Oceanic Tracks

ATSIX

62/20

62/30

61/40

60/50

URTAK

SUNOT

58/20

58/30

58/40

57/50

HOIST

BILTO

5730/20

5730/30

5730/40

5630/50

IRLOK

SUNOT

58/20

59/30

59/40

58/50

DORYY

BILTO

5730/20

5830/30

5830/40

5730/50

ENNSO

RESNO

56/20

56/30

56/40

55/50

LOMSI

RESNO

56/20

57/30

57/40

56/50

JANJO

VENER

5530/20

5530/30

5530/40

5430/50

MELDI

VENER

5530/20

5630/30

5630/40

5530/50

KODIK

DOGAL

55/20

55/30

55/40

54/50

NEEKO

DOGAL

55/20

56/30

56/40

55/50

LOMSI

DINIM

51/20

52/30

53/40

52/50

TUDEP

ELSIR

50/50

52/40

53/30

54/20

DOGAL

BEXET

JOOPY

49/50

51/40

52/30

53/20

MALOT

GISTI

JOOPY

49/50

51/40

53/30

54/20

DOGAL

BEXET

NICSO

48/50

50/40

51/30

52/20

LIMRI

XETBO

NICSO

48/50

50/40

52/30

53/20

MALOT

GISTI

PORTI

47/50

49/40

50/30

51/20

DINIM

ELSOX

PORTI

47/50

49/40

51/30

52/20

LIMRI

XETBO

SUPRY

46/50

48/40

49/30

50/20

SOMAX

ATSUR

SUPRY

46/50

48/40

50/30

51/20

DINIM

ELSOX

RAFIN

45/50

47/40

48/30

49/20

BEDRA

NASBA

RAFIN

45/50

47/40

49/30

50/20

SOMAX

ATSUR

DOVEY

42/60

44/50

46/40

47/30

48/20

48/15

OMOKO

GUNSO

JOBOC

41/60

43/50

45/40

46/30

47/20

47/15

ETIKI

REGHI

DOVEY

42/60

44/50

46/40

48/30

49/20

BEDRA

NASBA

SOORY

43/50

45/40

47/30

48/20

48/15

OMOKO

GUNSO

SOORY

42/50

44/40

45/30

46/20

46/15

SEPAL

LAPEX

+−

Leaflet

North Atlantic Tracks (NATs) are daily high altitude transatlantic routes between western Europe and the eastern coast of North-America, which provide consistent separation between aircraft. Westward tracks are named incrementally from the beginning of the alphabet (A,B,C...), with the northernmost tracks named first. Similarly, eastward tracks are named incrementally from the end of the alphabet (Z,Y,X...), with the southernmost tracks named first. Daily updates for each direction allow for routing around weather systems and tracking of favourable tailwinds to improve efficiency. The table below shows the current valid NATs and the upcoming published NATs, along with the permissible flight levels in each direction.

