Earlier, the authority had sent the certificates to different educational boards of the country for verification. All the boards have confirmed that more than 20 crew members have fake degrees.
'Suspended' PIA air hostess 'manages' to travel on Toronto flight, goes missing
The CAA has now written to PIA, asking the airline to immediately terminate the services of those staff members.
The national flag carrier has now taken action against them.
Earlier this month, PIA informed the Supreme Court that at least 12 pilots and 73 crew members had fake degrees.
Earlier this year, a PIA air hostess, who had earlier barred from travelling on international routes, went missing in Canada.
Fareeha Mukhtar, who was suspended from service in 2015 over allegation of smuggling of currency and mobile phones, went missing following the Lahore-Toronto flight.
Mukhtar was earlier barred from service on all international routes, including the US.
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