The PIA also demoted four employees for refusing to work and held back increments to three employees for violating the standard operating procedures.
According to a notification issued by the Civil Aviation Authority, licenses of 34 more pilots will remain suspended till the inquiry against them has not been completed.
Last week, cash-strapped Pakistan International Airlines (PIA) grounded 150 pilots with "dubious licenses" after the preliminary probe report of the Karachi plane crash.
Pakistan International Airlines this week said it would ground 141 of its 434 pilots after a government review found them to have obtained fake credentials.
The suspension will be in effect until further notice from CAAV, it said, adding that the authority is coordinating with Pakistani authorities to review the pilots' profiles.
Pakistan Air Line Pilots Association on Saturday questioned the authenticity of the list and called on the judiciary to intervene and investigate the matter instead of the government to ensure transparency.
The decision by the country's national carrier comes at a time when an initial inquiry into a PIA plane crash was presented before the parliament.