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Search: Posts Made By: FullWings
Showing results 1 to 35 of 39
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Forum: Rumours & News
11th Jan 2010, 21:19
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Fuel flow is not one of the primary engine...

Fuel flow is not one of the primary engine indications (EPR, N1 & EGT are). At that point on the approach, the handling pilot would have had his hand resting on the thrust levers and would have felt...
Forum: Rumours & News
11th Jan 2010, 13:08
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Bis47, I think the majority of what you're...

Bis47,

I think the majority of what you're saying is accurate, even essential reading for when you end up in a forced undershoot situation. However, I do think it unrealistic to expect many...
Forum: Rumours & News
13th Mar 2009, 08:32
Replies: 3,239
Views: 1,137,490
Posted By FullWings

From the AAIB recent interim report: And:...

From the AAIB recent interim report:


And:



It does seem that there is a lot more to learn here that may apply to other types of 777 or even other types of aircraft. It's nice to have a...
Forum: Rumours & News
20th Jan 2009, 16:06
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Definitely. Hmm. That's an interesting...

Definitely.

Hmm. That's an interesting proposition. Vref is an artificial construction ranging from about 1.2 to 1.3Vs in airliners - if it happened to be the best gliding speed in a particular...
Forum: Rumours & News
19th Jan 2009, 18:15
Replies: 3,239
Views: 1,137,490
Posted By FullWings

AF, Several of the posters on this thread...

AF,

Several of the posters on this thread probably a) fly for BA, b) are in or know Management c), have contacts in the AAIB/NTSB/RR (or are employed by one of these organisations), d) have a...
Forum: Rumours & News
19th Jan 2009, 16:12
Replies: 3,239
Views: 1,137,490
Posted By FullWings

AF, I can sense your frustration (almost a...

AF,

I can sense your frustration (almost a disturbance in the Force) but there are many serious, lab-coat-wearing, possibly pipe-smoking engineers and scientists working on this problem and the...
Forum: Rumours & News
14th Nov 2008, 16:54
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Hi CONF iture, I took the EPR levels from...

Hi CONF iture,

I took the EPR levels from page 2 of the most recent AAIB Interim Report, where it states: "...at a height of about 720ft the thrust of the right engine reduced to approximately...
Forum: Rumours & News
13th Nov 2008, 07:05
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Unfortunately, far enough. With F30 in calm...

Unfortunately, far enough.

With F30 in calm conditions, you're going to need about 1.05-1.06EPR (c.50-55%N1) to maintain a 3deg slope, fully configured at Vref30+5, at the approximate landing...
Forum: Rumours & News
10th Sep 2008, 10:20
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Very difficult to say, due to the...

Very difficult to say, due to the unpredictability of ground effect, wind gradient, drag characteristics of a 'dirty' airframe, engines that were producing significant thrust, etc. It's something...
Forum: Rumours & News
4th Sep 2008, 16:57
Replies: 3,239
Views: 1,137,490
Posted By FullWings

borghha, From P.12 of the interim report:...

borghha,


From P.12 of the interim report:




From P.11:
Forum: Rumours & News
4th Sep 2008, 16:43
Replies: 3,239
Views: 1,137,490
Posted By FullWings

I think the most interesting/important part of...

I think the most interesting/important part of the report is this:


Which opens up the possibility that the BA38 scenario might not be confined to the RR 777, or indeed to the 777 at all...:ooh:
Forum: Rumours & News
7th Aug 2008, 09:53
Replies: 3,239
Views: 1,137,490
Posted By FullWings

I'm sure many of us are: we've read the interim...

I'm sure many of us are: we've read the interim reports and now we're waiting for the final one.


Possibly because, at present, no such guidance exists in any form?


I wonder what they've...
Forum: Rumours & News
23rd Jul 2008, 13:07
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Well said. You could also add that if you...

Well said.

You could also add that if you restrict/ground a particular aircraft type over one incident and subsequently are unable to find anything in particular that is wrong with it, how do you...
Forum: Rumours & News
9th Jun 2008, 21:57
Replies: 3,239
Views: 1,137,490
Posted By FullWings

It still doesn't make sense, though. With the...

It still doesn't make sense, though. With the tank pumps running and the manifold(s) pressurised, fuel is going to leak out rather than air leak in... Unless there was a massive failure of NRVs...
Forum: Rumours & News
9th Jun 2008, 09:05
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Airfoilmod, There are no 'lockouts' that I'm...

Airfoilmod,

There are no 'lockouts' that I'm aware of. Selecting alternate mode makes N1 the controlling parameter and this is referenced to the thrust lever position. This means it is possible to...
Forum: Rumours & News
8th Jun 2008, 13:56
Replies: 3,239
Views: 1,137,490
Posted By FullWings

And it helped, did it? :rolleyes: It's...

And it helped, did it? :rolleyes:

It's possible to 'rich cut' a carb-fed piston engine by being aggressive on the throttle at a low power setting, on something with an accelerator pump... Maybe...
Forum: Rumours & News
8th Jun 2008, 13:09
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Not for anyone who was a jet pilot. About...

Not for anyone who was a jet pilot.

About the only time you'd think of retarding a thrust lever when you're undershooting, in an attempt to 'cure' an engine problem, would be if it was surging...
Forum: Rumours & News
5th Jun 2008, 15:12
Replies: 3,239
Views: 1,137,490
Posted By FullWings

I doubt it, given the situation was a developing...

