I noticed that too, but cannot find a solution. Any suggestion?
I'm not any kind of webmaster, but maybe some sort of admin tools to a selected number of members on your website for deleting and transfering (correcting) these enties would help!?
I think with such a huge database you need people sepcialized in some area.
Like military registrations, or simply by countries...
Also, suggestions to your "ulpoaders" of what do you want to see would be nice.
maybe you want te see Airbus A320-211
or Airbus Industrie 320-211. it's just an exemple...
About Aden, It was a British colony between 1939 and 1967, thus the VR-A.. prefixes (which was used till 1969).
for exemple: Rhodesia (VP-Y), Hong Kong (VR-H), British Camerouns (VR-N) and many other ex or actual colonies use the V letter.
wikipedia:
In 1839, the British occupied the port of Aden and established it as a colony They also set up a zone of loose alliances (known as protectorates) around Aden to act as a protective buffer. North Yemen became independent of the Ottoman Empire in 1918 and became a republic in 1962.
In 1967, the British withdrew from Aden. The former Aden became known as South Yemen. The two Yemeni countries were formally united as the Republic of Yemen on 22 May 1990.
most of the prefixes can be found on this excellent website
http://daveg4otu.tripod.com/pref.html
brgds
Eurotrans