Chapter 7. En Route Data ▶ Section 1. Performance Checks 7-1-1. RADAR PERFORMANCE CHECKS 7-1-2. SPECIAL RADAR ACCURACY CHECKS ▶ Section 2. Deficiencies 7-2-1. DEFICIENCIES IN SYSTEM 7-2-2. AMPLITRON OR PARAMETRIC AMPLIFIER FAILURE 7-2-3. ELECTRONIC ATTACK (EA)