How should the lights be set for TTOL (Taxi, Takeoff, Landing)?

How should the lights be set for TTOL (Taxi, Takeoff, Landing)?

• A. Bright
• B. Dim
• C. Match outside
• D. Off

Answer: (C)

During Taxi, Takeoff, and Landing, lighting is set to match outside. This keeps the crew’s eyes adapted to the ambient light levels, reducing glare on cockpit displays and windows while still allowing enough light to read instruments and see outside cues like runway lights and other aircraft. Why this works: matching outside lighting preserves night vision and situational awareness. Bright lighting can create glare and wash out outside cues, making it harder to spot the runway and other important details. Dim lighting can hinder reading instruments and charts, and turning lights off removes needed visibility for safe operations during these critical phases. So the best choice is to set the cabin and cockpit lights to reflect the external lighting level, not excessively bright or off.

During Taxi, Takeoff, and Landing, lighting is set to match outside. This keeps the crew’s eyes adapted to the ambient light levels, reducing glare on cockpit displays and windows while still allowing enough light to read instruments and see outside cues like runway lights and other aircraft.

Why this works: matching outside lighting preserves night vision and situational awareness. Bright lighting can create glare and wash out outside cues, making it harder to spot the runway and other important details. Dim lighting can hinder reading instruments and charts, and turning lights off removes needed visibility for safe operations during these critical phases.

So the best choice is to set the cabin and cockpit lights to reflect the external lighting level, not excessively bright or off.