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-   -   Spanair accident at Madrid (https://www.pprune.org/rumours-news/339876-spanair-accident-madrid.html)

PJ2 21st Aug 2008 01:45

curi;

Is posible a tire explosion of landing gear. The airplane when was taxing, returned to parking because have problems with Outisde and RAM sensor, but is´nt problem for GO, the difference is what are use the tables and calculate the effective EPR.
The tire doesn't explode but yes, it is possible the tire shed some tread and it is possible that it went into the engine. This has happened before on airplanes with engines at the rear and it has caused engine damage.

The RAM sensor usually does not have anything to do with the engines. I am not familiar with the MD82 MEL but likely it would be a "GO" item. The engines have their own sensors as you know.

sevenstrokeroll;

The tires are immediately suspect in this model; not so much the 72'. I agree with you - it has happened before but without result except for loss of engine power. I am familiar with the DC9 accident at Toronto in June, 1978 in which an overrun resulted from a rejected takeoff right at V1 - the right tire shed the re-cap, (it remained inflated), caused the engine to falter and also put the right gear unsafe light on (tore out the switch & shorted the warning). The aircraft overran into the same gulley Air France 258 overran into but unlike AF, the '9 didn't burn, thankfully - it was at MGTOW, 108,000lbs.

wileydog2:

You can actually perform a V1 cut and NEVER use ailerons and keep the wings level and the nose going straight.
Good explanation.

In fact, that's how it was taught in the DC9 sim, esp. for someone who was having a bit of trouble keeping his/her hands off the control wheel and using a lot of aileron, which one never, ever should do for the reasons you give. At rotation, with the 15deg or so attitude established, the engine would be cut and the candidate would have to put his/her hands down beside them and control yaw using rudder alone. It was a great teaching technique and an even better confidence builder. Works for all aircraft, even the 'bus ;-)

PJ2

BYALPHAINDIA 21st Aug 2008 02:01

What will happen now at Spanair??

Will they carry on immediately or suspend all services.

Or will it depend on the SAS Group's decision.

What will happen to tomorrows flights??

BYALPHAINDIA 21st Aug 2008 02:34

Reports also say that the 2 pilots in the Accident, Were supposed to go on strike an hour before.:confused:

B747-800 21st Aug 2008 02:38


Reports also say that the 2 pilots in the Accident, Were supposed to go on strike an hour before.
Press, unconfirmed reports and or simple BS!

BYALPHAINDIA 21st Aug 2008 02:43

Yee I thought that was a bit of a coincidence.

Airbubba 21st Aug 2008 02:51

Yep, from some unreliable tabloid called The Times:


From The Times

August 21, 2008

Spanair pilots threatened strike an hour before crash

Carl Mortished, World Business Editor

Pilots at Spanair had threatened to go on strike only an hour before yesterday’s crash.

Threatened with job cuts, they had accused the carrier – which has run up large losses for its parent, the Scandinavian airline SAS – of “organised chaos” and failing to have a proper business plan...

Spanair pilots threatened strike an hour before crash - Times Online

wileydog3 21st Aug 2008 02:51


Reports also say that the 2 pilots in the Accident, Were supposed to go on strike an hour before
Completely irrelevant to the discussion.

ExSp33db1rd 21st Aug 2008 03:43

Assymetric thrust.

Would an assymetric thrust reverser on engines so close to the normal thrust line, cause such a swing ? Dunno, but it isn't like being an outboard engine on a 747.

wileydog3 21st Aug 2008 03:48


Would an assymetric thrust reverser on engines so close to the normal thrust line, cause such a swing ? Dunno, but it isn't like being an outboard engine on a 747.
Look at a Learjet. Engines look very close to centerline, right? When I flew and instructed on the early Learjets including the 23, the advice was to go all the way to the stops with the rudder and just possibly you could reduce the input slightly. Anything less than FULL rudder was an invitation to more problems.

