hi
Rather depends on what you are after ? for TRADE sites thats not so
easy for the spotter there are many you can trace , the EXCELLENT Jethros
fleet listing Website and SKYLINER news (both found on google) has new deliverys and other usefull facts .you could also try this
http://www.plane-spotters.net/ . liners ,fleet, companys and more . problem with a lot of spotters sites the information is old and never updated but i can reccomend you try those . there are Civil and mil listings to be found again try
the "AIRNET" site hundreds of links if it isnt there you dont need it
TONY
Farnborough-aviation-group
(spotters lists)