What frequency is used for the runway 9L-27R at O'Hare?

The frequency used for runway 9L-27R at O'Hare is 128.15. This frequency is associated with the air traffic control operations for that specific runway, allowing pilots to communicate with tower controllers for takeoffs, landings, and other essential instructions while operating in that airspace.

Understanding which frequency corresponds to which runway is crucial for effective communication and safe navigation. Pilots must be attentive to these frequencies to ensure they are tuned into the correct channel while on approach or departure. Frequencies can vary between different runways and airport operations; thus, knowing the correct frequency for each runway is fundamental for pilots and air traffic personnel.