The first LPH2O.com spotting registration database is ready for testing. It is a beta version and can be found here: https://www.lph2o.com/library/knowledge/registration-database . You need to register to download it. It is available for iPad, MAC OSX and Windows.
LPH2O.com database in numbers:
1.481.610 pre-records
1.886 Aircraft ICAO Codes
964 Airline Codes
13.603 Airport/Airfield/Heliport Codes
2.156 Airlines Extra Information
5.826 Airlines Call Sign
8.138 Radio Frequencies
220 Tail Codes
We hope you enjoy it!