Airbus A350 Software Bug Forces Airlines To Turn Planes Off and On Every 149 Hours

'Some models of Airbus A350 airliners still need to be hard rebooted
after exactly 149 hours, despite warnings from the EU Aviation Safety
Agency (EASA) first issued two years ago. In a mandatory airworthiness
directive (AD) reissued earlier this week, EASA urged operators to
turn their A350s off and on again to prevent "partial or total loss of
some avionics systems or functions." The revised AD, effective from
tomorrow (26 July), exempts only those new A350-941s which have had
modified software pre-loaded on the production line. For all other
A350-941s, operators need to completely power the airliner down before
it reaches 149 hours of continuous power-on time.

Concerningly, the original 2017 AD was brought about by "in-service
events where a loss of communication occurred between some avionics
systems and avionics network" (sic). The impact of the failures ranged
from "redundancy loss" to "complete loss on a specific function hosted
on common remote data concentrator and core processing input/output
modules." In layman's English, this means that prior to 2017, at least
some A350s flying passengers were suffering unexplained failures of
potentially flight-critical digital systems.'

-- source: https://it.slashdot.org/story/19/07/25/1932229

Oh dear...

Cheers, Peter
-- 
Peter Reutemann
Dept. of Computer Science
University of Waikato, NZ
+64 (7) 858-5174
http://www.cms.waikato.ac.nz/~fracpete/
http://www.data-mining.co.nz/
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