The Baro Altitude instrument and the Altitude Tape in the AHRS view can display pressure altitude corrected for local barometric pressure, otherwise known as indicated altitude.
To display Baro Altitude, ForeFlight must be connected to an ADS-B In device equipped with a barometric pressure sensor, such as a Sentry. (ForeFlight does not use the barometric pressure sensors built into some iOS devices.) It can then use various data types to convert pressure altitude to indicated altitude. These include:
- ADS-B data from an ownship target or nearby traffic.
- Altimeter settings from the nearest METAR report within 100 nm.
Throughout the ForeFlight app, indicated altitude is referred to as baro-corrected pressure altitude, baro altitude, or BARO ALT.