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RunupLab

Free sims

Interactive tools for the concepts that are hard to feel from a book. Free, no signup, built to be used in ground lessons.

Charlotte Sectional Explorer

live

For: Student · Pilot

The real FAA Charlotte sectional. Click any point, set an altitude, and get every airspace designation over that spot with its published floor and ceiling — and an honest UNKNOWN where the answer isn't established.

Sectional Chart Reading Quiz

live

For: Student

Six real extracts of the Charlotte Sectional, and the questions an examiner actually points at: the airport data block, the bracketed Class D ceiling, Class B shelf labels, obstacle heights, the MEF, the part-time tower star. Every answer verified and cited.

Ground Reference Maneuvers

live

For: Student · CFI

Turns around a point, S-turns, and the rectangular course — all three in full 3D or the classic diagrams — with adjustable wind. Watch groundspeed drive bank angle in real time.

Engine Run-Up

live

For: Student · CFI

Start the engine and fly a full run-up on real-looking gauges: mag checks, carb heat, ignition grounding, oil, suction, and the ammeter — then diagnose ten fault scenarios from the evidence alone.

Traffic Pattern

live

For: Student · CFI

The standard left-traffic pattern with live wind — watch crab, groundspeed, and bank change on every leg, and the windsock tell you which runway to want.

3D Windsock

live

For: Student · Pilot

A real-time 3D windsock you can read like a pilot: set the wind, fire a gust, add turbulence — hanging, filling, flying, or fully extended at 15 knots and up.

Density Altitude

live

For: Student · Pilot

Dial in elevation, temperature, and altimeter — watch the takeoff roll stretch past your sea-level book number as the air thins out.

Pitot-Static Failures

live

For: Student · Pilot

Block the pitot tube, drain hole, or static port and watch the ASI, altimeter, and VSI respond — the frozen needle and the truth, side by side.

Crosswind Components

live

For: Student · Pilot

Set the runway and wind and watch it split into headwind and crosswind components — checked against your personal limit, the gusts, and the reciprocal runway.

Inoperative Equipment (91.213)

live

For: Student · Pilot · CFI

An instrument is dead — can you legally fly? Walk the 14 CFR 91.213(d) four-part gate for any item and any operation: placard and defer, or grounded until it's fixed.

Weight & Balance

live

For: Student · Pilot

Load a sample trainer and watch the CG dot move in the envelope — then watch it travel as the fuel burns off. The takeoff number alone doesn't tell you where you land.

WhizWheel E6B

app in development

For: Student

The mechanical flight computer, reimagined. The mobile app is in development; a web version follows.

More on the way

On the backlog: an ILS approach profile, an airspace cross-section, and an airspeed-indicator arc explorer. Join the list on the home page and we'll tell you when each one lands.