Commission notice pursuant to Article 4(1)(a) of Council Regulation (EEC) No 2408/92 — Imposition of a public service obligation for the period from 5 May 2003 until the change of timetable in March 2006 on scheduled air services between Mariehamn/Åland (MHQ) and Stockholm/Arlanda (ARN), supplementing earlier decisions (Text with EEA relevance)