Question id 48 - Aircraft General Knowledge - Quiz BPL Gas - Balloon Pilot License

Altitude above the reference pressure level 1013.25 hPa
Magnetic bearing to a station
Barometric pressure adjusted to sea level, using the international standard atmosphere (ISA)
Barometric pressure at a reference datum, typically the runway threshold of an airfield

Training tests and timed exam simulations Quiz BPL Gas - Balloon Pilot License