STAN full power trials are performed under which conditions?

• A. During daylight only
• B. After dark only
• C. Both A and B
• D. Never

Answer: (C)

Full power trials are designed to validate propulsion and power system performance under realistic operating conditions, including both light and dark environments. Testing in daylight lets you visually inspect machinery, monitor gauges with clear readability, and verify that equipment responds correctly as power is increased. Conducting the trials after dark ensures the crew can operate controls, read instrument panels, and respond to alarms when lighting is limited, and it helps verify that safety practices and lighting configurations do not impede performance. Some indicators or instrument readouts can behave differently under night conditions, and crew procedures may vary with visibility. By performing the tests in both daylight and after dark, you gain a complete picture of how the system behaves and how the crew handles operation, ensuring reliability and safety across conditions.