Aviators,

Determine your Calibrated AirSpeed.

- Do you suspect that the Airspeed Indicator of your aircraft is not reading correct?
- Want to find out how fast you are really flying?

• FIND OUT WITH THE "GPS CALIBRATION METHOD".

We can use the groundspeed information from a GPS to calculate the Calibrated AirSpeed (CAS).
The most convenient way is to use this "Get CAS" aviation app which guides you through the whole process with spoken instructions and does all the work for you while you can concentrate on flying!
So stop wondering how accurate your ASI is. Grab your tablet or smartphone, fire up this app and get answers!

• HOW DOES IT WORK?

The app uses your device's GPS to record ground speed, bearing (track) and altitude, from three flown legs.
When the sequence of three flown legs is finished, the app asks you to enter your Indicated AirSpeed (IAS) and next it calculates the Calibrated AirSpeed (CAS).
Moreover it produces a nice graph, IAS vs. CAS, which you can print out for future reference. (Internet connection required)

All sequences are stored in the app on your device, nowhere else, so private.
You can store data for 1 aircraft.
You can buy more Aircraft Data Slots by simply tapping the "Add Aircraft" button when the max aircraft is reached.
Detailed Instructions are in the app on the "About" page.

• DEFINITIONS:

- Indicated Airspeed is the speed shown on the airspeed indicator.
- Calibrated Airspeed is indicated airspeed corrected for position installation error.
- Equivalent Airspeed is calibrated airspeed corrected for compressibility.
- True Airspeed is equivalent airspeed corrected for temperature and pressure altitude.