A-EFIS Black and White is an Electronic Flight Information System designed for use in airplanes. It is a free version of the A-EFIS app, with the only difference being that it is in black and white. This app utilizes the internal sensors of your iPhone/iPad to provide accurate flight data.

With A-EFIS Black and White, you can access features such as the Artificial Horizon (AHRS), ground speed, altimeter, vertical speed, turn coordinator, slip ball, compass, true course indicator, and deviation from true track indication. These features are achieved through digital filtering methods and state-of-the-art stochastic models, ensuring exceptional accuracy and robustness.

It is important to note that A-EFIS Black and White is specifically designed for use in airplanes and should not be used in helicopters or land vehicles, as the indications will not be correct. The app has been extensively tested on various types of aircraft, including ultralights, LSA, general aviation, and even airliners. In fact, you can use A-EFIS Black and White in an airliner by sitting close to a window, placing the device in a stable position, and calibrating the AHRS when the aircraft is in leveled flight.

However, it is essential to understand that A-EFIS Black and White is not a certified aviation instrument and should not be relied upon as the sole navigation aid. Users must comply with this warning to avoid potential property damage, serious injury, or even death. By using this application, you assume total responsibility and risk associated with its use.