Up-to-date airspace data for mainland UK in OpenAir and TNP formats.
I have tried to make this data as accurate as possible, but
there will still be errors. Good airmanship is your responsibility,
not mine. Don't blame me if you go somewhere you shouldn't have
gone while using this data.
The recommended output format is OpenAir. Tim Newport-Peace (TNP)
format should be used with caution; it is not interpreted consistently
by all software.
RA(T)s can be download separately from the main airspace
by setting the Format to "OpenAir, RA(T) only". Your moving map can
then be updated without changing the main airspace file.
No-ATZ Airfields are listed as training aerodromes in
section ENR 5.5 of the AIP. (Most of the smaller airfields
shown on the 1:500000 chart are not listed in the AIP and are not
included by this app.)
Gliding Airfields are listed in ENR 5.5 and are
given a radius of 1 nm by ASSelect. Your home site is
excluded if selected on the Opt tab.
Microlight Airfields are listed in ENR 5.5 and
are given a radius of 0.5 nm by ASSelect.
Obstacles are listed in ENR 5.4. Only obstacles
with a height of greater than 600 ft (mainly radio masts) are
included by ASSelect.
ATZs. A radio call is required before entering an active
ATZ. The BGA recommend setting them to Class D as a reminder.
However setting them as Control Zones will also generate an airspace
warning while distinguishing them from true Class D airspace.
ILS Feathers are not strictly an airspace type but the
BGA recommend a radio call if you are in the vicinity. It's also
recommended to set the airspace type to generate a warning on your
moving map. Note the feather is symbolic only - the instrument
approach procedure extends well outside the area of the feather.
Letters of Agreement, LoA
BGA LoAs are listed on the
With the exception of the Cambridge RAZ a local briefing is required
before using any of the LoAs.
Cambridge RAZ. The Cambridge Radio Advisory Zone (RAZ)
is not controlled airspace. It's not mandatory but anyone flying
in the vicinity of Cambridge airport is encouraged to make contact
with Cambridge Approach before entering the RAZ. The RAZ is
permanently enabled in ASSelect.
Note - Openair doesn't support
a RAZ airspace type so a Radio Mandatory Zone (RMZ) type is used
as a substitute.
Temporary Restrictions, RA(T)
RA(T)s are detailed in Mauve AICs on the
NATS AIS website.
RA(T)s can be downloaded separately from the rest of the airspace,
see Output Formats above.
Airspace data is updated every four weeks - see
This site is normally updated approximately two weeks in advance of
the effective date.
Release history summary, see here.
The airspace database can be downloaded from
Comments, corrections and complaints to: