Fig & Fir...

[Check my bad SLF]

Evening all...

I wonder if anybody could shed any light on the different type of aerodrome light beacons? The Morse code ident is shown on the ICAO UK half-mil chart along with either FIG or FIR in purple or blue right next to it.

Does anybody know what these stand for?

Thanks in advance...

[Meikleour]

Is it not Flashing Intermittant Red (military fields) and Flashing Intermittant Green for civil fields.

[Check my bad SLF]

That would make a great deal of sense, and distant memories of Air Law are flooding back.

Thanks very much!