[LEAPSECS] Leap Sec vs Y2K
phk at phk.freebsd.dk
Sun Dec 12 04:31:35 EST 2010
In message <730779E5-5E6B-4016-9BE3-BACD9BB4A4AD at noao.edu>, Rob Seaman writes:
>On Dec 11, 2010, at 6:36 PM, Warner Losh wrote:
>> ATC systems being unsynchronized means that planes crash; clearly a situation we want to avoid.
>Presumably they do have layers on layers of error handling built
But all of those layers are based on reducing traffic density if
need be to VFR/CAT-zero where you can only fly if you can visually
see that you do not get in trouble.
Most major airports would see their throughput reduced to less than
10%, provided they have parallel runways, if not, it will be less
> as well as contingent procedures - perhaps even traditional
>sextant navigation relying on access to a timescale that approximates
>Greenwich Mean Time :-)
No, the windows of modern cockpits are not big enough to allow
rutine use of a sextant. The windows have minimal upward view these
days, to give better radiation protection for the crew.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
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