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Refer to Table 1. Going from the lower
left to the upper right we transition from a situation in which we have
reasonably good accident prevention to one in which we do not. In the
lower left part of the table we prevent an incident with a pre-emptive
level of control. For the conditions in the upper right portion of the
table we focus on protection where we cannot always prevent an accident.
Five levels of safety defense:
1. Prevent inappropriate attitudes for
safe work or play.
a. Hurried
b. Stressed
c. Tired
d. Distracted
e.
Afflicted by Commodore Syndrome (unjustified overconfidence)
2. Use prechecks.
a. Inspect equipment for satisfactory condition
b. Check
equipment for proper operation
3. Employ backups or redundancy.
a. Cyanoacrylate debonder
b. Model holder while starting aircraft
c.
Spotter for flying (co-pilot, if you will)
d. Redundant controls (dual
elevators with independent servos)
4. Isolate the people from the
hazard.
a. Area control by function
b. Distance separation
5. Use
barriers (Protective equipment); e.g.:
a. Goggles
b. Dust masks
c.
Fences
MA
Donald Brooks
brooksdw@ida.net
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