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mrspog
25th Feb 2008, 17:30
Apparently a number of passenger flights were escorted over the Alps by military jets last week. Can anyone tell me why this was the case?
:confused:

LurkerBelow
25th Feb 2008, 23:17
Perhaps they were lost and lonely and needed someone to snuggle up to.:rolleyes:

BYALPHAINDIA
25th Feb 2008, 23:23
How do you know this:oh:

overstress
26th Feb 2008, 00:46
Because they can?

Perhaps someone looked out the window and saw a fighter jet. So what?

jetopa
26th Feb 2008, 07:57
I don't know whether this has anything to do with this: in early Dec. 2007 we entered French airspace close to Lyon without having given a handover by Swiss Control. After a few unsuccessful attempts to call them on both the previously assigned freq. and on Guard (only one US-aircraft replied, negative ground station...), a target was approaching us from behind while at FL430.

As it came closer, a TCAS-RA was triggered which commanded a descent in excess of 2,000 fpm until reaching FL378 (!). We climbed to FL380 and again tried to call anybody and set A7600. We managed to find a freq. of Marseille Control in the enroute chart who then made us aware of 2 fighter jets that have been sent after us for identification. We could identify 2 targets close by and behind us on the TCAS display - now finally without altitude readout... We never acquired them visually.

What a stunt! French ATC requested a written explanation after we had reached our destination and I filed a report with my national authorities, but haven't heard anything so far.

Does anybody know whether this is considered as being 'normal'?

AltFlaps
26th Feb 2008, 08:08
There have been stories for some time about French intercepts pulling similar manoeuvres ...

" ...they sneak up behind you above/below your tail (at VERY close range) and when cleared for the intercept of their discreet frequency, they turn on TCAS with mode C. This instantly causes the aircraft TCAS to command a climb/descent. The idea is that if the crew is in control, they will respond to the TCAS - if not ..." :ooh:

I can see the logic ... but the French really love to showboat !

Right Way Up
26th Feb 2008, 08:15
Maybe the French have the right to showboat once their ATC learn how to respond to inital calls within the first two attempts! :hmm:

I cannot think of too many other countries who have the same problem.

ComJam
26th Feb 2008, 10:33
AltFlaps, where does your information on the Mode C stuff come from? As far as i'm aware, the FAF Mirage does not have TCAS fitted.

Any of this stuff that i've been involved with has the interceptor(s) squawking Mode A with the C turned off, or with the Mode 3 in standby, so as to NOT set off the TCAS of the "target" aircraft. Standard intercept procedure's being followed including the positioning of one aircraft on the forward lefthand side of the "target" to enable the pilot to check the cockpit out and give the standard signals etc. All of which would be made a lot harder if the "target" is constantly in a TCAS decent! :\

frozen man
26th Feb 2008, 10:53
Won't be the first or last time the French have a bit if live intercept practise, my previous company managed a few a month a couple of years back.:)

old fart
26th Feb 2008, 11:19
http://i253.photobucket.com/albums/hh48/Griff747/InterceptOverCanarias.jpg

This guy came to have a look at us, northbound from ASI.
Cheers
OF

BenThere
26th Feb 2008, 12:19
I used to fly military VIPs in a Lear out of Napoli.

Occassionally we flew over Switzerland and were usually asked by Swiss ATC if we minded if Swiss fighters flew practice intercepts on us. Maybe this instance is similar.

AltFlaps
26th Feb 2008, 15:58
My info comes from a colleague who was intercepted last year - was discussed in great detail at annual security refresher.

I also flew with a chap who was intercepted about 4 years ago - all very smiley and wavy ..etc..
When the French pilot went to break off (he was forward of the left wing tip), he rolled over the top and front of the Boeing and then pulled (inverted) to descend rapidly on teh right hand side of the aircraft. My pal got very upset and filed all sorts of paperwork - said it got VERY close. :mad:

M609
26th Feb 2008, 16:50
The French are not the only ones, Russian Mig-31s have used BA and Virgin aircraft on polar routes from Narita to "hide behind" in attempts sneak up on the Norwegian coast.

It did not work, and ATC duly informed the crews on the BA/Virgin flights when friendly F-16s arrived to chase the "bandits" away. :}

chiglet
26th Feb 2008, 16:59
As far as i'm aware, the FAF Mirage does not have TCAS fitted.


AFAIK the transponder in the fighter is read my the Civil TCAS....Just like it would with a C172...I could be wrong tho'
watpiktch

GearDown&Locked
26th Feb 2008, 17:13
Hmm, if they really want to sneak up and intercept without "introducing" themselves on the target TCAS, they would probably turn their transponder off, wouldn't they. Only ATC can see them, as unmarked blips anyway.

Then again, if they're from the stealth type...

mrspog
26th Feb 2008, 17:48
Thanks for your replies.
It was in fact my boss who asked me (a humble PPL). He saw them while skiing last week. I thought I would ask the big boys.

ppppilot
26th Feb 2008, 18:24
There is a french military maneuver area south of Marseille, over the Mediterranean sea. I think there is a base at Toulon (famous ndb impossible to locate when the controllers directs you there). French army uses to practice there. Flying to STU ¿? after passing over TLS, long time ago, the controller told me that two fighters were practicing and they were going to escort me for a while. I have seen that many times. Army pilots love to use civil aircraft as virtual targets.

FougaMagister
26th Feb 2008, 19:18
Funny that! The first post on this thread only mentioned "over the Alps"... In other words, who is to say that the interceptors were French, and not Swiss, Italian or Austrian (or even American, based in Northern Italy)? The photo actually shows a Gando, Gran Canaria-based Spanish F/A-18. So the Spanish are at it too.

So why the scare stories about the French AF? For all their antics, these guys are up there for everyone's safety. Get used to it.

ComJam
26th Feb 2008, 20:36
Chiglet, yeah exactly. The other poster mentioned turning on "the TCAS with mode C", i was pointing out the interceptor involved would have an ATC Mode 3 transponder but no TCAS.

As for ATC being able to see them, yes they would be able to, i guess the civil controllers would see the Primary return, the Mil controllers (Fighter controllers or GCI) will be able to monitor the aircraft through it's other Transponder Modes.

Here's one of mine:

http://img.photobucket.com/albums/v667/Falcon20/DSC00246.jpg

brownbaron
26th Feb 2008, 20:53
Had this happen a few years ago, with a couple of froggy jets, formating on us.
You could almost see the look of terror on the military guys face when he stalled , as he was to busy waving to notice us powering back slowly:)

747-436
26th Feb 2008, 20:57
I heard a few years ago that the French had said they would send up military aircraft to 'escort' passenger aircraft for practice. Some airlines complained to the French that this could affect safety, the French said it is their Airspace and they will do what they like within it!!

Double Zero
26th Feb 2008, 22:52
Methinks too much information is being given away here for the bad guys - get it?!

Clandestino
26th Feb 2008, 22:52
Austrian tigers escorting JAT 737 (http://www.myaviation.net/search/photo_search.php?id=01281451&size=large)

Austrian F-5s and even SAAB 105s have "CALL 121.5 MHz" written on their droptanks.

French chasseurs do perform practice interceptions of the civil airliners but they usually ask for the permission of the crew involved. And they certainly do not turn on their transponders to provoke TCAS RA. Au contraire, they turn their C-mode compatibile transponders off as they approach their "target" and intercepted crew gets the timely warning from the ATC that TCAS targets will suddenly disappear.

ComJam
28th Feb 2008, 19:43
Double Zero, everything posted here is available in the public domain. Intercept procedures etc etc...