An aircraft in climb or descent is considered to have crossed a level when the SSR mode C derived level information indicates that it has passed this level in the required direction by ? Study > Manual
![exemple question 119](https://www.furious-atpl.com/documents/IMG_119.jpg)
An aircraft intercepted by another aircraft shall immediately attempt to establish radio communication with the intercepting aircraft on the following frequencies ?
![exemple question 120](https://www.furious-atpl.com/documents/IMG_120.jpg)
Outside RVSM airspace an aircraft is considered to be maintaining its assigned level as long as the SSR mode C derived level information indicated that it is within ?
![exemple question 121](https://www.furious-atpl.com/documents/IMG_121.jpg)
![exemple question 122](https://www.furious-atpl.com/documents/IMG_122.jpg)
![exemple question 123](https://www.furious-atpl.com/documents/IMG_123.jpg)
![exemple question 124](https://www.furious-atpl.com/documents/IMG_124.jpg)
![exemple question 125](https://www.furious-atpl.com/documents/IMG_125.jpg)
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