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Kliro 11-05-2005 17:16

Unidentified plane violates no fly zone
 
http://www.foxnews.com/

Paul K 11-05-2005 17:22

Re: Unidentified plane violates no fly zone
 
That would be the White House no fly zone ;) Not a lot of info at that link yet but no doubt it will fill up with plenty of panic ridden guesswork soon lol

Kliro 11-05-2005 17:23

Re: Unidentified plane violates no fly zone
 
heh no doubt, just heard off someone else it was a cessna, whatever that is, but its meant to be too small to do anything really.

No doubt it'll be anouther story of how the mighty americans defeated the cessna.

Paul K 11-05-2005 17:24

Re: Unidentified plane violates no fly zone
 
http://www.foxnews.com/story/0,2933,156217,00.html told you they would panic :erm:

TheBlueRaja 11-05-2005 17:26

Re: Unidentified plane violates no fly zone
 
All clear given according to that link.

Stuart 11-05-2005 17:31

Re: Unidentified plane violates no fly zone
 
Quote:

Originally Posted by Kliro
heh no doubt, just heard off someone else it was a cessna, whatever that is, but its meant to be too small to do anything really.

No doubt it'll be anouther story of how the mighty americans defeated the cessna.

A Cessna is a light aircraft, owned by rich people, or used by companies to fly executives around without using commercial airlines. A cessna will have less than 20 passenger sets (usually around 10).

http://www.cessna.com/

BBKing 11-05-2005 18:19

Re: Unidentified plane violates no fly zone
 
Cessna produce a wide range of craft, from two seat trainers to reasonable sized (10 seats or so) executive jets like the Citation. What is referred to by the media as a 'Cessna' is usually a 172 or 182, which is a four seat single engine light aircraft. Basically the Ford Focus of the skies - there have been over 37000 172s and 20000+ 182s built.

Pictures of models of them.
http://www.aviation-central.com/priv...anes/apb00.htm

In 1994 a Cessna 150 crashed on the White House lawn.
In 1987 Mathias Rust flew a 172 all the way to Moscow, landing in Red Square.

Gareth 11-05-2005 21:33

Re: Unidentified plane violates no fly zone
 
Bwahahaha, a Cessna...?!? As BBKing points out, it's most likely gonna be a 172 or a 182. The only damage that could cause is maybe it'd leave a scratch on the window as it bounced off it (leaving the window intact).

I liked the comment about it being escorted out of the no-fly zone by 2 F-16s. I bet they had trouble constantly flying that slowly! :D

paulyoung666 11-05-2005 21:35

Re: Unidentified plane violates no fly zone
 
who got lost then :dozey: , mind you i reckon the pilot will have been sh!!tting themselves when confronted by f16's and blackhawks :disturbd: :D :D

BBKing 11-05-2005 23:24

Re: Unidentified plane violates no fly zone
 
Quote:

I liked the comment about it being escorted out of the no-fly zone by 2 F-16s. I bet they had trouble constantly flying that slowly
On full throttle it'll do about 140mph - below the F-16's take-off speed of 140 knots or so. I should think they were flying round it, like hyperactive terriers round an old granny.

paulyoung666 11-05-2005 23:27

Re: Unidentified plane violates no fly zone
 
Quote:

Originally Posted by BBKing
On full throttle it'll do about 140mph - below the F-16's take-off speed of 140 knots or so. I should think they were flying round it, like hyperactive terriers round an old granny.

dont forget the blackhawk that can fly backwards faster than it could fly forwards ;) :D :D

BBKing 12-05-2005 07:40

Re: Unidentified plane violates no fly zone
 
Wasn't that the Austin Allegro?

Reading further, a guy in Denmark's got a page about being given an hour in an F-16 simulator and apparently on full throttle you can pull the nose up and waddle along on the edge at about 95 knots Love to see a picture of that.

http://www.jetpilot.dk/WarStories/F16_report.htm

Flubflow 12-05-2005 08:54

Re: Unidentified plane violates no fly zone
 
Quote:

Originally Posted by Gareth
Bwahahaha, a Cessna...?!? As BBKing points out, it's most likely gonna be a 172 or a 182. The only damage that could cause is maybe it'd leave a scratch on the window as it bounced off it (leaving the window intact).

The damage it could cause would rather depend on how much anthrax, explosives or radioactive dirty bombs etc it could have been carrying.

zoombini 12-05-2005 09:13

Re: Unidentified plane violates no fly zone
 
Just what I was going to say.

Do we have a no fly zone around downing street & parliament?

SMHarman 12-05-2005 09:24

Re: Unidentified plane violates no fly zone
 
No, but airspace over London at low level is restricted so if you have not filed you flight plan you would be in trouble, that and flying a single engine over London is I think unapproved as you have no get out of jail free plan in the event of engine failiure. We also fly straight over Westminster castle, stack jets over Canary Wharf etc.

Washington airport is incredibly close to the city, just over the river and the glide path is quite complex as it involves a couple of sharp turns to avoid overflying the whitehouse, pentagon, capitol building etc. If you deviate from the flight path they are over you like hawks (well more like F16s actually - hawks are not particularly well armed). I'll find the pictures I took at Christmas of how close the jets are to the major monuments.

