[OPE] questions re transition

Well Jerry I guess your Navstar GPS suggestion is useful not just insofar as
you can track more exactly where the plane went down, but also, because a
plane could in principle crash into e.g. a ship, a building or into another
airplane (however, an on-board radar system is standard equipment nowadays).
In that case, we would be considering the safety of those in the immediate
vicinity of the crash site.

Point is, when you have 230 tonnes of metal and cargo moving at speeds of
circa 500 to 800 kms/h, any impact with another object turns it into a bomb.
When El Al flight 1862 crashed in Amsterdam South-East on 4 october 1992
after two engines broke off the plane, it killed the 4 people aboard and 39
people on the ground, with many more injured and poisoned. The death toll
was comparatively low that time, only because a lot of people were out and
the plane did not carry a full load of passengers.

In Europe, the Galileo Positioning System, to which countries like China,
Israel, India, Morocco and South Korea are partners, is not yet fully
operational until 2013, but it is designed to be more exact than US Navstar
GPS, the Russian GLONASS or the Chinese COMPASS. Each of these systems has
both military, civilian and commercial uses. It is envisaged that Navstart
GPS version III and Galileo will operate together, as Bill Clinton removed
"selective availability" of the US positioning system towards the end of his
term in 2001.
http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/gps/policy/availability/index.cfm

I overestimated sea depth in my previous post, the sea there was not 7 kms
deep, but supposedly circa 4 kms. Submersibles such as Teleprobe can search
at 3,000-6,000 metres below the surface. If the flight recorder was
dislodged from the plane, it could even move about in the strong
undercurrents though, and be even harder to find by the submersible
searching device.

Air France is now planning to cut 3,000 jobs mainly through attrition, but
possibly that it is not really in the interest of safety. Most airline
unions report increased work stress due to increased work intensity. Work
intensity is not easily measurable but changes in the number of staff can be
related to work tasks.
http://lists.econ.utah.edu/pipermail/a-list/2005-November/058475.html

Jurriaan

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Received on Thu Jun 4 16:10:44 2009