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Sector Glossary

This document explains various definitions used throughout the London and Scottish FIR sector procedures.

Airfield Groups

In order to simplify notation for standing agreements airports have been grouped. They are as follows:

Basle	LFGB, LFQM, LFSB
Belfast	EGAA, EGAC, EGAD, EGAE, EGAL
Bordeaux	LFBC, LFBD, LFBE, LFBG, LFBS, LFBX, LFCH, LFCY, LFDI
Brize	EGBJ, EGDL, EGVA, EGVN
Brussels	EBAW, EBBR, EGCI, EGCV, EBMB
Chambery	LFHM, LFHU, LFKA, LFKX, LFLB, LFLE, LFLJ, LFLP
Dublin	EIDW, EIME, EIWT
Dutch	EHGG, EHHO, EHLW, EHTE, EHTW
East Anglian	EGSH, EGUL, EGUN, EGYC, EGYM
Essex	EGSS, EGGW, EGSC
Farnborough	EGTD, EGHL, EGLF, EGLK, EGTF, EGVO
German	EDDG, EDDL, EDDK, EDLA, EDLE, EDLI, EDLN, EDLP, EDLS, EDLV, EDLW, EDVK, ETNG, ETNN, ETUO
HSD	EHBD, EHEH, EHGR, EHMZ, EHRD, EHSE, EHVK, EHWO
Jersey	EGJA, EGJB, EGJJ
LFRR FIR	LFES, LFJR, LFOU, LFOV, LFR*
Lille	LFAC, LFAT, LFAV, LFQI, LFQQ, LFQT
LTMA	EGLL, EGLC, EGKK, EGGW, EGSS, EGSC, EGWU, EGMC, EGKB, EGTO
Lyon	LFHJ, LFHS, LFHV, LFHW, LFKL, LFKY, LFLG, LFLL, LFLM, LFLS, LFLU, LFLY, LFMH, LFXA
Midlands	EGBB, EGBE, EGNX
MTMA	EGCC, EGCD, EGGP, EGNR
Paris	LFOB, LFPB, LFPC, LFPG, LFPN, LFPO, LFPT, LFPV
St Yan	LFGM, LFGN, LFHY, LFLN, LFLO, LFQF
ScTMA	EGPF, EGPH, EGPK, EGPN, EGQL, EGPG
Severn	EGDX, EGGD, EGFF, EGFH, EGTG
Solent	EGHI, EGHH
Strasbourg	LFST, LFGC, LFQP, EDSB, EDSK, EDSW, EDTB, EDTL, EDTO
Thames	EGMC, EGLC, EGKB, EGTO

Altitude notation

Altitude restrictions and agreements are noted as follows:

A05	Specified altitude only. QNH of the arrival field should be used.
200	Specified level only. Lower levels available if co-ordinated.
MSL	Minimum Stack Level
	Not above specified level.
	Not below specified level.

Terms and abbreviations

Bandboxing
Combining two or more sectors into one position.

Designated sector
A sector listed in the table of contents with a unique identifier.

External agreement (in/out)
Standing agreements with international units. No co-ordination should be needed if traffic is offered at the levels and points specified but it is good practise to confirm that all agreements are valid when first connecting.

Internal agreement (in/out)
Standing agreements with other UK sectors. No co-ordination is needed if traffic is offered at the levels and points specified.

MSL (Minimum Stack Level)
The lowest whole flight level which provides a minimum of 1000ft separation above the applicable transition altitude. MSL in the London TMA is based on the Heathrow QNH. MSL in the Manchester TMA is based on the Manchester QNH. MSL in the Scottish TMA is based on the Glasgow QNH.

London & Scottish TMA. QNH 1013+, MSL = FL70. QNH 1012-978, MSL = FL80. QNH 977-943, MSL = FL90.

Manchester TMA. QNH 1013+, MSL = FL60. QNH 1012-978, MSL = FL70. QNH 977-943, MSL = FL80.

Position
Controlling station, can be one or more sectors if bandboxed.

LACC
London Area Control Centre (IvAc: EGTT)

LTCC
London Terminal Control Centre (IvAc: EGTL)

ScACC
Scottish Area Control Centre (IvAc: EGPX)

Intention Codes