry flying course…in Truckee, CA. Miraculously, I made it to Reno before experiencing a mountain wave. With Truckee practically in sight and approaching the final mountain ridge, my ground speed went from 135 kts to 80 kts in an instant. I floated over the ridge, pitch expected for straight and level at 80. I will never approach a ridge crossing straight-on again. Rather, at 45º, to allow for only a 90º turn to escape safely.
Density altitude – the lack of power from high elevation coupled with above-standard temperature – gripped me when on final into Raton Municipal/Crews Field KRTN, 6,352 elevation, in a Grumman Tiger with student pilots aboard for a cross-country experience. Seduced by the gradual rising terrain westbound from Ohio, on final I realized I was sinking below the runway edge. It REALLY gifted me a profound understanding of density altitude!
Can we safely transition to higher altitude flying? Sure! It just takes creativity and planning. Be aware of FAA hazardous attitudes, do some research, talk to experienced pilots in the places you are going, do more research, then get in your plane and practice where you live. Scenario training is great when you really lean into it.
AOPA developed Focused Flight Reviews, which include a Backcountry option, mentioned on page 4, August 2026 Flight Training. One safety tool is Vc, or “canyon speed,” coined by Amy Hoover and “Dick” Williams in their manual Mountain, Canyon, and Backcountry Flying. Contact me for info on the backcountry flying course in Truckee. I have vetted these samples of the many resources myself. Just remember, online videos and reading can be productive, but it’s your hips in the seat with other experienced pilots that really works!
Submitted October 15, 2026
By Christine Mortine, CFII, DPE, RAF Safety, Education, & Etiquette (SEE) Team Education Chair
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