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Search: Posts Made By: NigelOnDraft
Showing results 1 to 35 of 55
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Forum: Tech Log
18th Nov 2010, 14:56
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Given the crew self appointed themselves as test...

Given the crew self appointed themselves as test pilots, and set out to test the AoA systems, then one would have thought they would look at and understand the effective AoA displays on each of their...
Forum: Tech Log
26th Sep 2010, 06:54
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

See the AAIB comments on the EJ indidents: CAA...

See the AAIB comments on the EJ indidents: CAA Link (http://www.caa.co.uk/docs/1455/CheckFlightHandbookIssue2Point2-April2009.pdf)

As above. You also need to just what you are doing, why, and as...
Forum: Tech Log
24th Sep 2010, 08:22
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

BOAC... I am not disagreeing with all you say ;)...

BOAC... I am not disagreeing with all you say ;)

Pretty poorly placed! However, to get in this situation:
They would require a double, identical AoA failure (as happened here) that outvoted,...
Forum: Tech Log
24th Sep 2010, 06:08
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Well, to an extent... it correctly outvoted AoA 3...

Well, to an extent... it correctly outvoted AoA 3 and disregarded it, ironically the 1 correct value.

The philosophy of what and when to tell the crew is no doubt part of the design and...
Forum: Tech Log
22nd Sep 2010, 06:24
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

CONF To get a "normal ops" accident we need to...

CONF To get a "normal ops" accident we need to mutiply the probablilities of:
The maint error leading to double AoA water ingress / freezing.
Nobody noticing the speed tape discrepencies / PFR /...
Forum: Tech Log
21st Sep 2010, 22:07
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

I think this message gets to the heart of the...

I think this message gets to the heart of the discussion.

Are we really talking about the design of the aircraft to prevent this accident :eek: Surely not? The reasons behind this accident are...
Forum: Tech Log
20th Sep 2010, 17:00
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Agree on Bilbao, albeit IIRC the "problem" was...

Agree on Bilbao, albeit IIRC the "problem" was caused by a software change i.e. the original design did not have the same behaviour. Whatever, it behaved "as designed" just a bad design in that...
Forum: Tech Log
20th Sep 2010, 16:13
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

I have better things to do than read the manuals...

I have better things to do than read the manuals which you are making me do ;)

3 AoA sensors respectivly go to 3 ADIRUS, all 3 of these are inputs to the Flight Control Computers. We are not...
Forum: Tech Log
20th Sep 2010, 15:16
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

BOAC... I cannot answer all your points... ...

BOAC...

I cannot answer all your points... as ever, what is behind the Airbus is not told to us as pilots... after all, you cannot know each software line.

However, before you say "I told you...
Forum: Tech Log
20th Sep 2010, 13:10
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

I hope so... It's what we've been arguing about...

I hope so... It's what we've been arguing about over the last 3 days :eek:

As in post #1223 (http://www.bea.aero/en/enquetes/perpignan/perpignan.php)

NoD
Forum: Tech Log
20th Sep 2010, 12:03
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

We're getting into too much detail I think......

We're getting into too much detail I think... some who know very little about the Airbus (those who don't fly it), some who know a bit (those who do fly it).

First of all, AoA Failure ECAM...
Forum: Tech Log
19th Sep 2010, 21:37
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Some interesting and more relevant posts just...

Some interesting and more relevant posts just above ;)

atakacs Why? What would a line Airbus crew do with such a message? What would they do differently, in say conducting an Approach Brief and...
Forum: Tech Log
19th Sep 2010, 15:37
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

We could debate the semantics, but yes, they are...

We could debate the semantics, but yes, they are at the core of some of the protections (Alpha Prot, Max AoA). I am not sure that AoA has much to do with Max AoB / Max/Min Pitch / Max/Min 'g' but I...
Forum: Tech Log
19th Sep 2010, 07:39
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

???? Not seen that anywhere? It has some...

???? Not seen that anywhere? It has some "protections", but it is not flown in an everyday manner so as to get anywhere near them.

Please re-read my post. This takes a number of "improbable...
Forum: Tech Log
18th Sep 2010, 18:13
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

BOAC... I am not sure they are "primary...

BOAC...

I am not sure they are "primary sensors"? The fact is the aircraft flew nigh on normally with 2 of them failed / stuck. The report at some point discussed them as "stall warning devices"...
Forum: Tech Log
17th Sep 2010, 08:32
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Well, if you think that making the AoA sensors...

Well, if you think that making the AoA sensors pressure wash proof - yes. But why? There seem far more fundamental issues to address to prevent a "repetition" which is the aim...

I suppose it...
Forum: Tech Log
17th Sep 2010, 07:47
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

WP... I think report does discuss this in...

WP...

I think report does discuss this in some detail (p37-47, 87-90)... They only know water did penetrate 2 of the 3 sensors. It penetrated because it was pressure washed in contravention of...
Forum: Tech Log
17th Sep 2010, 06:11
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

WP If you really want to know, rather just make...

