KARACHI Secretary Aviation Irfan Elahi has been made acting chairman of Pakistan International Airlines (PIA). The decision is made by Prime Minister Nawaz Sharif as former PIA Chairman Azam Saigol had resigned on December 13. It is pertinent to mention that Saigol forwarded his resignation to the PIA board of governors citing ‘personal reasons’ few days after the unfortunate PIA PK 661 crash.