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Search: Posts Made By: BOAC
Showing results 1 to 35 of 60
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Forum: Tech Log
8th Jul 2011, 17:17
Replies: 1,069
Views: 280,274
Posted By BOAC

The two unsolved puzzles for me are:- 1) Why...

The two unsolved puzzles for me are:-
1) Why the climb in the first place
2) Assuming the Captain was able to diagnose a stall, why nothing apart from power really changed all the way down. It is...
Forum: Tech Log
8th Jul 2011, 13:22
Replies: 1,069
Views: 280,274
Posted By BOAC

- how about the duty autopilot - already an...

- how about the duty autopilot - already an 'SOP', no extra buttons. I do, of course, agree with 'more memory'
Forum: Tech Log
8th Jul 2011, 11:14
Replies: 1,069
Views: 280,274
Posted By BOAC

- "Every picture speaks a thousand words". A...

- "Every picture speaks a thousand words". A little help
"It would take some time to absorb what he was witnessing and diagnose a continued stall" - how long would it take you? I'm pretty sure how...
Forum: Tech Log
8th Jul 2011, 10:10
Replies: 1,069
Views: 280,274
Posted By BOAC

- just a million biased miles off track -...

- just a million biased miles off track - avoiding CB's perhaps?

No-one ready to answer my poser with a serious response?
Forum: Tech Log
8th Jul 2011, 09:18
Replies: 1,069
Views: 280,274
Posted By BOAC

A33 - I cannot see any point in carrying on this...

A33 - I cannot see any point in carrying on this direction since we seem to have a language issue and I do not speak 'anywhere'.

You said
"This remark is given in the mentioned FCOM 3.....when a...
Forum: Tech Log
8th Jul 2011, 09:05
Replies: 1,069
Views: 280,274
Posted By BOAC

- we are talking datums, sir. If it don't know...

- we are talking datums, sir. If it don't know that, you are 'dead in the water' as they say.

Anyway, I'd like to move this thread back to a piloting perspective if you would all be patient?
...
Forum: Tech Log
8th Jul 2011, 07:25
Replies: 1,069
Views: 280,274
Posted By BOAC

- yes, you did. By 'omitting' the vital part...

- yes, you did. By 'omitting' the vital part "This remark is given in the mentioned FCOM 3.....when a FCTL STAB CTL FAULT is present." which others have now posted you in fact 'raised more questions...
Forum: Tech Log
7th Jul 2011, 21:37
Replies: 1,069
Views: 280,274
Posted By BOAC

Just remember I did not write the word 'locked'...

Just remember I did not write the word 'locked' in the FCOM please.

KBP - many expresses do not stop until they reach destination. So, for 'lock' we now read 'jammed'? Nothing to do with the...
Forum: Tech Log
7th Jul 2011, 20:51
Replies: 1,069
Views: 280,274
Posted By BOAC

Thank you rrat - I'll wait a couple of pages and...

Thank you rrat - I'll wait a couple of pages and see if anyone else interprets the 'ADIRU' input differently. Are you saying, then, that a low 'detected' IAS will increase effective elevator...
Forum: Tech Log
7th Jul 2011, 20:06
Replies: 1,069
Views: 280,274
Posted By BOAC

OK - that's one vote for a 'sort of inertial'...

OK - that's one vote for a 'sort of inertial' system and one that appears to not understand what the question means. - I'll take you up on that - do you perchance have a system diagram showing inputs...
Forum: Tech Log
7th Jul 2011, 18:49
Replies: 1,069
Views: 280,274
Posted By BOAC

Well, rrat - it is to see HOW exactly it does it,...

Well, rrat - it is to see HOW exactly it does it, do you see? More to the point, do you know? Are there ADC inputs to THS setting? Do I assume you know?

Thanks for replying, by the way.
Forum: Tech Log
7th Jul 2011, 16:21
Replies: 1,069
Views: 280,274
Posted By BOAC

HN - whatever - it is really irrelevant since we...

HN - whatever - it is really irrelevant since we understand NO effective recovery action was taken. Far more interesting (for me) is the answer to my query on #902 which I guess no-one knows? Very...
Forum: Tech Log
7th Jul 2011, 14:19
Replies: 1,069
Views: 280,274
Posted By BOAC

- still hoping someone can enlarge on this...

- still hoping someone can enlarge on this please? Anyone?

HN - I suspect you have been somewhat optimistic in your height loss for achieving manoeuvre speed and pulling out at "1.5g", not...
Forum: Tech Log
7th Jul 2011, 07:57
Replies: 1,069
Views: 280,274
Posted By BOAC

Thanks A33 - I have to admit the word 'locked'...

Thanks A33 - I have to admit the word 'locked' (ie no 'autotrim') does not sit easy with me, especially with what I understand to be a not unusual training policy on AB a/c regarding 'use' of the...
Forum: Tech Log
7th Jul 2011, 07:14
Replies: 1,069
Views: 280,274
Posted By BOAC

- can you tell us please where that unattributed...

- can you tell us please where that unattributed quote is from? If this relates to the 330, I would also appreciate an explanation of how the trim compensates for 'speed' (and which 'speed') ie is...
Forum: Tech Log
6th Jul 2011, 10:52
Replies: 1,069
Views: 280,274
Posted By BOAC

May I rewind to thread #1? As we approach 900...

May I rewind to thread #1? As we approach 900 posts on this thread (4), we are really no further forward, 'experts' having 'dissected' the computer logic, argued with each other over what 'latches',...
Forum: Tech Log
6th Jul 2011, 08:27
Replies: 1,069
Views: 280,274
Posted By BOAC

- John - why not come over to the Safety forum...

