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

[The Nr Fairy]

From The Register - https://www.theregister.com/2020/05/29/bombardier_missed_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>

[Mad (Flt) Scientist]

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.

[atakacs]

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...

[milan.pilot]

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

[atakacs]

Mid age citations such as CJ2+, CJ3, RA390,... well known issue since at least 3 years

wow... and only surfacing now ?

[DaveReidUK]

Mid age citations such as CJ2+, CJ3, RA390,... well known issue since at least 3 years

Also G150, Falcon 50, Falcon 2000, etc.

[safetypee]

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?

[jmmoric]

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.