As I posted in a separate thread about the SAFE symposium (see COPA participation in SAFE GA pilot training reform symposium), John King presented some counter-intuitive solutions to create a sea-change in the culture of aviation.
One applies to Cirrus pilots: Ban low-speed flying "phobia"
As COPA members have discussed for years, Cirrus instructors have
often taught Cirrus pilots to land too fast. The fear of tail strikes
seems to have put the fear of landing too slow in way too many pilots.
So, our community has this "phobia" that John talks about.
Furthermore, this is timely because of the discussion of the Cory Lidle
accident that involved a high-speed narrow-canyon turn.
Here are John King's slides (posted with permission):
low airspeed phobia
of all fatalities come from stalls/spins while maneuvering
therefore we should tell pilots to slow down when maneuvering
accidents come from flying too slow
they may be caused by flying too fast
imminent stall caused by flying too slow
easy to recognize
controls get mushy
air noise decreases
airplane buffets well in advance
stall caused by an
increase in load factor
much less warning
controls aren't mushy
air noise is still at the usual level
buffet gives little if any warning
instructors are afraid
students will stall
they have them fly too fast
Radius of turn versus airspeed
Bank Angle vs Airspeed
What surprised me was the consequences of flying too fast in the
traffic pattern. Sure, we have debated the landing speeds being too
high. But wow, the impact on load factor and stall speed in a
high-speed base-to-final turn may well be a crucial insight into several
Cirrus fatal accidents: Phoenix, AZ; Waxhaw, NC; New Windsor, NY;
Lindsay, OK; Statesville, NC; Edgewater, MD; Zurich, Switzerland;
Tuscaloosa, AL; and of course, Manhattan, NY, the Cory Lidle accident.
Could flying too fast while maneuvering be a common factor here?
Cirrus pilots, take note! Go up with an experienced Cirrus
instructor and explore the differences between stalls in turns at
different airspeeds. I'm going to chat with the CPPP instructors about
this and probably encourage them to add it to the CPPP recurrent
Ban low-speed flying "phobia"
What a simple, yet possibly very important piece of advice for Cirrus pilots.
9 May 2011 15:32