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Search: Posts Made By: Chris Scott
Showing results 1 to 35 of 45
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Forum: Tech Log
9th Jul 2011, 13:47
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Use of Sidestick (continued)

Quote from Linktrained:
From the threads that I have read inly a few mm of movement would cause the THS to try to compensate by increasing from the initial cruising figure of 3 or 4 NU.

I don’t...
Forum: Tech Log
8th Jul 2011, 23:05
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Quote from Idle Thrust: "...has it been...

Quote from Idle Thrust:
"...has it been established that with the THS at the end of its range (13), with full nose down SS, the elevator would not have enough effect to lower the nose?
There have...
Forum: Tech Log
8th Jul 2011, 12:11
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Meikleour, (Where have you been lurking...?) ;)...

Meikleour,
(Where have you been lurking...?) ;)

Very interesting, though I note your sim caveat. Don't know what AoA you're talking about, of course, but could it be something to do with...
Forum: Tech Log
8th Jul 2011, 11:31
Replies: 1,069
Views: 281,408
Posted By Chris Scott

BOAC, That's what I thought. So I hope you...

BOAC,

That's what I thought. So I hope you don't disagree with my crude explanation, and how it relates to Airbus FBW is a bit clearer.
Forum: Tech Log
8th Jul 2011, 11:17
Replies: 1,069
Views: 281,408
Posted By Chris Scott

jcjeant, I can see why you infer that the...

jcjeant,

I can see why you infer that the BEA is contradicting itself, but that is not necessarily the case. As I explain in my post above. the THS reached 13 NU because the EFCS was trimming out...
Forum: Tech Log
8th Jul 2011, 10:31
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Primary and Secondary Pitch=Control

In case anyone is getting the wrong impression, let me chip-in an important point to this THS discussion.

BOAC is focussed on discussing the THS as if it is used as a primary flight control....
Forum: Tech Log
7th Jul 2011, 19:12
Replies: 1,069
Views: 281,408
Posted By Chris Scott

PJ2, Thanks for confirming that the...

PJ2,
Thanks for confirming that the THS-position indicator is visible from the P3 seat, as I expected. However, I should admit that, on entering the low-lit cockpit from the front vestibule (or...
Forum: Tech Log
7th Jul 2011, 15:55
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Quote from mm43: It is worth noting that no...

Quote from mm43:
It is worth noting that no control surface systems fault warnings entered the the CMC and resulted in ACARS messages. There was plenty of time for them to be transmitted, and due to...
Forum: Tech Log
7th Jul 2011, 15:52
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Garage Years, Thanks for the photos and yes,...

Garage Years,
Thanks for the photos and yes, EMIT, there is a perspective problem with that wide-angle lens. Both pilots' seats look to be well-aft of their normal in-flight positions, particularly...
Forum: Tech Log
7th Jul 2011, 11:18
Replies: 1,069
Views: 281,408
Posted By Chris Scott

HarryMann, That was a most thoughtful and...

HarryMann,
That was a most thoughtful and relevant post.

Just a few thoughts of my own, based first on your numbered ones:
1) The inhibition of the stall-warning when the sensed airspeed falls...
Forum: Tech Log
7th Jul 2011, 10:13
Replies: 1,069
Views: 281,408
Posted By Chris Scott

A33Zab, Without affecting my previous, I now...

A33Zab,
Without affecting my previous, I now notice from your two centre-console photos that there is a difference in the THS-position indicators between the A320 and the A330. The A320's are...
Forum: Tech Log
7th Jul 2011, 09:40
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Hi A33Zab, Love your photos – thanks. But am at...

Hi A33Zab,
Love your photos – thanks. But am at a loss to understand your visibility problem. Could we be misunderstanding one another?
Quote:
Sorry Chris, still not convinced, maybe (for A330)...
Forum: Tech Log
7th Jul 2011, 08:43
Replies: 1,069
Views: 281,408
Posted By Chris Scott

The view from the P3 seat

Turbine_D and A33Zab,
Thanks for your responses. The view in the photo is exactly what I have in mind and memory, and could easily be mistaken for an A320 centre-console. (I presume, however, it is...
Forum: Tech Log
6th Jul 2011, 23:54
Replies: 1,069
Views: 281,408
Posted By Chris Scott

P3 Seat

A33Zab,
The link you posted is to a photo taken from the P1 seat, probably in its aft position. AFAIK, we do not yet know where the captain sat or stood during his all-too-brief return to the...
Forum: Tech Log
6th Jul 2011, 21:22
Replies: 1,069
Views: 281,408
Posted By Chris Scott

CONF_iture, Are you sure the sidesticks are not...

CONF_iture,
Are you sure the sidesticks are not visible from the P3 seat, even if you lean forwards? They are on the A320.

A33Zab, quote:
"In respect of Capt, IMO he realized exact what was...
Forum: Tech Log
6th Jul 2011, 16:01
Replies: 1,069
Views: 281,408
Posted By Chris Scott

bearfoil, Yes, that's my understanding. But I'm...

bearfoil,
Yes, that's my understanding. But I'm not sure that ADR1 displays both CAS and altitude on PFD1 (the L/H PFD). Now, where was that schematic that someone kindly posted an eon back? :{
Forum: Tech Log
6th Jul 2011, 15:44
Replies: 1,069
Views: 281,408
Posted By Chris Scott