WP If you really want to know, rather just make uninformed anti-Airbus comments, read the report. That is, after all, the subject under discussion :ok:

NoD
Forum: Tech Log
16th Sep 2010, 21:40
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

twinotter... An "organisational failure" -...

twinotter...

An "organisational failure" - the test they performed was for Test Pilots/purposes only. Hardly the aircraft's fault they embarked with this basic misunderstanding.

Pretty...
Forum: Tech Log
16th Sep 2010, 21:07
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

CJ... As an A320 Capt, I should probably...

CJ...

As an A320 Capt, I should probably know what the sensors are... but not too sure ;) They are proper vanes, 3 in all, and vulnerable to jetty's. All 3 in the nose area.

The report has...
Forum: Tech Log
16th Sep 2010, 20:06
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

CJ... I don't want to get into a technical...

CJ...

I don't want to get into a technical debate over matters I am no expert in. The report goes into very fine detail, and is clear:

There is a procedures to "wash" the Aircraft - it was...
Forum: Tech Log
16th Sep 2010, 17:58
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Extensively discussed in the report. Summary...

Extensively discussed in the report. Summary says it all:NoD
Forum: Tech Log
16th Sep 2010, 15:51
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

I might understand the "anti Airbus" sentiments...

I might understand the "anti Airbus" sentiments if this accident involved fare paying passengers, or crew members acting in accordance with their training.

I mean no criticism of the crew - they...
Forum: Tech Log
6th Mar 2009, 07:03
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

paweas I think you have missed the...

paweas



I think you have missed the whole detail of this accident :ugh: The point was as it all went wrong, it was under "Pilot's Law"... but you cannot legislate for crews electing to fly the...
Forum: Tech Log
5th Mar 2009, 09:28
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

I am intrigued by your <<an IAS is the "safe"...

I am intrigued by your <<an IAS is the "safe" range >>. For a fairly dull "line crew", seeing IAS reducing through 100K, but no sign of the Alpha Prot/Max/VLS symbols, that might have a degree of...
Forum: Tech Log
5th Mar 2009, 09:17
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

captplaystation I cannot confirm or deny...

captplaystation

I cannot confirm or deny that statement, primarily since I have not flown the 737, nor explored these areas in an Airbus.

I would, however, add that Lemurian's I agree with,...
Forum: Tech Log
4th Mar 2009, 07:21
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

HarryMan's heads-up to the AAIB Bulletin Link...

HarryMan's heads-up to the AAIB Bulletin Link (http://www.aaib.gov.uk/cms_resources/S2-2009%20-%20G-EZJK.pdf) on the EJ 737 Norwich incident is well worth reading for it's relevance to this thread:
...
Forum: Tech Log
3rd Mar 2009, 10:13
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

TP... I might be going over things again, but...

TP... I might be going over things again, but summarising what seem to be a few "crucial" parts in the timeline.

At/from 15:45:11 TOGA EPR was being achieved. THS was in the position it remained...
Forum: Tech Log
26th Feb 2009, 08:47
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Our training is firstly the "Normal Law"...

Our training is firstly the "Normal Law" charateristics of Approach to Stall, and the "protections" and the recovery actions. Secondly the Alternate / Direct Law where you now get a Stall Warning...
Forum: Tech Log
25th Feb 2009, 22:11
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

All indications are that the controls were...

All indications are that the controls were working... i.e. Ailerons and Elevators folow the stick inputs closely.

Unfortunately, unless one has experience in how an A320 flies in the stall, one...
Forum: Tech Log
25th Feb 2009, 18:00
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

TP... Reckon you might be right - there are a...

TP... Reckon you might be right - there are a lot of things happening right there, and even if we have all the info (we don't) I am sure the actual dynamics would take some understanding.

It...
Forum: Tech Log
25th Feb 2009, 17:17
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

I would agree in principle. However, for...

I would agree in principle. However, for sometime it did seem to be holding pitch, and then something seemed to change? See 15:45:18 say - pitch is actually reducing (slowly), speed ~130K, full fwd...
Forum: Tech Log
25th Feb 2009, 17:09
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

As you say, these speeds come from the FACs,...

As you say, these speeds come from the FACs, which seem (?) to be fed "frozen" AoA values, hence why they maybe never entered the Normal Law Protections. One would hope that the tables to which you...
Forum: Tech Log
25th Feb 2009, 16:02
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

Yes - because the directly equivalent "toy" is a...

Yes - because the directly equivalent "toy" is a stick shaker, and that would be tested instead for identical (maybe misguided) reasons... But I give up with you on this issue...

NoD
Forum: Tech Log
25th Feb 2009, 15:56
Replies: 1,524
Views: 743,153
Posted By NigelOnDraft

DC-ATE You just don't get it do you :ugh: There...

DC-ATE You just don't get it do you :ugh: There was NO requirement to do this test. It is the exact equivalent of a stall shaker test - and it is just as likely to be tested unnecessarily and at...
Showing results 1 to 35 of 55
 
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