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Old 12th Mar 2024, 13:09
  #53 (permalink)  
Reely340
 
Join Date: Feb 2012
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Originally Posted by krismiler
https://www.aviationtoday.com/2015/0...-software-fix/


Avionics Today 05-05-2015] Boeing will provide a software update later this year to address an issue that causes the 787 Dreamliner’s Generator Control Units (GCUs) to simultaneously go into failsafe mode after being powered continuously for 248 days. The FAA has issued an Airworthiness Directive (AD) calling for 787 operators to address the glitch, which is caused by a software counter internal to the GCUs that will overflow after 248 days of continuous power, the AD states.
Outrageous! What monkeys are coding these things ?

HP and Dell managed to sell a lot of Enterprise class SSDs (solid state disks) made by SanDisk, where the firmware programmers managed to implement an operating hours counter that causes the thing to irrevocably brick, as soon as it reaches 32768 (2 to the power of 15) hours.
https://www.thestack.technology/ssd-...hours-sandisk/
In an instant all your terabytes of data on the SSDs - while still "stored" - cannot accessed anymore.
And the unit cannot be patched, as it doesn't talk to the outside world anymore.

Now, if you installed a couple of them in a server, for redundancy for instance, the tiny variations of the internal clocks
will have them die within for example 10 hours of each other, just like the EC135 accident at night over Edinburgh when
the second engine (twin engine redundancy, we've heard it) went silent some 32 seconds after the first one,
while the POH claims the differently sizes tanks should(!) cause a 4 minute delay between fuel starvations.

Last edited by Reely340; 12th Mar 2024 at 13:24.
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