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Search: Posts Made By: Lyman
Showing results 1 to 35 of 40
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Forum: Rumours & News
27th Jan 2013, 23:03
Replies: 518
Views: 295,619
Posted By Lyman

I think there may have been three poorly defined...

I think there may have been three poorly defined solutions on the flightdeck, no one working with another. Their velocity at runway end was 140 mph. That is flying speed, I think, and no wheel tracks...
Forum: Rumours & News
24th Jan 2013, 18:25
Replies: 518
Views: 295,619
Posted By Lyman

Not weight on the wheel, no spin....? The wheel...

Not weight on the wheel, no spin....? The wheel will not turn w/o weight, and the brakes will not compress if the wheel is not spinning.

They are related, but different? :ok:
Forum: Rumours & News
24th Jan 2013, 18:22
Replies: 518
Views: 295,619
Posted By Lyman

BOAC Isn't autobrake sensitive to spin? If...

BOAC

Isn't autobrake sensitive to spin? If the wheel is not turning, the brake thinks it is locked, and "releases".

But I read the original to suggest that WOW was necessary for brake...
Forum: Rumours & News
13th Jan 2013, 15:40
Replies: 518
Views: 295,619
Posted By Lyman

The chain reaction of the Internet is to be taken...

The chain reaction of the Internet is to be taken with a grain of salt. "Information" is taken from one site, repackaged, and reported in another. With all respect, most of what is available on any...
Forum: Rumours & News
13th Jan 2013, 00:07
Replies: 518
Views: 295,619
Posted By Lyman

All of that is in the data. It will be...

All of that is in the data. It will be interesting to see if the mains were on the ground. From the nose damage, it looks like the NG collapsed. The video shows a pronounced nose drop, there seem to...
Forum: Rumours & News
9th Jan 2013, 15:43
Replies: 518
Views: 295,619
Posted By Lyman

Prior to Machaca's three catches, the a/c was...

Prior to Machaca's three catches, the a/c was well right of the roadway, and still in the :23 stamp. Of more interest would be all the :23 catches, for reference' sake. It is assumed by the damage...
Forum: Rumours & News
8th Jan 2013, 20:07
Replies: 518
Views: 295,619
Posted By Lyman

I would not rule out some NU prior to impact with...

I would not rule out some NU prior to impact with the downslope, perhaps due some lift from the wings. With tail impact, the nose would have dropped with force, and rebounded, perhaps allowing the...
Forum: Rumours & News
8th Jan 2013, 03:04
Replies: 518
Views: 295,619
Posted By Lyman

Hi Machinbird.. Without adding for parallax...

Hi Machinbird..

Without adding for parallax to augment rate, I still get two fuselage lengths in a bit over one second. That is wicked fast, so I go to what I think would be a very conservative...
Forum: Rumours & News
7th Jan 2013, 14:58
Replies: 518
Views: 295,619
Posted By Lyman

Xcept at 30-50 knots, should we look at...

Xcept at 30-50 knots, should we look at crashworthiness? :ugh:
Forum: Rumours & News
5th Jan 2013, 03:45
Replies: 518
Views: 295,619
Posted By Lyman

J.O. 3Jan 22:15... The video demonstrates...

J.O. 3Jan 22:15...


The video demonstrates a test of EMAS with a 727. From text elsewhere, the entry speed is 70 knots, and the aircraft stops in roughly 3+ fuselage lengths.

The nose gear...
Forum: Rumours & News
4th Jan 2013, 16:09
Replies: 518
Views: 295,619
Posted By Lyman

This is an overrun excursion into obstacles. As...

This is an overrun excursion into obstacles. As such, a dependence on one possible theory of engine damage needs to be doubted. The aircraft was roughly following terrain in its final 200 meters,...
Forum: Rumours & News
4th Jan 2013, 15:04
Replies: 518
Views: 295,619
Posted By Lyman

Perpignan... I still say the time to be...

Perpignan...

I still say the time to be extra careful is just out of maintenance not just going in
Forum: Rumours & News
3rd Jan 2013, 19:33
Replies: 518
Views: 295,619
Posted By Lyman

Thanks JO for the info Burbank, and the vid. ...

Thanks JO for the info Burbank, and the vid.

Burbank. I note the distinct grill appearance of the EMAS. You say the system is also installed to and through the centreline? And painted? To mimic...
Forum: Rumours & News
3rd Jan 2013, 17:56
Replies: 518
Views: 295,619
Posted By Lyman

Kulverstukas... Howdy! From Google, I see...

Kulverstukas...

Howdy! From Google, I see what is certainly a displaced threshold, seemingly without big white XXXX, on 01.

Is three point five km accurate for usable?
Forum: Rumours & News
3rd Jan 2013, 17:44
Replies: 518
Views: 295,619
Posted By Lyman

I see one EMAS on 08, and not on runway heading....

I see one EMAS on 08, and not on runway heading. Is EMAS dedicated to prior mayday, as in, "cleared for 08 the EMAS" ?

Does one need to plan for an "in the weeds" arrest? (off heading)

I guess...
Forum: Rumours & News
3rd Jan 2013, 16:00
Replies: 518
Views: 295,619
Posted By Lyman

Kulverstukas I get the 7M from the link. It...

Kulverstukas

I get the 7M from the link. It may be the original cost, a repair may be less.
My point is that it is not cheap, and I have misgivings about its use anyway.

Better e well...
Forum: Rumours & News
3rd Jan 2013, 13:25
Replies: 518
Views: 295,619
Posted By Lyman

Hello overun. Thanks for your meticulous reply. I...

Hello overun. Thanks for your meticulous reply. I have updated my file.

