Limitations of the See-and-Avoid
Principle
The following recommendations were issued as part of the BASI
Research Report - "Limitations of the See-and-Avoid Principle",
1991. At the time of the issue of that report the six
recommendations were not assigned formal recommendation numbers. To
facilitate publication of the recommendations and the responses to
them, they have been entered into the OASIS database. As a result,
the recommendation numbers assigned to them do not reflect the
actual recommendation issue date, rather the date that they were
entered.
Safety Recommendation
Pilots should recognise that they cannot rely entirely on vision
to avoid collisions. Consequently, they should attempt to obtain
all available traffic information, whether from Air Traffic
Services or a listening watch, to enable them to conduct a directed
traffic search.
CASA agrees with both the above recommendations. However CASA
believes that the limitations have been promoted to the extent that
benefits of the visual system may have become seriously discounted.
As a consequence, CASA will continue to emphasise the requirement
to be vigilant.
