← All explained questions · Supplemental original questions
What does "unable" mean in aviation communication, and when should a pilot use it?
Choices
It means the pilot does not understand the instruction
Incorrect. Review the explanation and the cited FAA reference for the correct answer.
✓ It indicates the pilot cannot comply with a clearance or instruction for safety or aircraft limitation reasonscorrect
"Unable" indicates that the pilot cannot comply with a specific ATC clearance or instruction. Reasons include aircraft performance limitations, weather, fuel, or safety concerns. The pilot should state "unable" and, if possible, suggest an alternative.
It is used only during emergencies
Incorrect. Review the explanation and the cited FAA reference for the correct answer.
It means the pilot needs the instruction repeated
Incorrect. Review the explanation and the cited FAA reference for the correct answer.
Why
"Unable" indicates that the pilot cannot comply with a specific ATC clearance or instruction. Reasons include aircraft performance limitations, weather, fuel, or safety concerns. The pilot should state "unable" and, if possible, suggest an alternative.
FAA source: Pilot/Controller Glossary (UNABLE), AIM 4-4-1browse the reference library →
Try 10 more questions on this topic →Free, no signup needed to start.
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question. Reviewed by a panel of three CFIs + AI review.