active 2025-03-20 - [Enroute] AC North Sea - OSEP 11

[VATSIM UK Operations]

Effective 20 March 2025

Applicable to: AC North Sea (AC Clacton and TC East controllers see here)

Introduction

Deployment 11 of NATS’ Operational Service Enhancement Project (OSEP) introduces more direct routings in North Sea and Clacton airspace to enable fuel and CO2 savings.

In North Sea airspace:

1. The westbound coordination point (COP) for EHAA FIR departures, KOLAG, is replaced by a new COP ENZEN to the south.
   
   
    
2. Southbound into Clacton, Essex Group inbounds will split off the N866 at KUBAX, onwards to AMFEP to the west of BARMI, exiting the sector at FL260 lvl AMFEP. The EGSS/SC and EGGW STARs are truncated from BARMI (2A and 1N) to MEGEL (1A and 1N).
    

   VATSIMism Pilots filed via old routes should be routed direct to MEGEL to join the MEGEL STARs and can be given a level restriction of FL260 lvl 15 miles before MEGEL.   If the pilot does not have the MEGEL arrival, they should be cleared via the equivalent, old BARMI arrival and given the same level restriction.

    

3. Northbound out of Clacton, a realignment of the East Anglian Military Training Area (EAMTA) enables the M604 to be moved west via new point EFMIH, which replaces LEDBO.

Original images courtesy of NATS - OSEP CLN Final ACP document v1.1
 

vMATS Procedure

Deleted text – red and strikethrough. New text in blue.
 

LAC 7 North LAG | North Sea
LAC 7.1 Area of Responsibility

UPDATED Figure LAC-26 – London AC North Sea Area of Responsibility

LAC 7.3.1.1 Standing Agreements - AC Clacton (excerpt)
From AC North Sea to AC Clacton

To	Agreement	Conditions
Essex Group	FL260 lvl AMFEP BARMI	(See Note)

Note: Wherever possible, AC North Sea shall endeavour to position EGGW (ZAGZO) arrivals to the west of EGSS/EGSC (ABBOT) arrivals.

LAC 7.3.3.1 Standing Agreements - Amsterdam West (FL245-) (excerpt)
From Amsterdam West to AC North Sea

From	Agreement	Conditions
EH**	All levels FL180 – FL240	Via ENZEN KOLAG. (See Note)

Note: Traffic is RFC to FL300 subject to known traffic and traffic to/from Scottish ACC. Further climb shall be coordinated with DELTA Sector (or Amsterdam ACC in their absence).

LAC 7.4.1 Coordination with Clacton
LAC 7.4.1.1    Eastbound LTMA Traffic via EFMIH LEDBO

All LTMA Group departures via EFMIH LEDBO (M604) transferred on their own navigation or on a heading are released for turns, subject to known traffic. If coordinated at a level below their RFL, this traffic is also released for climb.

LAC 7.4.3.3.2 Amsterdam ACC - Transfer of Control and Communication - Traffic Entering London

Route	Coordination Point	Transfer of Control	Transfer of Communications
L602	MIMVA	EMLON	At or before EMLON
L60	ENZEN KOLAG	SOPEK	At or before SOPEK

Annex A - Standard Instrument Arrivals (STARs)
A.12 London Luton (EGGW)

Designator	Arrival Via	Route	Remarks
BARMI 1N	P7	BARMI – MEGEL – DITOB – WIQID – MUCTE – OFJES – UDDIZ – COCCU – JUMZI – ZAGZO
MEGEL 1N	Z150	MEGEL – DITOB – WIQID – MUCTE – OFJES – UDDIZ – COCCU – JUMZI – ZAGZO

A.13 London Stansted (EGSS), Cambridge (EGSC)

Designator	Arrival Via	Route	Remarks
BARMI 2A	P7	BARMI – MEGEL – DITOB – LAPRA – ABBOT
MEGEL 1A	Z150	MEGEL – DITOB – LAPRA – ABBOT

 

Documentation Status

The London (EGTT) vMATS Part 2 and Agreed Levels Diagrams will be amended to coincide with this change. Revised versions will be available at docs.vatsim.uk/Enroute from the effective date.