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Clearence From Shannon.....  
User currently offlineSUDDEN From Sweden, joined Jul 2001, 4130 posts, RR: 6
Posted (11 years 12 months 1 day 5 hours ago) and read 1722 times:

For a oceanic crossing from europe to US, for ex., the aircraft needs to get clearence from Shannon to be able to proceed.
What exactly does this clearence content?

Any info is much appreciated.

Sudden


When in doubt, flat out!
5 replies: All unread, jump to last
 
User currently offlineSUDDEN From Sweden, joined Jul 2001, 4130 posts, RR: 6
Reply 1, posted (11 years 12 months 1 day 5 hours ago) and read 1694 times:

Also.......

Can a aicraft equiped with ACARS, recieve the clearence that way?

Sudden



When in doubt, flat out!
User currently offlineJetpilot500 From United States of America, joined Nov 2000, 78 posts, RR: 0
Reply 2, posted (11 years 12 months 1 day 4 hours ago) and read 1698 times:

Since there is no radar (so they say) watching you over the North Atlantic, you are given an oceanic clearance. This clearance will provide you with verification of routing, or updated routing. In addition, you will be assigned an altitude, speed and a HF radio frequency for communications over the water. Then you tell them your estimated time to the first waypoint. Basically, since there is no radar, this is what is done to keep you separated while over the water. When departing Europe for North America, you get this clearance from "Shanwick" which I belive is in Shannon, but this is what you call them. You will communicate with them for the first half of your oceanic journey. The next half will be with Gander. Hope this helps.

Also, it is possible for some aircraft to obtain this clearance with ACARS or AFIS.

JetPilot500


User currently offlineSUDDEN From Sweden, joined Jul 2001, 4130 posts, RR: 6
Reply 3, posted (11 years 12 months 1 day 4 hours ago) and read 1676 times:

Thanks for your detailed reply JetPilot500!
Have a very plesent weekend!

Regards.
Sudden



When in doubt, flat out!
User currently offlineRick767 From United Kingdom, joined Jan 2000, 2662 posts, RR: 51
Reply 4, posted (11 years 12 months 1 day 2 hours ago) and read 1674 times:

We recieve an oceanic crossing clearance from Shanwick Oceanic Clearance Delivery but the eastern side of the North Atlantic (up to 30 West) is under the juristiction of the Shannon Oceanic Control Centre. These are not the same control entities.

The clearance contains the Aircraft Identification, the NAT Track the flight is cleared on, the mach number and the flight level to be maintained from the first reporting point.

So an example dialogue between an aircraft and Shanwick might be:

"Shanwick good morning Britannia Five Two Nine Bravo"

"Britannia Five Two Nine Bravo Shanwick Go Ahead"

"Britannia Five Two Nine Bravo is estimating 56 North 10 West at 1256, requesting NAT Track Charlie at Flight Level 340, maximum flight level 360"

"Britannia Five Two Nine Bravo, standby"

---(usually a five minute gap!)---

"Britannia Five Two Nine Bravo your clearance"

"Five Two Nine Bravo go ahead"

"Britannia Five Two Nine Bravo is cleared to Orlando via track charlie. From 56 North 10 West maintain Flight level 350 mach decimal 80."

Then we acknowledge and continue the flight.

Also at some point we have to give them a NAT track message ident to ensure that the NAT track message (printout) we picked up at the crew room before we set off is valid and correct.

Also important to note that the Flying Pilot will take the radios whilst the Non-Flying pilot obtains the crossing clearance, as you must remain in radio contact with the controlling authority (normally London, Shannon or Scottish) whilst picking up your clearance from Shanwick.

Hope this was of some interest.



I used to love the smell of Jet-A in the morning...
User currently offlineSUDDEN From Sweden, joined Jul 2001, 4130 posts, RR: 6
Reply 5, posted (11 years 12 months 1 day 2 hours ago) and read 1661 times:

It sure was!!!
Thanks alot.



When in doubt, flat out!
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