Commercials pilots: stall warning, and they pull up!

[TomcatViP]

Who are you to tell others to shut up ?

Yes it's a difficult job environment but does it means that we have to excuse any potential fails ? No !

By the way didn't they have a valid instrumented alt indication ?

Regarding icing conditions at low alt that's it's a totally different situation : it's an external factor !

[bongodriver]

Yes it's a difficult job environment but does it means that we have to excuse any potential fails ? No !

until a full and clear examination of the case is concluded nobody know who or what failed......no excuses being made as far as I can see.

By the way didn't they have a valid instrumented alt indication ?

Debateable......with a failed pitot/static system then there is no valid alt or airspeed data.

Regarding icing conditions at low alt that's it's a totally different situation : it's an external factor !

just like many other potentially fatal situations.....windshear/microburst, the recovery from encountering windshear actually requires the aircrew to pull up to the stick shaker (but must not go beyond into the stall) and use full power and maintain untill a positive indication of climb is achieved and all indications of widshear are clear, icing conditions can't be ruled out given their situation, ice is commonly encountered in storms and we use the anti ice system in conditions of visible water vapour in temparatures between +10 to -40, not sure how it makes sense to rule out icing...it is still a condition that requires the correct actions to recover from.

I might add that in the case of encountering windshear, irrespective of how correctly the crew have reacted they are at the mercy of the conditions, the crews actions can only gurantee the best chance of making it through but the outcome is down to the strength and duration of the event and perhaps the altitude the event is encountered given that it is mainly only a problem if encounterted during approach or departure.

[TomcatViP]

"Potential" means what it means : this is not what has happened for sure.

A pitot is not a static pressure probe for a barometric alt indication or I might have loose some years of engineering in the move

Also no stick shaker on the 'Bus as it was already pointed out (side stick)

[SpeculationMode : ON]

Have a look there I found that interesting : http://www.iasa-intl.com/folders/bel...lerances-2.htm

[SpeculationMode : OFF ?]

[bongodriver]

"Potential" means what it means : this is not what has happened for sure.

Understood and merely suggested no excuses are being made at this time....

A pitot is not a static pressure probe for a barometric alt indication or I might have loose some years of engineering in the move

Obviously I can't comment on the Airbus system but the pitot probes on the Learjet 45 are combined pitot/static probes, as far as I know this is a common arrangement on most civil trasports these days, subject to the nature of a failure then it is possible to loose both sources of data.

Also no stick shaker on the 'Bus as it was already pointed out (side stick)

Yes I know, wasn't using this example in relation to the event in question, just a small insight into techniques used to recover from adverse situations, it only applies to aircraft with a yoke.......i.e. boeing and everything else appart from Airbus.

[TomcatViP]

No prob Bongo,


here is what I dig out from this website :

http://aviationtroubleshooting.blogs...le-barthe.html