The Pakistani national carrier has suspended the roles of 150 pilots over concerns that their licences may not be valid.
The county's aviation minister told parliament of his concern that some commercial airline pilots have counterfeit credentials or had not passed the appropriate exams.
Minister Ghulam Sarwar Kahn said that almost 30 per cent of the country's civilian pilots "did not take the exam themselves," reported CNN's from Islamabad.
Reports on historic air crashes the minister was concerned that the pilots involved were not qualified to be flying. This included a 2018 incident in which the pilot's licence had been printed during a public holiday, indicating that it was forged.
In all the aviation ministry's report found that 260 of the country's 860 pilots were void.
This shocking revelation comes after a fatal air crash in a residential area of Karachi on May 22, which killed 98 onboard and injured scores on the ground.