class 1/2 navigation
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class 1/2 navigation
Hello!
I am looking for the definition of "class 1 & 2 navigation". I remember seeing it in the 135 ops manual of my former employer. Any help appreciated!
Thanks,
7 7 7 7
I am looking for the definition of "class 1 & 2 navigation". I remember seeing it in the 135 ops manual of my former employer. Any help appreciated!
Thanks,
7 7 7 7