G- is the code for UK registred planes, as seen in
The Black Island: G-AREI, G-ARCR, G-AIRJ (see close-up p.36), and in
Flight 714 where -for over 10 pages- the 'Carreidas 160' shows its registration G-CATF (see 'G-' close-up p.16).
about international plane registrations, see
http://www.geocities.com/CapeCanaveral/Lab/8803/fctrycod.htm#d
The UK registrations of the 3 propeller planes & Carreidas jet** -found in consecutively published albums in the English versions- are visible connections between the British Isles (
The Black Island) and Sondonesia's Pulau Pulau Bompa Archipelago (
Flight 714), aside from the 'invisible' link between original password* or pun* title
L'Ile Noir* and the East Indies*.
About the Carreidas' military trait, see
http://en.wikipedia.org/wiki/Swing-wing
* please search for related threads.
** its impossible speed* makes it spatiotemporal*, as well as its contrail (that kind of duplicates it, as it can be seen on the cover, but not in the book).