They may look like they are close but you will use a full leg of rudder on the -80 with an engine failure. As for the 747, look at the size of the vertical fin and the rudder.

dicksorchard 21st Aug 2008 03:53

Survivors
 
as a veteran SLF, would like to know where the survivors were sitting - instinctively would assume in the front as MD engines are in the back

Reuters 10.14pm tonight

Survivors were flung from the plane by the force of the impact and landed in a stream, saving them from more severe burns, Corral said.



desmotronic 21st Aug 2008 04:31

Media in Australia is reporting eye witnesses in the terminal saying 100 metres AGL was achieved after take off.

Trimbuster11 21st Aug 2008 04:51

Imagine...
 
:=:=:= Definately your imagination....!!

RatherBeFlying 21st Aug 2008 04:52

In the 1978 Toronto overrun accident, the runway is now 9697' and the a/c stopped at the bottom of the ravine with a good portion on the slope as did AF358. I had a good look at both hulls.

El Mundo's diagram shows 4.35 km from the end of the runway to the debris which is about 14,300' which leads me to suspect the a/c was in the air for a short distance.

bubbers44 21st Aug 2008 04:54

reports were the right thrust reverser was out so don't think they were trying to continue the take off.

PJ2 21st Aug 2008 05:26

RatherBeFlying;

In the 1978 Toronto overrun accident, the runway is now 9697' and the a/c stopped at the bottom of the ravine with a good portion on the slope as did AF358.
A minor correction if I may - aside from there being only one parallel runway on the south, (there are two on the south side and one on the north side now, and AF358 was on the south parallel of the two, the DC9 was on the original parallel which is now the north parallel of the two), in 1978 the ravine had a much sharper "cliff" edge to it. The aircraft left the grass surface at about 54kts, "flew" over the cliff edge and pancaked, breaking the fuselage in two places. The wings remained intact. Two passengers died, one who was not wearing his seatbelt. The ravine was later "filled in" so to speak, in the form of a sloped surface - still a deep ravine with a stream but not an abrupt cliff. The north parallel has the same overrun feature.

AF358 missed (short by about 30ft) the large cement pillars upon which the approach lights to 06R are mounted - so much for "frangible" towers...

http://img135.imageshack.us/img135/2245/af35820vd3.jpg

Trimbuster11 21st Aug 2008 05:42

Marciovp
 
It is known in official Boeing doc's as the DC9-82 ;)

25thID 21st Aug 2008 05:50

Strike Issue
 
I don't see how any strike issue could have anything to do with this. Such speculation is pure absurdity and I am surprised at such statements on this forum anyway.

Sleeping Freight Dog 21st Aug 2008 05:57

Look at this photo of the tailplane, to me it appears there is damage
to the forward leading edge while the opposite appears to be less so...
Plane Crash in Madrid Leaves 153 Dead

Obviously it was torn off in the impact. It appears to be facing the
opposite way it would be on the aircraft..

PJ2 21st Aug 2008 06:41


Look at this photo of the tailplane, to me it appears there is damageto the forward leading edge while the opposite appears to be less so...
Plane Crash in Madrid Leaves 153 Dead

Obviously it was torn off in the impact. It appears to be facing the
opposite way it would be on the aircraft..
Sorry, were you thinking of this kind of damage being a hint as to cause? Usually this kind of damage occurs during the break-up sequence and would be less "tell-tale" than, say, a collision sequence or in-flight break-up. Your second comment is more important because it relates to the question of why they're cleaning up the mess so early and quickly. Mapping wreckage as it lay is usually important to an investigation for many things including ruling out some causes such as pre-impact breakup. That's why post #156 should be set aside - the reversers may be planted but we can't assume that that is an indication that one or both were deployed - physical markings as well as the recorders need to be examined for such conclusions. The engines and the main gear tires are obviously key targets for initial investigation as will flight crew history and training records. Though I think human factors is a rich area of investigation, I agree with those posters who dismiss the industrial side of this.

Nickctaylor 21st Aug 2008 06:45

I think the word you are looking for is "taste" not censored.

I have two questions. Early reports said the fire brigade could not get to the site quickly because the crash set the dry grass on fire. Surely this needs sorting IF true. As a layman I thought the idea of the fast response tenders was they could get to the site and try and keep the blazing side under control while escape was out the other.
Secondly what is the history of rear engined crashes like this compared with under wing engined aircraft. In a crash of this sort of level would the engines being right next to the fuselage be worse with fire breaking out?


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