You are a remote pilot for a co-op energy service provider. You are to use your UA to inspect power lines in a remote area 15 hours away from your home office. After the drive, fatigue impacts your abilities to complete your assignment on time. Fatigue can be recognized

Why: This is a published FAA UAG sample knowledge-test question. Its correct answer is that fatigue is recognized as being in an impaired state — the remote pilot study guide notes fatigue is frequently associated with pilot error and "may not be apparent to a pilot until serious errors are made," making it an impairment rather than something easily self-detected.

• Experience does not make fatigue easy to self-recognize; the study guide specifically warns that fatigue's effects may not be apparent to the pilot experiencing them.
• Fatigue cannot be willed away or overcome by ability — the study guide states that adequate rest, not willpower, is the only way to prevent and resolve fatigue.