Sharpen your cockpit maths.

"Make a one-eighty" — call the reciprocal heading in your head, instantly. Three modes from compass-point basics to timed ATC calls.

"How far, how long, how fast?" Solve it in your head with the miles-per-minute method — then add wind for the ground-speed challenge.

"Have I got enough?" Convert gallons to pounds, work out burn and endurance, and plan a trip with a reserve before the clock runs out.

"How fast are we really going?" The cockpit reads slow at altitude — add 2% per 1000 ft to get true airspeed. From the +2% rule to FL350 jets, in your head.

Read the wind angle off the runway like a clock face — 15° quarter, 30° half, 45° three-quarters, 60°+ full crosswind.

Split any wind into headwind and tailwind in your head using the 15-30-45-60-75 multiplier table.

Work out drift angle in your head — crosswind divided by miles-per-minute, from pure division up to full ATC wind correction.

Work out ISA temperature and deviation in your head — 15°C, minus 2°C per 1,000 ft.

Convert outside air temperature between Celsius and Fahrenheit in your head — the cockpit shortcut, no whiz-wheel needed.

Convert HH:MM to minutes, add two flight legs, then nail the landing time before the clock runs out.

Flip pilot units in your head — kg↔lb, NM↔SM, m↔ft, gal↔L — then chain two flips for fuel-load planning.

Find your top of descent in your head — thousands of feet to lose times three equals nautical miles out.

Work out the radius of a standard-rate turn from TAS using miles-per-minute squared, divided by nine.

Pick the bank angle for a standard rate turn — TAS over ten, plus seven — before the timer runs out.

Work out the speed at which a tyre lifts off a flooded runway — nine times the square root of PSI.