5. Within the scope of its official activities, the Observatory has immunity from suit and legal process except—
(a)to the extent that, by a decision of its Council, the Observatory waives it in a particular case;
(b)in respect of a civil action by a third party or damage arising from an accident caused by a vehicle belonging to or operated on behalf of the Observatory or in respect of a traffic offence;
(c)in respect of an arbitration award made under Article 14 of the Convention;
(d)in the event of an attachment order, pursuant to a decision by the administrative or judicial authorities, of the salaries, wages and emoluments owed by the Observatory to a member of staff; and
(e)in respect of a counterclaim relating directly to a main claim brought by the Observatory.