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Home > Exam Questions > BPL Hot-Air Balloon Pilot Licence > Aircraft General Knowledge > Which is the purpose of the altimeter subscale?

49 - EASA BPL Hot-Air Balloon Theory in English - Which is the purpose of the altimeter subscale?

Question 49 - Aircraft General Knowledge - BPL Hot-Air Balloon Pilot Licence

To reference the altimeter reading to a predetermined level such as mean sea level, aerodrome level or pressure level 1013.25 hPa

To correct the altimeter reading for system errors

To set the reference level for the altitude decoder of the transponder

To adjust the altimeter reading for non-standard temperature

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