E6B DASH: E6B practice for pilot mental math
A free flight computer game with ten quick drills, styled like a whiz wheel and a kneeboard.
How to play
- Start a 90-second flight, or take the daily challenge: 15 questions, the same set for every pilot that day.
- Type your answer on the on-screen keypad or your keyboard, then press Enter. Small rounding is fine.
- Answer fast and in a row to build a combo. Use Practice to drill one topic with no clock, and press H for its shortcut.
Why pilots like it
Mental math is the backup when the tablet battery dies or the whiz wheel is at home. Quick checks like the 60-rule for time, the 3:1 rule for descent and the crosswind rule of thumb let you plan ahead and sanity-check what you see. Drilling them until they feel automatic keeps your head in the cockpit.
Questions pilots ask
Does this replace an E6B?
No. It trains the mental math behind the flight computer. Carry a working flight computer or electronic backup on every flight.
What is the crosswind component rule of thumb?
Multiply the wind by a fraction set by the angle from the runway heading: 15 degrees is about one quarter, 30 degrees about one half, 45 degrees about three quarters, and 60 degrees or more is roughly the full wind. The exact value is wind times the sine of the angle.
How is density altitude estimated?
As a rule of thumb, add about 120 feet for every degree Celsius that the temperature is above standard (ISA) at that pressure altitude. It is an estimate; use the aircraft performance charts for real decisions.
Is it free?
Yes. There is no sign-up. Scores go to the Stratux Arcade board, or stay in your browser if the board is offline.
Related reading: how ADS-B works, and Get a Stratux.
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