What phraseology is used to amend a previously issued clearance?

• A. CLEARED TO NEW ROUTING VIA (amended information)
• B. CLEARED TO CHANGE ROUTE VIA (amended information)
• C. CHANGE ROUTE TO READ (amendment to route)
• D. (Amendment to route), REST OF ROUTE UNCHANGED

Answer: (B)

When you need to modify a clearance, you state that the route is changing and supply the new routing data as amended information, while leaving the rest of the clearance intact. This makes it clear to the pilot exactly which part is being updated and what to follow now.

The form “CLEARED TO CHANGE ROUTE VIA (amended information)” does this directly: it signals a route modification and provides the updated routing details in one clear instruction. It keeps the rest of the clearance—altitude, speed, destination—unchanged and unambiguous.

Other phrasings either imply issuing a brand-new route rather than amending the existing one, refer to correcting an error in the original clearance, or aren’t the standard way to announce an in‑flight route amendment. For example, corrections are typically handled with a different “change to read” style when the goal is to fix what was issued previously, not to modify the route itself.