ASI strip on PFDs

PJ2,
Thanks for the PFD and centre-pedestal pictures (http://www.pprune.org/tech-log/454653-af-447-thread-no-4-a-41.html#post6554443) yesterday. At what stage would you say the ASI strips on each...
Forum: Tech Log
6th Jul 2011, 15:41
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Initial pitch-up

bearfoil, BOAC, and others,
At risk of unnecessary repetition, the BEA Interim Report #2 (Page 48) shows that, with a sudden drop in the perceived dynamic pressure (blocked pitots) the ADR will...
Forum: Tech Log
5th Jul 2011, 12:17
Replies: 1,069
Views: 281,408
Posted By Chris Scott

ASI 2

Quote from PA_18_151:
At 2 h 12 min 02, the PF said "I don’t have any more indications", and the PNF said "we have no valid indications".
That, to me at least, indicates confusion. Either
1)...
Forum: Tech Log
4th Jul 2011, 18:40
Replies: 1,069
Views: 281,408
Posted By Chris Scott

takata, Thanks for your very careful...

takata,
Thanks for your very careful explanation. It was the word "leg" that I needed to be clarified. Anglophone crews usually use it to mean "sector", i.e., the whole of a flight.
Forum: Tech Log
4th Jul 2011, 18:34
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Quote from BOAC: "...I would prefer anything...

Quote from BOAC:
"...I would prefer anything RELEVANT and based on known facts for a start?."

Known facts are still in fairly short supply, and some may never be known. As you evidently think...
Forum: Tech Log
4th Jul 2011, 13:06
Replies: 1,069
Views: 281,408
Posted By Chris Scott

cwatters, quote: "Is it possible the pilots...

cwatters, quote:
"Is it possible the pilots seat position contributed to the incident?
"For example if [...] that was a bit far back for him, could that have caused him to inadvertantly apply back...
Forum: Tech Log
4th Jul 2011, 09:45
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Crew composition

For the reason PJ2 has stated – pilot development – it makes absolute sense to ensure that all copilots remain fully qualified in the R/H Seat. I now infer from takata that Air France may not have...
Forum: Tech Log
4th Jul 2011, 00:44
Replies: 1,069
Views: 281,408
Posted By Chris Scott

PJ2, quote: All this is largely from the...

PJ2, quote:
All this is largely from the A300-600 FCOM information on "Abnormal Procedures - PITOT PROBE DESIGN, (posted by Chris Scott or gums which I can no longer find on the previous threads)
...
Forum: Tech Log
3rd Jul 2011, 15:19
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Stalls and ailerons

Quotes

jcjeant:
"Think ... maximum deflection to the left (for 30 seconds .. what a very long time) and the aircraft would not embark on a sharp left turn (or bank angle) ... very strange .....
Forum: Tech Log
2nd Jul 2011, 18:09
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Dozy Wanabee, quote: The problem I have is how...

Dozy Wanabee, quote:
The problem I have is how the system would attempt to calculate G-loading in this scenario.
Not sure exactly what you mean by "calculate", but if not fully capable how could...
Forum: Tech Log
2nd Jul 2011, 16:53
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Dozy Wanabee, Sorry, and I couldn't find...

Dozy Wanabee,

Sorry, and I couldn't find where you'd said it either. Guess you were misquoted.

Re the THS trimming. It occurred while the aircraft was in a semi-parabolic trajectory, having...
Forum: Tech Log
2nd Jul 2011, 16:06
Replies: 1,069
Views: 281,408
Posted By Chris Scott

BOAC, Never knew a navigator demand a 360... ;)...

BOAC,
Never knew a navigator demand a 360... ;)

Quote:
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 his...
Forum: Tech Log
2nd Jul 2011, 15:47
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Warnings, hierarchy and ECAM

RetiredF4,
The warnings and their hierarchy are not so different from yours in principle. On current Airbuses, there is no WLDP (warning-lights display panel), but the system PBs (push-button...
Forum: Tech Log
2nd Jul 2011, 11:29
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Quote from Linktrained: The PF on AF447 may...

Quote from Linktrained:
The PF on AF447 may have seldom hand flown at cruising level. If, and just if, he had gripped the SS too firmly with his fingers, would this, could this, induce a NU, which...
Forum: Tech Log
2nd Jul 2011, 11:08
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Quote from BOAC: JC makes a very valid point in...

Quote from BOAC:
JC makes a very valid point in #624 - is 'flying by hand' actually what happens or is there still something 'interfering' and thinking it knows better?

That is why Dozy Wanabee...
Forum: Tech Log
1st Jul 2011, 23:50
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Mr Optimistic, quote: "Is there any evidence or...

Mr Optimistic, quote:
"Is there any evidence or reason to suspect that the a/c is difficult to hand fly ?"
Probably not, but perhaps PJ2, CONF_iture or Tubby Linton will comment. We are told that...
Forum: Tech Log
1st Jul 2011, 20:18
Replies: 1,069
Views: 281,408
Posted By Chris Scott

RR_NDB, In replying to my post, you have missed...

RR_NDB,
In replying to my post, you have missed the point I was trying to make, although you have made another perfectly reasonable one. I doubt it's possible to delay the downgrade from Normal Law....
Forum: Tech Log
1st Jul 2011, 13:58
Replies: 1,069
Views: 281,408
Posted By Chris Scott

I presume this discussion on phugoid oscillations...

I presume this discussion on phugoid oscillations relates to the A340 AIRPROX? I used to do a nice one myself occasionally in the climb on aeroplanes like VC10 and B707 – unintentionally, of course,...
Forum: Tech Log
22nd Jun 2011, 16:21
Replies: 1,069
Views: 281,408
Posted By Chris Scott

Quote from PJ2: "The BEA states that the...

Quote from PJ2:
"The BEA states that the pitch-up was caused by a side-stick being pulled back. We have good reason to take that at face value until the next Interim Report because at some point...
Showing results 1 to 35 of 45
 
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