Electrolyte01 12-05-2005 09:32

Re: Unidentified plane violates no fly zone
 
Quote:

Originally Posted by SMHarman
No, but airspace over London at low level is restricted so if you have not filed you flight plan you would be in trouble, that and flying a single engine over London is I think unapproved as you have no get out of jail free plan in the event of engine failiure.

Not all planes with 2 engines can stay in the air running on the one engine, such as the beechcraft baron. Even with just the pilot, if the one engine was the fail you won't be able to keep it in the air for long.

Gareth 12-05-2005 09:57

Re: Unidentified plane violates no fly zone
 
Quote:

Originally Posted by Flubflow
The damage it could cause would rather depend on how much anthrax, explosives or radioactive dirty bombs etc it could have been carrying.

I know... I was only joking. :rolleyes: If you wanna get serious, I wrote my university dissertation on airline security, as I was working for Air France at the time and had access-all-areas at Orly airport. But I much prefer being lighthearted.

Quote:

Originally Posted by zoombini
Just what I was going to say.

See above.

SMHarman 12-05-2005 09:57

Re: Unidentified plane violates no fly zone
 
Useful article from the CAA

http://www.caa.co.uk/docs/7/DAP_EIS04.pdf

Quote:

In air traffic control
terms, distances of 30 miles and less are comparatively
small and take only a few minutes flying time. Typically,
aircraft inbound to the UKâ₠¬ÃƒÂ¢Ã¢â‚¬Å¾Ã‚¢s major airports are routinely
required to intercept the Instrument Landing System (ILS)
facility, an aircraft-interpreted aid comprising centre-line
and glide-slope elements radiating from the touchdown
point and aligned with the runway concerned, from a
height of approximately 2000 - 2500 feet. During the night
the joining level is often set higher. The fact that aircraft
need to be established on the ILS centre line at
approximately 10 miles from touchdown will explain why
many areas of the southeast are over-flown at relatively
low level. If the aircraft were significantly higher they
would be unable to achieve a safe intercept of the ILS
glide-slope. The need for aircraft to over-fly built up areas
at all has also been questioned. Unfortunately, the
west/east alignment of Heathrow Airportââ‚à ‚¬Ã¢â€žÂ¢s main runways
and the location of the airport in relation to London mean
that aircraft on final approach to the westerly runways will
inevitably fly over congested areas of population en-route
to the ILS and when established on the facility.

BBKing 12-05-2005 10:41

Re: Unidentified plane violates no fly zone
 
Living under the Heathrow approach is a fact of life for thousands, including me.

It's worth checking the photographs of what damage the Cessna did in 1994 - it hit the lawn and bounced into the White House.

Mind you, the plane that hit the Pirelli Building in Milan did a fair bit more damage. Modern space frame buildings are more susceptible than older masonry structures like the White House and Capitol - it would indeed bounce off either of those.

You can fill a Cessna 172 with about 400kg of stuff, including pilot and fuel. That's not much, although any terrorists out there might note that it's enough for a reasonable sized conventional bomb (the 2001 Ealing bomb contained 40kg of explosive, but wasn't fatal to people even standing five metres away).

Dirty bombs, anthrax and such things are far more frightening in newspapers than in reality. Any terrorist worth his salt knows that releasing a lot of energy in a short space of time is the best way to get noticed.

SMHarman 12-05-2005 12:43

Re: Unidentified plane violates no fly zone
 
Quote:

Originally Posted by BBKing
You can fill a Cessna 172 with about 400kg of stuff, including pilot and fuel.

So Pilot say 80kg - Fuel 40Kg payload at most 280kg

BBKing 12-05-2005 13:45

Re: Unidentified plane violates no fly zone
 
American pilot - 160kg :P

What sort of volume is 280kg of explosive? Cessnas aren't that roomy inside.

[I do hope MI5 aren't reading the next set of Google searches I'm about to do]

C-4 plastic explosive - 1.60 g/cc

1 cc is a cube 1cm on each side. 1000cm on each side is a cubic metre or 100x100x100 cc=10^6 cc

So 1m^3 of C-4 weighs 1 600 000 grams or 1 600 kg or 1.6 tonnes. This would be

a) Quite expensive (£24,00 0 or so)
b) Devastating
c) Heavier than the entire aircraft

200kg would be 1/8 of a cubic metre of C-4, or a cube 50cm on each side. That would fit in a Cessna, I think, and it would have a chance of getting into the air.

200kg is officially (for quarrying/demolition) unsafe up to 500m away - not that it will kill you, but 500m is a safe distance for the hoi polloi to stand at.

200kg will blow a hole through seven feet of reinforced concrete, roughly, if placed directly in contact. Obviously it's hard to park a Cessna close enough to the building to get the full effect.

So in the worst case scenario a Cessna with as much high-grade explosive as it can carry having a really lucky hit would probably knock a hole in the wall of the White House or Capitol and make life rather unpleasant within 100-200 metres. So getting down into the bunkers seems quite a sensible precaution.

I'm not going to post any links. I can hear helicopters coming!


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