I am embarrassed to have used "landing gear destroyed". I think our vocubalary is otherwise similar, and I note your salient...
Forum: Rumours & News
3rd Jan 2013, 07:39
Replies: 518
Views: 295,619
Posted By Lyman

I must be not understanding, overun. you suggest...

I must be not understanding, overun. you suggest that EMAS' mechanism for energy dissipation is 'braking'. If a 125 meter bed 'effectively' provides 175m of 'additional runway braking', then the...
Forum: Rumours & News
3rd Jan 2013, 03:08
Replies: 518
Views: 295,619
Posted By Lyman

Definitely a "Concordski" flavor at the...

Definitely a "Concordski" flavor at the helm.....
Forum: Rumours & News
2nd Jan 2013, 17:07
Replies: 518
Views: 295,619
Posted By Lyman

That leaves less than 5000 feet before disaster....

That leaves less than 5000 feet before disaster. If the CCTV is accurate, that there were 30 seconds between TD and impact, that is an average velocity of approx. 115 mph. Allowing some velocity at...
Forum: Rumours & News
2nd Jan 2013, 09:43
Replies: 518
Views: 295,619
Posted By Lyman

I completely agree. The velocity off the runway...

I completely agree. The velocity off the runway and into the obstructions was not compatible with survival. The runway's length cannot be published as it is; better to publish a shorter value, and...
Forum: Rumours & News
2nd Jan 2013, 02:56
Replies: 518
Views: 295,619
Posted By Lyman

fdr The first estimation I saw was of 50-60...

fdr

The first estimation I saw was of 50-60 knots. So I viewed the video probably 100 times, checked on the length of the a/c, studied the diagrams of the overrun, with LOC and downslope, pit, and...
Forum: Rumours & News
1st Jan 2013, 20:58
Replies: 518
Views: 295,619
Posted By Lyman

So off the end at 140mph? Touch at 165? Or 140 at...

So off the end at 140mph? Touch at 165? Or 140 at impact? Is there a link to this autre website?



Здравствуйте все участники данного форума.Всем доброго времени суток.. Кстати-всех вас с...
Forum: Rumours & News
1st Jan 2013, 20:49
Replies: 518
Views: 295,619
Posted By Lyman

How many km/h in 100 knots? Plus revision up? ...

How many km/h in 100 knots? Plus revision up?

The combination of Mx and judgment/competence is going to be chilling, just a guess. At the very beginning is going to be the approach, landing brief,...
Forum: Rumours & News
1st Jan 2013, 16:53
Replies: 518
Views: 295,619
Posted By Lyman

Howdy hetfield, I'm sorry, I didn't mean to...

Howdy hetfield,

I'm sorry, I didn't mean to be pedantic...
Forum: Rumours & News
1st Jan 2013, 16:37
Replies: 518
Views: 295,619
Posted By Lyman

It still needs to be available, in case the TD is...

It still needs to be available, in case the TD is late, or brakes are marginal?
Forum: Rumours & News
1st Jan 2013, 16:31
Replies: 518
Views: 295,619
Posted By Lyman

Do "other types" have reverse....."issues"? ...

Do "other types" have reverse....."issues"?

See, that is the thing. Pilots are the last to know, officially....these guys in Moscow may not have known what others did.....did they know?

If my...
Forum: Rumours & News
1st Jan 2013, 16:06
Replies: 518
Views: 295,619
Posted By Lyman

Kulverstukas... Firstly. Grateful for the...

Kulverstukas...

Firstly. Grateful for the wealth of info you supply.

I am sure it is operator specific? Perhaps not?

Is "Cycle Reverse Doors" on the pre push CL? I'm sure it is, since they...
Forum: Rumours & News
31st Dec 2012, 23:11
Replies: 518
Views: 295,619
Posted By Lyman

Is there a system that avails brakes...

Is there a system that avails brakes independently of WOW? These guys did not need reverse, but they needed brakes. Is there a 'brake at your risk' switch that a pilot can use when he knows he is on...
Forum: Rumours & News
31st Dec 2012, 22:29
Replies: 518
Views: 295,619
Posted By Lyman

EASA did that with Qantas32. AAIB did that with...

EASA did that with Qantas32. AAIB did that with BA038.

If you have evidence that people will die unless an EAD is let, you let the EAD.

no? Saving ass better than saving face....
Forum: Rumours & News
31st Dec 2012, 16:03
Replies: 518
Views: 295,619
Posted By Lyman

Kulverstukas Rosaviation sent today urgent...

Kulverstukas Rosaviation sent today urgent addition to flight manual of 204/214.
"Att! In case of reverse not switching on after levers in position "small reverse" (reverse idle?) (no green light...
Forum: Rumours & News
31st Dec 2012, 15:13
Replies: 518
Views: 295,619
Posted By Lyman

That would be the definition of "in the corner"....

That would be the definition of "in the corner". No braking, (or poor) and a running out of runway.

Quickly, run off the end at speed, or try to re launch? May God prevent my placement in a...
Forum: Rumours & News
31st Dec 2012, 14:39
Replies: 518
Views: 295,619
Posted By Lyman

Yes, I am tempted to revise my estimate of 100...

Yes, I am tempted to revise my estimate of 100 knots, upward. It appears, with some visualization, that the 204 might even be at "flying speed", though insufficient for rotation. The overrun drops,...
Forum: Rumours & News
31st Dec 2012, 14:05
Replies: 518
Views: 295,619
Posted By Lyman

Thank you for these pictures... It is a very sad...

Thank you for these pictures... It is a very sad time.
Forum: Rumours & News
31st Dec 2012, 05:24
Replies: 518
Views: 295,619
Posted By Lyman

fdr I too took notice of the attitude change...

fdr

I too took notice of the attitude change in the image couplet. I hesitate to infer speed or rate of pitch decrease. However, to see a decrease in Pitch at this point in the landing is strange....
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