Assignment of IATA-code AGA between GMAA- and GMAD-airfields edit

As far as I understand, (Agadir-)Inezgane Airport (ICAO-code: GMAA) used to be the primary airport for Agadir. I recall having landed there in 1981, when IATA-code AGA was still assigned to this airfield.

Does anybody know when IATA-code AGA was transferred to (Agadir-)Al Massira Airport (ICAO-code: GMAD) ?

P.S. I am posting the same question at talk:Agadir–Al_Massira_Airport.
Archie02 (talk) 07:29, 7 January 2014 (UTC)Reply