Tools▸ Tools · Wake separationThe wake matrix.
The wake matrix.
Without the cheat sheet.
Pick two aircraft categories. See the required separation in nautical miles (in-trail) or minutes (same-runway departure). The full .65 § 5-5-4 matrix is below the picker so you can study the pattern — not just memorize one cell.
MTOW > 300,000 lb. Most widebodies (B777, B747, A330, A350).
MTOW ≤ 12,500 lb. GA, small turboprop, light jets.
In-trail uses NM; runway-departure uses minutes.
Required separation
6NMWake minimum
Small behind Heavy: in-trail radar wake minimum applies.
JO 7110.65 § 5-5-4
Full matrix · In-trail (NM)
| Leading ↓ / Trailing → | Super | Heavy | B757 | Large | Small+ | Small |
|---|---|---|---|---|---|---|
| Super | — | 6 NM | 7 NM | 7 NM | 8 NM | 8 NM |
| Heavy | — | 4 NM | 5 NM | 5 NM | 5 NM | 6 NM |
| B757 | — | 4 NM | 4 NM | 4 NM | 4 NM | 5 NM |
| Large | — | — | — | — | — | 4 NM |
| Small+ | — | — | — | — | — | — |
| Small | — | — | — | — | — | — |
A dash (—) means no wake-specific minimum; standard 3 NM radar separation applies.