4-5-1
Vertical Separation Minima
JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov
Separate instrument flight rules (IFR) aircraft using the following minima between altitudes:
- Up to and including FL 410- 1,000 feet.
- Apply 2,000 feet at or above FL 290 between non-RVSM aircraft and all other aircraft at or above FL 290.
- Above FL 410- 2,000 feet, except:
- In oceanic airspace, above FL 450 between a supersonic and any other aircraft- 4,000 feet.
- Above FL 600 between military aircraft- 5,000 feet.