temporary instruction 2025-04-26 - [Enroute] LAC Clacton - Splitting Procedures

[VATSIM UK Operations]

Valid 26 April 2025 for the duration of the Cross the Pond roster

A temporary arrangement is permitted to split LAC Clacton during the Cross the Pond. Clacton North and Clacton South are permitted to be opened with or without AC Clacton or Central for the duration of CTP.

This TI must be read in conjunction with the Temporary Instruction 2025-04-26 - [Enroute] TC East - Splitting Procedures as the TC East airspace is also divided when the upper Clacton split is used.

Any errors in procedures should be reported to the Operations department via the Helpdesk or Discord. The diagrams are slightly outdated as they do not reflect the changes at the interface with North Sea (EFMIH and AMFEP).

 

Available Position(s)

Clacton North - LON_EN_CTR (Relief: LON_EN__CTR)

Frequency: 133.925 MHz
RTF callsign: London Control
Coordination callsign: Sector 12
Top-down responsibility for: TC REDFA (north half of TC East)

Clacton North (Sector 12) handles almost exclusively Eastbound traffic, leaving the FIR at SOMVA, REDFA and entering North Sea at EFMIH. Some Westbound traffic is handled in the form of Essex inbounds via AMFEP-MEGEL.

Clacton South - LON_ES_CTR (Relief: LON_ES__CTR)

Frequency: 128.150 MHz
RTF callsign: London Control
Coordination callsign: Sector 13
Top-down responsibility for: TC SABER (south half of TC East)

Clacton South (Sectors 13+14) handles Westbound traffic entering the FIR via the delegated areas and from North Sea at BARMI.

Note: Clacton South's responsibilities change depending on who else is online:

• LON_EN_CTR + LON_ES_CTR online, LON_ES_CTR is responsible for both Sector 13 and Sector 14.
• LON_C_CTR + LON_ES_CTR online, Clacton South is responsible for both Sector 13 and Sector 14. <- Note: This is the expected configuration for CTP.
• LON_E_CTR + LON_ES_CTR online, LON_ES_CTR is responsible for Sector 13 only.

 

Agreed Levels

A Clacton Split Agreed Levels Diagram is available at the link below.

OUTDATED 🗺️LAC Clacton (S12+S13+S14) Agreed Levels Diagram

 

Coordination with Adjacent Sectors & Units

The following sectors should be informed when Clacton splits are opened:

• AC North Sea
• AC Daventry
• AC Dover and LUS
• TC East
• Amsterdam/MUAC DELTA
• Brussels/MUAC KOKSY

All neighbouring units should be aware of these positions and their functions.

Traffic inbound to LTMA via BARMI will be transferred from AC North to Sector 13 / 14, and transits Sector 12 at the agreed level at BARMI (i.e. FL300 for EGLL and FL260 for EGKK). Traffic is not RFD/RFT in Sector 12 without coordination. 

Traffic inbound to EGLL below FL290 will be transferred to Sector 14 in the delegated area. If Sector 13 and 14 are split, this traffic needs to be descended relatively early to avoid entering Sector 13 enroute to LOGAN. TC East should receive this traffic at FL240, with traffic from Sector 13 at FL250.

 

Figure 1 - Sector 12 Area of Responsibility

Figure 2 - Sectors 13+14 Combined Area of Responsibility

Figure 3 - Sector 13 Area of Responsibility

Figure 4 - Sector 14 Area of Responsibility

This procedure does not alter the staffing permissions as defined in the UK Division Policy or GCAP.