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Forum: Tech Log

5th Jun 2011, 11:27

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

Looks to me as if an Airbus pilot needs more...

Looks to me as if an Airbus pilot needs more skills and training than average.

Forum: Tech Log

4th Jun 2011, 22:36

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

jd ee I'm talking about when they were on...

jd ee

I'm talking about when they were on the way down - not the warning at the start of the stall.
The report tells of nose down inputs and (consequent?) stall warnings sounding. Possibly the...

Forum: Tech Log

4th Jun 2011, 19:29

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

Mr Optimistic Pointing the nose down when...

Mr Optimistic

Pointing the nose down when you are falling at 123mph requires a certain amount of confidence and the certainty that that is the right thing to do.
More likely you'd stick to...

Forum: Tech Log

4th Jun 2011, 14:34

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

antpp My error. Thanks for that.

antpp

My error. Thanks for that.

Forum: Tech Log

4th Jun 2011, 13:52

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

Mr Optimistic You are quite right, of...

Mr Optimistic

You are quite right, of course.
In the info released so far there is no mention of what the PF did after that stall warning caused by his nose down inputs. It's just surmise that...

Forum: Tech Log

4th Jun 2011, 13:20

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

auraflyer How true. Methinks there should...

auraflyer

How true. Methinks there should have been a warning that the system had gIven up and the last time it felt confident enough to speak (only a second before!) they were in or approaching...

Forum: Tech Log

4th Jun 2011, 13:10

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

Mr Optimistic Hardly possible? (speaking...

Mr Optimistic
Hardly possible? (speaking entirely as a theoretician only).

You want to point the nose into the wind, more or less so the wing can start working "proper" again. If the wind isn't...

Forum: Tech Log

2nd Jun 2011, 23:18

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

Lonewolf_50 I'm just looking for the...

Lonewolf_50

I'm just looking for the cause of the two stall warnings right at the start, using the hypothesis that a stall warning is triggered not only by AoA but also when the (indicated) air...

Forum: Tech Log

2nd Jun 2011, 22:10

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

CogSim Stall is due to too an AoA which is...

CogSim
Stall is due to too an AoA which is outside the boundaries, but stall warnings are in addition due to your AoA being in danger of going outside the boundaries.
If your horizontal velocity is...

Forum: Tech Log

2nd Jun 2011, 20:47

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

Yeah, I got that; but the flight path is...

Yeah, I got that; but the flight path is horizontal at the top of the path.
You could only get pitch = AoA in horizontal flight if there is an upward wind.
Maybe there was and that's what helped...

Forum: Tech Log

2nd Jun 2011, 19:57

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

jcgeant "Sorry if I'm dumb .. but .. someone...

jcgeant
"Sorry if I'm dumb .. but .. someone can make a technical comment (explanation)
about the text in bold .. ?

From the 27 May BEA report:
Quote: ...

Forum: Tech Log

2nd Jun 2011, 19:38

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

BOAC I got that "stall warning triggered by low...

BOAC
I got that "stall warning triggered by low air-speed indication from -
Initial Air France Flight 447 Black Box Info Raises More Questions Than Answers: Pilot | NYCAviation...

Forum: Tech Log

2nd Jun 2011, 17:57

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

bearfoil "Not "raising the nose" in recovery...

bearfoil
"Not "raising the nose" in recovery from approach to Stall, but "Maintaining Altitude", two very different things."

Point taken.

I read somewhere that the initial two stall warnings...

Forum: Tech Log

2nd Jun 2011, 17:14

Replies: 2,070

AF447 Thread No. 3

Views: 615,763

Posted By t54

"From 2 h 10 min 05 , the autopilot then...

"From 2 h 10 min 05 , the autopilot then auto-thrust disengaged and the PF said "I have the controls". The airplane began to roll to the right and the PF made a left nose-up input. The stall...

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