Shareholders of both companies approved that deal earlier this week.
On 25 September 1981, shareholders approved the changes at a general meeting.
Last week, shareholders approved a plan to separate the company's stock into two groups.
Shareholders approved the deal during the extraordinary general meeting held on September 28, 2012.
Shareholders approved the plan at an extraordinary general meeting on 23 October 2001.
Shareholders of both companies have approved the deal, which the company expects to complete in the next few months.
It will not be over officially, however, until shareholders of both companies approve, four or five months from now.
The shareholders of both airlines approved the deal on September 17, 2010.
By then, lawyers said, the company will know whether the shareholders have approved the settlement.
Shareholders of both carriers approved the deal on 29 November 2010.