Penegakan prinsip business judgement rule terhadap keputusan direksi perseroan analisis kasus keputusan pemberian fasilitas pembayaran pesawat terbang kepada PT Mandala Airlines oleh direksi PT PANN Persero = The enforcement of business judgement rule principle against the decision of the board of directors of the company case analysis of the decision to grant aircraft financing facility to PT Mandala Airlines by the board of directors of PT PANN Persero