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Case I, II, III ... uhm...?


Flagrum

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Wags and Lex are teaching us how to fly the differnt approach types. Nice!

 

B..but maybe someone can explain briefly:

- what are the general differences between the types?

- what defines which type is to be used?

 

I assume, it comes down to weather and visibility? But what are the pros and cons of each type for what kind of environment?

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Short version:

 

Weather is the determining factor, yes.

 

Case I: Requires 3,000 feet and 5 miles visibility. Below this, Case II/III.

Case II: Requires 1,000 feet ceiling and 5 miles visibility. Below this, Case III.

Case III: When below the above limits, and at night.

 

Case I employs VFR approach, break, and pattern.

Case III is straight in on instruments.

Case II is a hybrid. Initial approach is on instruments, then Case I type pattern once visual.

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