5 ms·
I’d note that commercial airplanes generally operate with 6-7 9’s of availability. For anyone that’s ever built a system with 5 9’s, this is impressive. In fac
by fnordpiglet 2y ago
I’d note that commercial airplanes generally operate with 6-7 9’s of availability. For anyone that’s ever built a system with 5 9’s, this is impressive. In fact it’s impressive enough you probably don’t think twice about sleeping on a flight.
- woah 2y agoIf something goes wrong, does it matter whether you are asleep or awake?
- greenchair 2y agowoosh!
- vkou 2y agoOnly when a flight attendant is asking on the intercom: "We don't mean to alarm anyone, but is anyone on board a pilot?" and you happen to be one.
- incognito124 2y agoIt's entirely a different kind of flying All together
- hooverd 2y agoHopefully you didn't have the fish.
- blitzar 2y agoLooks like I picked the wrong week to quit amphetamines
- mass_and_energy 2y agoLooks like I picked the wrong week to stop sniffing glue!
- hggigg 2y agoI know a commercial pilot who used that as a joke once and got in trouble. The plane in question had several pilots on it but the rest of the passengers didn’t find it funny for obvious reasons.
- LeonB 2y ago“We don’t wish to cause any alarm, but is there any one on board who is familiar with regular expressions, cron expressions and parameter expansion rules in bash?”
- wildzzz 2y agoSeveral overweight men stand up and walk towards the cabin, immediately throwing off the weight distribution and the plane plummets.
- rsync 2y agoYou joke but… There was an emergency nose high recovery out of San Diego airport where at one point the pilot had every passenger crowd into the first class cabin… The flight was saved.
- Aloisius 2y agoSix 9s would be half a minute of downtime per year. I don't see how that is possible given the maintenance required for these planes. Even the simple A checks ground a plane for hours every couple hundred flights while D checks take months to complete every 6-10 years. Edit: minute not hour
- csallen 2y agoBy my math, six 9's is 30 seconds, not 30 minutes? (1 - 0.999999) * (60 * 24 * 365) EDIT: This chart agrees: https://en.wikipedia.org/wiki/High_availability#Percentage_calculation https://en.wikipedia.org/wiki/High_availability#Percentage_c...
- Aloisius 2y agoYou are correct. Forgot what my units were in bc.
- echoangle 2y agoThe six 9s are probably meant as catastrophic failure rate, not downtime.
- fnordpiglet 2y agoIt counts any event where the plane has an unplanned event including unscheduled maintenance, unplanned flight deviations, and of course catastrophic failures.
- benhurmarcel 2y ago> I don't see how that is possible given the maintenance required for these planes You normally only count unplanned downtime in those stats for aircraft.
- lostlogin 2y ago> I’d note that commercial airplanes generally operate with 6-7 9’s of availability. Maybe they used to, but Boeing has been doing rather worse and that’s the point here isn’t it?
- Havoc 2y agoThat is presumably historic data though? 6-7 nines is a lot of nines and we’ve had a couple of issues in quick succession now
- OJFord 2y ago> it’s impressive enough you probably don’t think twice about sleeping on a flight. I don't think twice about sleeping on a flight because I've already made my bed at that point - nothing I can do if something goes wrong. (Well, I've woken my wife when a doctor was called for before, but that's about the extent of my usefulness.)
- fnordpiglet 2y agoI’ll wager if you got into a situation you can’t escape where you had a 30% chance of a horrific death over the next six hours you wouldn’t snuggle into your sound suppressing headphones and doze off between snacks no matter how inevitable things are.
- vikingerik 2y agoWhere in the world did you get that 30% number? Even on Boeing's worst planes, the chances of any incident are still much more like 0.003% or something like that. "30%" is just fearmongering.
- lazide 2y agoMeh, had worse odds and slept fine. Notably, however, odds are not nearly that bad, even in Aeroflot flights out of Africa. Or for that matter, combat flights in war zones. Besides, a plane crash is far from the worst way to go. Dramatic, sure. But dementia? Cancer? That’s often a pretty miserable death. Plenty of things out there to get worried about if you want.