Amid a tumultus week for the Pakistan International Airlines (PIA), its chairman, Muhammad Azam Saigol resigned on Monday, Waqt News reported citing sources in the aviation department.

A noted industrialist, Saigol was appointed chief of the national flag carrier in May 2016 after Nasser Jaffer resigned in wake of the controversy that had resulted from the countrywide strike by the airlines’ employees over the government’s reported privatisation plans.

According to PIA spokesperson Danyal Gilani, Saigol, who had remained on PIA’s board of directors since 2013, resigned due to 'personal reasons'.

The national flag carrier is under scrutiny after the crash of PK-661 that claimed all 47 lives on board the plane. The tragedy struck when the ill-fated flight was en-route to Islamabad.

Following the crash, PIA has faced severe public backlash and several international institutions have questioned the management over provision of adequate safety measures.

Another PIA flight, PK-581, escaped disaster after the aircraft's engine caught fire on Sunday. The flight was set to take off from Multan to Karachi but the aircraft was stopped at the runway before it could take off.

Since then, the plane along with other nine existing ATR jets have been grounded.