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Re: when good software goes bad ..

Roy Schestowitz <newsgroups@xxxxxxxxxxxxxxx> espoused:
> ____/ nessuno@xxxxxxxxxxxxxxxxxxx on Friday 25 January 2008 00:03 : \____
> 
>> On Jan 24, 12:03 pm, Doug Mentohl <doug_ment...@xxxxxxxxxxxxx> wrote:
>>> Jan 22 2008
>>>
>>> "BA Flight 38, a twin-engined Boeing 777-236ER arriving from Beijing
>>> with 136 passengers and 16 crewmembers aboard, landed short of Runway
>>> 27 at Heathrow International on Jan. 17, suffering extensive damage as
>>> it skidded hundreds of meters on grass. Six passengers suffered minor
>>> injuries in the first serious accident involving the 777 since the
>>> plane first went into production in 1996"
>>>
>>> "The Boeing 777-236ER crash comes ten days after a Qantas Boeing
>>> 747-400 lost main power on its descent into Bangkok, Thailand on Jan.
>>> 7 and was forced to land on battery backup. There were no injuries and
>>> no damage to the jumbo jet"
>>>
>>> http://www.tradingmarkets.com/.site/news/Stock%20News/1014279/
>>>
>>> April 23 2007
>>> "An emergency Airworthiness Directive (AD) issued September 30 stems
>>> from two occurrences of engine thrust rollback during takeoff on
>>> Boeing 777-300ERs"
>>>
>>> "Trouble-shooting technicians have found that the two cases in which
>>> there were single-engine thrust reductions during takeoff were the
>>> result of a flawed software algorithm in the Full Authority Digital
>>> Engine Control (FADEC)"
>>>
>>> http://findarticles.com/p/articles/mi_m0UBT/is_39_20/ai_n16766814
>>>
>>> "Diamond Aircraft Industries and Thielert Aircraft Engines are at
>>> loggerheads over the cause of a double engine failure involving a DA42
>>> Twinstar during take-off in Germany last month"
>>>
>>> http://www.flightglobal.com/articles/2007/04/23/213371/accident-ignit...
>>>
>>> "On August 1, 2005, a Boeing 777-200, which had departed from Perth,
>>> received an EICAS (Engine Indication and Crew Alerting System) warning
>>> of low airspeed"
>>>
>>> "The PFD speed tape also displayed contradictory information: that the
>>> plane was approaching both the high speed limit and the low speed
>>> (stall) limit"
>>>
>>> 'The aircraft, still connected to the autopilot, pitched up and
>>> climbed .. The stall warning devices also activated'
>>>
>>> 'The PIC (pilot in command) "disconnected the autopilot and lowered
>>> the nose of the aircraft. The autothrottle commanded an increase in
>>> thrust which the PIC countered by manually moving the thrust levers to
>>> the idle position'
>>>
>>> http://www.airlinesafety.com/faq/777DataFailure.htm
>> 
>> What do the pilots do when it BSODs?
> 
> I've had a quick look at the snippets. I doubt they use Windows. In fact, Linux
> and some proprietary antiquated applications usually power those planes. The
> critical parts are slower to adopt Linux.
> 

The runway at Heathrow is still closed, though.  I was speaking in
Vienna this week, and getting in and out of Heathrow is a little delayed
because they're short of a runway, although everything appears to be
still running.  It's even nicer than usual to land safely at the moment
though.  :-)

-- 
| Mark Kent   --   mark at ellandroad dot demon dot co dot uk          |
| Cola faq:  http://www.faqs.org/faqs/linux/advocacy/faq-and-primer/   |
| Cola trolls:  http://colatrolls.blogspot.com/                        |
| My (new) blog:  http://www.thereisnomagic.org                        |

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