Dick, you put that brochure out in 1998.
A few years later, the FAA did a study of the 329 mid airs between 1983 - 2000 in their proven, safer system.
• All occurred in visual meteorological conditions. Only six occurred at night and
four occurred at dusk. Bright sun was on the only commonly sighted factor related
to weather.
• About 88 per cent of pilots involved in midair collisions do not see the other
aircraft in time to avoid a collision.
• Most midair collisions involve low closing speeds, as one aircraft usually strikes
the other from behind, above or from a quartering angle.
• Most midair collisions occur near airports, especially airports without a control
tower. Midair collisions at high altitudes are rare events.
• A common factor in midair collisions was pilots using inappropriate entries into
the circuit and failing to use radios at non-towered airports.
• The 329 midair collisions indicate that see-and-avoid has inherent limitations as a
tactic or strategy for avoiding midair collisions.
An ATSB study at the same time of the 37 in Australia between 1961 and 2003 showed 29 occurred in or near the circuit area, with 15 happening at an ATC controlled Secondary airport, most prior to GAAP procedures. Only 1 occurred in a MBZ (at night).