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Bombardier software bug caused incorrect turns on missed approaches...

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Bombardier software bug caused incorrect turns on missed approaches...

Old 1st Jun 2020, 10:57
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Bombardier software bug caused incorrect turns on missed approaches...

From The Register - https://www.theregister.com/2020/05/..._approach_bug/

I can't find a Canadian TSB report into the incident.

There is an EASA AD - https://ad.easa.europa.eu/ad/US-2020-10-05

Scary!

<I have had a quick scan for existing threads but nothing found. Feel free to move into one should it already exist>
The Nr Fairy is offline  
Old 1st Jun 2020, 13:46
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As of today it's a "Mitsubishi" bug

Though it's actually a (Rockwell) Collins FMS issue - and following the links, the FAA actually appears to have issued their AD against the FMS, not against the aircraft, which is certainly an interesting approach.
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Old 1st Jun 2020, 21:50
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Is that FMS used in any other aircraft ?

In any case I would agree with Bombardier that a software fix would be wiser than limiting the use of the FMS...

Last edited by atakacs; 2nd Jun 2020 at 00:50.
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Old 1st Jun 2020, 23:51
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Originally Posted by atakacs
Is that FMS used in any other aircraft ?

In any case I would adree with Bombardier that a software fix would be wiser than limiting the use of the FMS...
Mid age citations such as CJ2+, CJ3, RA390,... well known issue since at least 3 years
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Old 2nd Jun 2020, 10:25
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Originally Posted by milan.pilot
Mid age citations such as CJ2+, CJ3, RA390,... well known issue since at least 3 years
wow... and only surfacing now ?
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Old 2nd Jun 2020, 13:07
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Originally Posted by milan.pilot
Mid age citations such as CJ2+, CJ3, RA390,... well known issue since at least 3 years
Also G150, Falcon 50, Falcon 2000, etc.
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Old 2nd Jun 2020, 16:01
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Mild thread drift; has the software bug in the EFIS re declutter mode inhibiting the vital ATT mis-compare alert been rectified (CRJ accident in Sweden).

Is the problem within EFIS, thus a vendor problem. If so what other EFIS / aircraft could be affected?
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Old 3rd Jun 2020, 11:52
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Flying through the localiser without capturing it..... if flying too fast.

Though I understand there are ways to handle that one, if you know it has that tendency.
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