Thanks so much for this 🫶🏼 CASA lists "cost index" as required syllabus knowledge for ATPL (A) Performance exams, but as the exam is based on the 727, there is no such thing as cost index in its POH. As such, the main theory books provider for the ATPL exams here in Australia don't talk about cost index at all 🤦🏽♀️! Ughh this is the same as de-rated thrust for take-off. Doesnt exist in 727 world, so we're not taught it, even though it's listed as required knowledge 😒.
![COST INDEX aviation - [What it is, How to calculate it and a Simulator example]](http://i.ytimg.com/vi/ofSAHoQPDwM/mqdefault.jpg)
Thanks for the explaination
Thanks so much for this 🫶🏼 CASA lists "cost index" as required syllabus knowledge for ATPL (A) Performance exams, but as the exam is based on the 727, there is no such thing as cost index in its POH. As such, the main theory books provider for the ATPL exams here in Australia don't talk about cost index at all 🤦🏽♀️!
Ughh this is the same as de-rated thrust for take-off. Doesnt exist in 727 world, so we're not taught it, even though it's listed as required knowledge 😒.