When should a pilot use "wilco" instead of "roger"?

Choices

• When the pilot does not understand the instruction

  Incorrect. Review the explanation and the cited FAA reference for the correct answer.

• ✓ When the pilot has received the message and will comply with the instructioncorrect

  "Wilco" means "I have received your message, understand it, and will comply." "Roger" means only "I have received your message." Use "wilco" when ATC gives an instruction you intend to follow. Never use both together — "roger wilco" is redundant.

• When the pilot wants to acknowledge receipt of information only

  Incorrect. Review the explanation and the cited FAA reference for the correct answer.

• "Wilco" and "roger" are interchangeable

  Incorrect. Review the explanation and the cited FAA reference for the correct answer.