Which acronym stands for the Main Cabin Door?

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Multiple Choice

Which acronym stands for the Main Cabin Door?

Explanation:
In aviation documentation, abbreviations are used to label major components clearly and quickly. The Main Cabin Door is abbreviated as MCD, a label you’ll see on diagrams, quick-reference guides, and procedure checklists to identify the primary passenger entry/exit point. The other terms don’t match this door: GSD isn’t a standard designation for the Main Cabin Door, MEL refers to the Minimum Equipment List (a separate document governing equipment), and LEO is not used for naming doors. So MCD is the correct shorthand for the Main Cabin Door.

In aviation documentation, abbreviations are used to label major components clearly and quickly. The Main Cabin Door is abbreviated as MCD, a label you’ll see on diagrams, quick-reference guides, and procedure checklists to identify the primary passenger entry/exit point. The other terms don’t match this door: GSD isn’t a standard designation for the Main Cabin Door, MEL refers to the Minimum Equipment List (a separate document governing equipment), and LEO is not used for naming doors. So MCD is the correct shorthand for the Main Cabin Door.

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