This is the first such arrangement between a big American bank and a large foreign airline.
By 2012 it became the largest private airline in the country employing around 1,000 people.
He also rejected an alliance with another large airline for at least five years.
Continental has also put into practice what many of the largest airlines are only thinking about doing.
Boeing had never made such a major investment in a large airline, and this deal raised several questions.
But the practice has become increasingly popular in recent years among both large and small airlines.
But with the two largest airlines leading the way, others may follow.
It is Pakistan's second largest airline with over 20% share of the domestic market.
The companies said it would create an airline large enough to compete with American carriers.
Two of the country's largest airlines are expected to merge next year.