Among all the vital skills it takes to be a pilot, they now have a new risk to deal with.
Reports about a strange problem during takeoff and landing are coming in.
Bright flashes are appearing without warning, crossing cockpit windows at critical moments.
Air traffic authorities eventually picked up one detail in common. Most incidents happen near large solar installations built close to flight paths.
Investigation results discovered that solar farms are interfering with flight safety. How are aviation experts going to overcome this new threat to safety in the air?
Why airports originally welcomed nearby solar projects to their neighborhoods
Large airports often contain wide stretches of open land unsuitable for housing or heavy industry.
That made solar projects seem almost perfect.
Developers viewed unused areas near runways as ideal locations for renewable energy infrastructure. The sites already had road access, electrical connections, and restricted public entry.
Many airports also wanted cleaner energy sources to reduce long-term operating costs.
For years, aviation authorities generally believed solar panels created minimal risks if positioned correctly. Early studies focused mostly on physical obstacles rather than reflected light.
But pilots gradually began reporting unusual flashes during approaches and departures at certain locations.
The incidents appeared difficult to predict consistently. Some glare events lasted only seconds.
Others occurred repeatedly during sunrise or late afternoon operations.
That inconsistency complicated investigations for airport authorities and flight safety agencies.
Pilots, beware: A new phenomenon plaguing runways
Safety specialists eventually began studying how sunlight interacted with large solar arrays beside airports.
The reflections behaved differently than expected.
Solar panels are designed to absorb most incoming sunlight. Even so, certain angles still produce reflected glare capable of reaching aircraft cockpits.
Investigators found that aircraft altitude, seasonal sun positions, and panel orientation all influenced the intensity of the flashes.
Pilots described the light as distracting during sensitive flight phases.
Some crews reported temporary difficulty identifying runway markings immediately afterward. Others experienced brief visual discomfort while climbing after takeoff.
Color patterns became an important clue.
The flashes often appeared green, yellow, or white, depending on viewing angles and cockpit glass conditions.
Those colors sometimes intensified because aircraft windscreens altered how reflected sunlight scattered inside the cockpit.
The problem did not occur constantly.
But when conditions aligned perfectly, the reflections became highly noticeable for pilots, as noted by the International Civil Aviation Organization.
Flashes of green and yellow explained, but what’s the solution?
Investigators eventually traced the strange cockpit flashes to reflected sunlight bouncing off nearby solar panel arrays.
Sunlight struck sections of the solar farms at precise angles before reflecting toward aircraft.
Under certain conditions, cockpit windows scattered and intensified the reflected light. That produced the unusual green and yellow flashes pilots repeatedly described during flight reports.
Researchers say the phenomenon resembles glare created by water, glass buildings, or mirrored surfaces.
But aviation environments make the problem more serious.
Even brief visual distraction matters at low altitude.
Aircraft heading directly toward the reflection zones experienced the strongest flashes.
Weather conditions have their part to play, it’s not all renewable energy’s fault
That realization pushed aviation authorities to adopt stricter solar farm assessments around airports.
Some projects now require glare simulation studies first. Computer models are used to predict where reflections could strike pilots during different times of day and seasons of the year.
Certain airports have also adjusted panel orientation or added shielding barriers after repeated glare complaints.
The aviation industry still supports renewable energy expansion near airports.
But investigators now stress that “ideal” solar locations must also account for how sunlight behaves thousands of feet above the ground from a pilot’s perspective.
What other risks are solar farms waiting to present?