Mirza Ahmad Ispahani was the first chairman of an airline out of what main hub?
Mirza Ahmad Ispahani: Mirza Ahmad Ispahani (1898–1986) was a Perso-Bengali businessman and the patriarch of the Ispahani family based in Chittagong. Pakistan International Airlines:  Its main hub is Karachi while Lahore and Islamabad are its secondary hubs.
Karachi