What is the correct example of phraseology when assigning a higher altitude?

What is the correct example of phraseology when assigning a higher altitude?

• A. ACID maintain
• B. ACID climb and hold
• C. ACID climb and maintain
• D. ACID ascend and maintain

Answer: (C)

When you want to assign a higher altitude, use the phraseology that tells the pilot to climb to a new altitude and then stay there. The standard way to do this is “climb and maintain,” followed by the new altitude. This clearly communicates two things: first, increase height to the specified level, and second, keep that altitude until further instructions. Using the verb climb is the conventional choice in ATC language, not ascend. And the instruction should link to maintaining the new altitude, not just a generic hold. So saying “ACID climb and maintain” (with the altitude added) is the correct form. It directs the aircraft to reach the higher altitude and then hold it.

When you want to assign a higher altitude, use the phraseology that tells the pilot to climb to a new altitude and then stay there. The standard way to do this is “climb and maintain,” followed by the new altitude. This clearly communicates two things: first, increase height to the specified level, and second, keep that altitude until further instructions.

Using the verb climb is the conventional choice in ATC language, not ascend. And the instruction should link to maintaining the new altitude, not just a generic hold. So saying “ACID climb and maintain” (with the altitude added) is the correct form. It directs the aircraft to reach the higher altitude and then hold it.