On 4/1/19 1:28 PM, Brian Inglis wrote:
If my script is correct, the rollover occurs at the indicated instant on the time scales below:
2019 Apr 06 Sat 23:59:42+0000
That hits a bit close to home, as I'm scheduled to take a US commercial flight that will take off about two hours after that. As it happens in my software engineering class today I talked about AeroData's nationwide outage this morning, and now you're prompting me to speculate whether that outage was related to the GPS rollover. Although AeroData hasn't said publicly what caused the problem, the Orlando Sentinel reports that it was related to GPS and it's not beyond the realm of possibility that a flight-planning application would use prospective GPS clocks that wrapped around. (Of course I'm just guessing and could easily be quite wrong.) See: Pedersen JM. Nationwide glitch impacts flights at Orlando airport; Southwest, JetBlue most affected, official says. Orlando Sentinel. 2019-04-01 08:05 -04. https://www.orlandosentinel.com/news/breaking-news/os-ne-oia-aero-data-glitc... The outage caused hundred of US flights to be delayed today. See: Gallagher S. Flight management system crash causes airline delays across US. Ars Technica. 2019-04-01 16:34 -00. https://arstechnica.com/information-technology/2019/04/flight-data-system-ou...