FAA-S-ACS-10B says the knowledge test report lists ACS codes for questions answered incorrectly and that those codes are found in the UAS ACS. This decoder maps those public standards to Drone Authority lessons and original practice material.
It does not access the FAA private question bank, reveal missed questions, or infer an answer from a code. If an entry cannot be matched exactly, the decoder sends you back to the official ACS instead of inventing a topic.
Educational study aid only. Always use the current FAA ACS and testing guidance for official requirements.