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
