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Purpose of This Change. This change transmits revised pages to Federal Aviation Administration Order JO 6190.19A, Maintenance of the Automated Radar Terminal System Expansion (ARTS IIE). It provides updates as directed by Order 6000.15F, General Maintenance Handbook for NAS Facilities. Technical Performance Record (TPR) forms have been removed from the handbook and users are directed to the TPR website for the latest approved TRP forms. The certification requirements in Appendix 1 have been modified to include separate certifications for the TRACON Automation Display System (TADS) and the Radar Tower Automation Display Service (RTADS). Other editorial changes and corrections are indicated by a change bar in the margin.