amended clearance

amended clearance

A clearance issued by air traffic control amending a previous ATC (air traffic control) clearance in response to a request from the pilot or initiated by air traffic control to avoid conflict with other aircraft or severe weather.
References in periodicals archive ?
While south bound and casually monitoring the center, I picked up the tail end of an amended clearance, ".
You're flying the amended clearance you received on the ground at LVK and are just past the Manteca VOR when your headset falls apart.
123, which says that "When an ATC clearance has been obtained, no pilot in command may deviate from that clearance unless an amended clearance is obtained.
123 (Compliance with ATC clearances and instructions) makes it clear this is the pilot's problem: "No pilot in command may deviate from that clearance unless an amended clearance is obtained, an emergency exists, or the deviation is in response to a traffic alert and collision avoidance system resolution advisory.