1. HUMAN FAILINGS

2. Human failings
We are all susceptible to
forgetfulness
unjustified assumptions
jumping to the wrong conclusion
complacency
wishful thinking, etc
33% of all accidents and incidents in 2017 apparently arose in this way

3. An example follows

5. Circumstances incomplete preparation for flight in the air
on the ground

6. Preparation for flight-1
insecure tailplane
inoperative elevator (??); fatality

7. Preparation for flight-2
16 flights with:
airbrakes open
unlocked canopy
loose batteries/ballast
tail dolly attached
rudder pedals insecure
P2 with untested new hearing aid
tug and glider canopies misted after take-off

8. In the air 3 tug upsets including:
1 from glider pilot looking at fallen instrument
1 on trial lesson with airbrakes open
7 failed final glides, one on a trial lesson
opened canopy intending vent
ridge soaring, gliders missed by 30-50m

9. On the Ground-1 not looking: prop hit cable
buggy driven across the landing area
landing glider almost hit a member
injured by glider wing
prop hit cable
dolly with one clip remaining broke in use

10. On the ground-2 car driven over wing (2) towed glider collisions (8)
towed glider, brakes open, destroyed by fire
(de)rigging, wing fell over (3)
tug prop hit towing bar
injury from engine start with fuselage in cradle
cable drawn into winch hit glider
used u/c lever for flap

11. Human failings forgetfulness unjustified assumptions
jumping to the wrong conclusion
complacency
wishful thinking, etc
No easy solutions. But member awareness can help. Please show these slides at your club.