I doubt it, given the situation was a developing undershoot being caused by a lack of power, despite firewalling the thrust levers. What would you "go-around" with at this point?

Not all...
Forum: Rumours & News
5th Jun 2008, 10:21
Replies: 3,239
Views: 1,137,490
Posted By FullWings

From reading the AAIB reports, it would seem...

From reading the AAIB reports, it would seem every component they've tested so far does/has work(ed) according to design parameters. This includes the integrity of the fuel supply system from both...
Forum: Rumours & News
3rd Jun 2008, 17:40
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Airfoilmod, We still have pitots on the 777,...

Airfoilmod,

We still have pitots on the 777, according to Boeing. Managed to get a "HEAT PITOT LEFT" the other day.

The engine PT2/TT2 probe heater systems will generate "ENG EEC MODE (L/R)"...
Forum: Rumours & News
3rd Jun 2008, 15:14
Replies: 3,239
Views: 1,137,490
Posted By FullWings

GDMS, When referring to the "engine anti-ice...

GDMS,

When referring to the "engine anti-ice system", most pilots would call this the cowl hot air, that stops ice building up in the inlet then coming off in big chunks and going through the...
Forum: Rumours & News
27th May 2008, 09:40
Replies: 3,239
Views: 1,137,490
Posted By FullWings

gerryfoley, Not quite. According to the...

gerryfoley,


Not quite. According to the AAIB, BA38 had complied with BA stabilised approach criteria, i.e. it was in the landing config. by 1,000'AAL with approach power set. As there was some...
Forum: Rumours & News
12th May 2008, 22:44
Replies: 3,239
Views: 1,137,490
Posted By FullWings

From AAIB report: The really...

From AAIB report:



The really interesting thing here is: how often has something similar to what happened to MMM occurred (restricted fuel flow) but gone unnoticed as the restriction was not...
Forum: Rumours & News
8th May 2008, 15:21
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Always a possibility. However, I can't see a...

Always a possibility. However, I can't see a realistic way of duplicating what happened to BA38, even if I had to. How could you cause both engines to 'hang' above flight idle when you're sitting on...
Forum: Rumours & News
4th May 2008, 21:00
Replies: 3,239
Views: 1,137,490
Posted By FullWings

And icing would have affected other aircraft on...

And icing would have affected other aircraft on approach to LHR at that time, including many 777-200ERs, so why weren't they all falling out of the sky on the same flight profile?
Forum: Rumours & News
17th Apr 2008, 18:34
Replies: 3,239
Views: 1,137,490
Posted By FullWings

The reports seem to indicate that this was the...

The reports seem to indicate that this was the case.


I've had a ponder about how you could deliberately restrict (not shut off) the fuel flow to the engines and I can't really think of a...
Forum: Rumours & News
17th Apr 2008, 16:38
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Do you mean something like this? I...

Do you mean something like this?



I wouldn't take silence on the part of the AAIB/Boeing/RR/BA to mean that investigative work has slowed down; just that there is nothing more to report that...
Forum: Rumours & News
10th Apr 2008, 09:04
Replies: 3,239
Views: 1,137,490
Posted By FullWings

That can be done but remember the BA38 was not a...

That can be done but remember the BA38 was not a glider: the engines were still producing significant thrust, albeit not enough to maintain a 3deg slope in full landing config. This would have had...
Forum: Rumours & News
7th Apr 2008, 17:31
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Maybe someone with engineering schematics could...

Maybe someone with engineering schematics could comment but I was under the impression that the 777 spar valve sensing system has three states, i.e. Open, Closed and In Transit. If this is true, then...
Forum: Rumours & News
31st Mar 2008, 17:18
Replies: 3,239
Views: 1,137,490
Posted By FullWings

I think that came out pretty early on... ...

I think that came out pretty early on...

from the AAIB initial report, Feb. 2008:




Basically, there doesn't seem to be any new information; indeed, even the speculation seems to be...
Forum: Rumours & News
25th Feb 2008, 11:08
Replies: 3,239
Views: 1,137,490
Posted By FullWings

These are optional, according to Boeing, and are...

These are optional, according to Boeing, and are currently fitted by some Far-East airlines. ;)
Forum: Rumours & News
25th Feb 2008, 10:46
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Apart from the fact that they would have been...

Apart from the fact that they would have been physically turned off on the overhead panel about 1/3 the way into the flight. The scavenge pumps would have run later on to leave the CWT empty some...
Forum: Rumours & News
25th Feb 2008, 10:36
Replies: 3,239
Views: 1,137,490
Posted By FullWings

I suppose it's a question of alternatives. With...

I suppose it's a question of alternatives. With the autopilot engaged, it will carry on down the LOC and GS, slowly losing speed; this is not necessarily a bad thing (as a temporary measure) and it...
Forum: Rumours & News
25th Feb 2008, 09:25
Replies: 3,239
Views: 1,137,490
Posted By FullWings

WR, He might not have wanted to recommend...

WR,


He might not have wanted to recommend anything lower to line pilots. I'm sure the laws of physics change depending on who's sat in the seat. ;)

I don't know what the figures are - I would...
Forum: Rumours & News
25th Feb 2008, 08:24
Replies: 3,239
Views: 1,137,490
Posted By FullWings

Think about how long there was between the onset...

Think about how long there was between the onset of the problem and touchdown; then take away the time for overcoming the initial shock and coming to some understanding of what has happened... Not...
Showing results 1 to 35 of 39
 
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