DGAQA QA Coverage TAA 1090 DGAQA QTP Quality Assurance Standard Operating Procedure Zero Defect Flight Safety Government Quality Assurance Industry 4.0 QA 4.0 GSE Airworthiness Regulatory Authority Quality Rating IAQG Reliability QMS Aerospace Defence Production FOD Management IMAP IMTAR AFQMS Registraion of Firm DGAQA Vendor Registration Test Lab Approval"