Flight Procedure Standards Branch-Policies & Guidance

• Advisory Circulars (AC)
• Approval of Offshore Standard Approach Procedures, Airborne Radar Approaches and Helicopter En Route Descent Areas. AC 90-80B (PDF)
• Use of Barometric Vertical Navigation (VNAV) for Instrument Approach Operations Using Decision Altitude. AC 90-97 (PDF)
• Orders/Notices
• TERPS Instruction Letters (TILS)
• Policy Memorandums
• Draft Directives

For information pertaining to AFS-420's Directives, contact the Directives Management Representative