True AirspeedFree topics
DGCA CPL and ATPL theory
Free theory topics
Short, checked answers to the questions students ask most. Each page has the key numbers, their sources and a video where we have one.
Technical General
- The International Standard Atmosphere (ISA), explained
What the ISA is, its sea level numbers (15 °C, 1013.25 hPa, 1.225 kg/m³), the 2 °C per 1,000 ft lapse rate, ISA deviation and why TAS rises at constant IAS.
Study the whole subject
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