Besides, the Directorate General of Civil Aviation (DGCA) has also withdrawn "acceptance" of Chief Executive Officer of a MRO operator as accountable manager, sources said today.
The alleged violations, according to DGCA investigation, included forged signatures on various documents which are supposed to be certified by the aircraft maintenance engineers before undertaking any flight, among others.
The action came after DGCA conducted random checks on some seven such companies, operating out of Mumbai's Juhu airport in May this year, and found "gross violation of safety norms" by these personnel, they said.
Earlier, as many as 270 airline crew members, mostly pilots, were found violating safety norms this August this year by the DGCA, which suspended over 150 of them for such air safety violations.