- John - why not come over to the Safety forum and join my thread - the water is lovely and warm:)
Forum: Tech Log
5th Jul 2011, 14:56
Replies: 1,069
Views: 280,274
Posted By BOAC

RR - re your 1) - that is why I suggested the FDR...

RR - re your 1) - that is why I suggested the FDR be 'biased' to PF rather than LHS as appears at present.
Forum: Tech Log
4th Jul 2011, 21:22
Replies: 1,069
Views: 280,274
Posted By BOAC

- may I (as an aeronautically trained engineer,...

- may I (as an aeronautically trained engineer, of course...) ask you

Where is the evidence it did not? and

is not the second part of your para the whole nub of the accident? They would...
Forum: Tech Log
4th Jul 2011, 21:02
Replies: 1,069
Views: 280,274
Posted By BOAC

Now it has quietened down again, can I ask if...

Now it has quietened down again, can I ask if anyone knows exactly which other bits of RHS 'important' data (apart from IAS) are not recorded?

Thank you, Gums.
Forum: Tech Log
4th Jul 2011, 20:19
Replies: 1,069
Views: 280,274
Posted By BOAC

- well, in respect of this thread, this one of...

- well, in respect of this thread, this one of yours is not.,
Forum: Tech Log
4th Jul 2011, 15:06
Replies: 1,069
Views: 280,274
Posted By BOAC

- entirely up to you 'Airbus folk', but I would...

- entirely up to you 'Airbus folk', but I would prefer anything RELEVANT and based on known facts for a start?.
Forum: Tech Log
4th Jul 2011, 12:56
Replies: 1,069
Views: 280,274
Posted By BOAC

- can we have a link please or is it a typo? ...

- can we have a link please or is it a typo?

Takata- we understand PF's ASI readings were not recorded.
Forum: Tech Log
4th Jul 2011, 10:51
Replies: 1,069
Views: 280,274
Posted By BOAC

Folks - why waste time on speculation? It is not...

Folks - why waste time on speculation? It is not rocket science to find out who was in the RHS. I guess that IF we need to know BEA will tell us. In any case, does it really matter?
Forum: Tech Log
4th Jul 2011, 09:55
Replies: 1,069
Views: 280,274
Posted By BOAC

While you all debate FDRs etc, is there any merit...

While you all debate FDRs etc, is there any merit in prioritising PF' s data rather than LHS?
Forum: Tech Log
2nd Jul 2011, 15:27
Replies: 1,069
Views: 280,274
Posted By BOAC

T'was brave pilote de chasse wot got him there.

T'was brave pilote de chasse wot got him there.
Forum: Tech Log
2nd Jul 2011, 14:58
Replies: 1,069
Views: 280,274
Posted By BOAC

All this discussion of 'forewarning' is to my...

All this discussion of 'forewarning' is to my mind a waste of time. The thing to do is to PREVENT HAL doing something stupid when things do 'off schedule' as he did in the 2001 A340 case. Providing...
Forum: Tech Log
2nd Jul 2011, 08:21
Replies: 1,069
Views: 280,274
Posted By BOAC

The issue should not be 'how difficult is it to...

The issue should not be 'how difficult is it to fly by hand?' but can the pilots do it? Essentially, in a fbw system, failures of the sort 447 experienced constitute a major emergency. JC makes a...
Forum: Tech Log
1st Jul 2011, 15:31
Replies: 1,069
Views: 280,274
Posted By BOAC

- that should not be a deterrent to adopting...

- that should not be a deterrent to adopting Dozy's idea a way back - straight to D Law. This a/c was effectively 'crippled' in terms of continuing to CDG so all that was required (if possible) was a...
Forum: Tech Log
1st Jul 2011, 08:08
Replies: 1,069
Views: 280,274
Posted By BOAC

PJ - you may elect to 'opt out' of the argument,...

PJ - you may elect to 'opt out' of the argument, but I will continue to press for a major change in attitudes for all, but particularly fbw system training. As I have said elsewhere, a lot of the...
Forum: Tech Log
30th Jun 2011, 19:53
Replies: 1,069
Views: 280,274
Posted By BOAC

PJ - you will find on another thread that I...

PJ - you will find on another thread that I endorse your views that a " different way of thinking, a different approach to training" is needed and that I do not think it is in place.

I firmly...
Forum: Tech Log
30th Jun 2011, 14:23
Replies: 1,069
Views: 280,274
Posted By BOAC

PJ - can you explain the logic of the angle of...

PJ - can you explain the logic of the angle of attack protection? I can understand why the system might want to LIMIT AoA to alpha-prot (desirable), but why design it to pitch up to it from level...
Forum: Tech Log
29th Jun 2011, 10:08
Replies: 1,069
Views: 280,274
Posted By BOAC

- small print noted :O It is perhaps...

- small print noted :O

It is perhaps pertinent to point out that all the pilots (whose bodies have been recovered from the Med and the Atlantic from the two accidents) had done so, so I'm not too...
Forum: Tech Log
28th Jun 2011, 18:15
Replies: 1,069
Views: 280,274
Posted By BOAC

Ah well. You see what you see, I guess. "If...

Ah well. You see what you see, I guess.

"If this is activated by a transient high alpha value, then when that transient effect goes away, you will get a climb. Alpha-floor then probably kicks...
Forum: Tech Log
28th Jun 2011, 12:01
Replies: 1,069
Views: 280,274
Posted By BOAC

- do I take it that you are saying that the 2001...

- do I take it that you are saying that the 2001 incident was caused by alpha reaching alpha-prot during an over-speed event, then? - I would suggest that a far better solution would have been to...
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