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To: Mark L. who wrote (16320)3/2/1999 9:32:00 PM
From: jjs_ynot  Read Replies (1) | Respond to of 122087
 
>>> I believe there's a GPS rollover problem that had not yet been fully handled as of a few months ago. The GPS rollover date is not 1/1/00, however. I think it's sometime in August (not sure about this). This is, of course, a satellite issue, not an avionics issue, but the result would be the same. <<<

This may actually be a ground station issue. I will inquire with folks I work with who designed the GPS satellites.



To: Mark L. who wrote (16320)3/2/1999 9:48:00 PM
From: timers  Respond to of 122087
 
I don't think the planes falling out of the sky is the issue. The reason I believe that they won't fly is because of the non-compliance of Airports and the FAA. Still I don't think all problems with the planes themselves are fixed, but that's beside the point...above. Anyway, what will be a good short in light of all the controversy?



To: Mark L. who wrote (16320)3/2/1999 11:10:00 PM
From: Jetter  Read Replies (1) | Respond to of 122087
 
Mark, very true... The radio congestion alone from all of the position reporting would be enough to cause most of the delays.

The biggest fear that I have is that the FAA would "fall back" on the distance/spacing regulations governing arrivals and departures in and out of most of the busier airports. Several years ago, under protest the FAA controllers began issuing the regulatory spacing requirements and it nearly shut down the air traffic system.

Regards.



To: Mark L. who wrote (16320)3/3/1999 12:29:00 AM
From: ACS_101  Respond to of 122087
 
From Yourdon's book "Year 2000 Time Bomb"

The GPS rollover occurs at midnight August 21, 1999 (early AM Aug 22).
The GPS broadcast by satellite reverts to week 0 on that date.

Most GPS receiving software vendors are onto this, but correcting the issue is the responsibility of the receiving user's software.

One irony here is that GPS software is used by many non-transportation systems, including many major US banks as a means of synchronizing their transaction systems with the GPS atomic clocks.