Track	Valid From	Valid To	Route	East Levels	West Levels
A	20 May 1130 UTC	20 May 1900 UTC	ATSIX 62/20 62/30 61/40 60/50 URTAK		350 360 370
A	19 May 1130 UTC	19 May 1900 UTC	SUNOT 58/20 58/30 58/40 57/50 HOIST		340 350 360 370 380 390
B	19 May 1130 UTC	19 May 1900 UTC	BILTO 5730/20 5730/30 5730/40 5630/50 IRLOK		350 360 370 380 390
B	20 May 1130 UTC	20 May 1900 UTC	SUNOT 58/20 59/30 59/40 58/50 DORYY		340 350 360 370 380 390
C	20 May 1130 UTC	20 May 1900 UTC	BILTO 5730/20 5830/30 5830/40 5730/50 ENNSO		350 360 370 380 390
E	19 May 1130 UTC	19 May 1900 UTC	RESNO 56/20 56/30 56/40 55/50 LOMSI		340 350 360 370 380 390
F	20 May 1130 UTC	20 May 1900 UTC	RESNO 56/20 57/30 57/40 56/50 JANJO		340 350 360 370 380 390
F	19 May 1130 UTC	19 May 1900 UTC	VENER 5530/20 5530/30 5530/40 5430/50 MELDI		350 360 370 380 390
G	20 May 1130 UTC	20 May 1900 UTC	VENER 5530/20 5630/30 5630/40 5530/50 KODIK		350 360 370 380 390
G	19 May 1130 UTC	19 May 1900 UTC	DOGAL 55/20 55/30 55/40 54/50 NEEKO		340 350 360 370 380 390
H	20 May 1130 UTC	20 May 1900 UTC	DOGAL 55/20 56/30 56/40 55/50 LOMSI		340 350 360 370 380 390
J	20 May 1130 UTC	20 May 1900 UTC	DINIM 51/20 52/30 53/40 52/50 TUDEP		340 350 360 370 380 390
R	19 May 0100 UTC	19 May 0800 UTC	ELSIR 50/50 52/40 53/30 54/20 DOGAL BEXET	340 350 360 370 380 390 400
S	19 May 0100 UTC	19 May 0800 UTC	JOOPY 49/50 51/40 52/30 53/20 MALOT GISTI	340 350 360 370 380 390 400
T	20 May 0100 UTC	20 May 0800 UTC	JOOPY 49/50 51/40 53/30 54/20 DOGAL BEXET	340 350 360 370 380 390 400
T	19 May 0100 UTC	19 May 0800 UTC	NICSO 48/50 50/40 51/30 52/20 LIMRI XETBO	340 350 360 370 380 390 400
U	20 May 0100 UTC	20 May 0800 UTC	NICSO 48/50 50/40 52/30 53/20 MALOT GISTI	340 350 360 370 380 390 400
U	19 May 0100 UTC	19 May 0800 UTC	PORTI 47/50 49/40 50/30 51/20 DINIM ELSOX	340 350 360 370 380 390 400
V	20 May 0100 UTC	20 May 0800 UTC	PORTI 47/50 49/40 51/30 52/20 LIMRI XETBO	340 350 360 370 380 390 400
V	19 May 0100 UTC	19 May 0800 UTC	SUPRY 46/50 48/40 49/30 50/20 SOMAX ATSUR	340 350 360 370 380 390 400
W	20 May 0100 UTC	20 May 0800 UTC	SUPRY 46/50 48/40 50/30 51/20 DINIM ELSOX	340 350 360 370 380 390 400
W	19 May 0100 UTC	19 May 0800 UTC	RAFIN 45/50 47/40 48/30 49/20 BEDRA NASBA	350 360 380 390 400
X	20 May 0100 UTC	20 May 0800 UTC	RAFIN 45/50 47/40 49/30 50/20 SOMAX ATSUR	340 350 360 370 380 390 400
X	19 May 0100 UTC	19 May 0800 UTC	DOVEY 42/60 44/50 46/40 47/30 48/20 48/15 OMOKO GUNSO	350 360 380 390 400
Y	19 May 0100 UTC	19 May 0800 UTC	JOBOC 41/60 43/50 45/40 46/30 47/20 47/15 ETIKI REGHI	350 360 380 390 400
Y	20 May 0100 UTC	20 May 0800 UTC	DOVEY 42/60 44/50 46/40 48/30 49/20 BEDRA NASBA	350 360 380 390 400
Z	20 May 0100 UTC	20 May 0800 UTC	SOORY 43/50 45/40 47/30 48/20 48/15 OMOKO GUNSO	350 360 380 390 400
Z	19 May 0100 UTC	19 May 0800 UTC	SOORY 42/50 44/40 45/30 46/20 46/15 SEPAL LAPEX	350 360 380 390 400

Pacific Organised Track System (PACOTS) tracks are daily high altitude pacific routes between eastern Asia and the western coast of North-America. Eastward tracks are named numerically (1,2,3...). Similarly, westward tracks are named incrementally from the beginning of the alphabet (A,B,C...). Daily updates for each direction allow for routing around weather systems and tracking of favourable tailwinds to improve efficiency. The table below shows the current valid PACOTS tracks and the upcoming published PACOTS tracks.

Track	Valid From	Valid To	Route