For take-off obstacle clearance calculations, which method may be used to avoid obstacles in the first segment?

The first segment of take-off is crucial for ensuring that an aircraft clears any obstacles in its immediate vicinity after departure. The method of banking not more than 15° between 50 ft and 400 ft above the runway elevation is effective because it allows for a controlled climb while maintaining sufficient lateral distance from obstacles. This limited bank angle helps to maintain performance, as it prevents excessive loss of climb rate, which is particularly important in the critical initial climb phase where obstacles may pose a significant hazard.

By restricting the bank angle to 15°, pilots are able to prioritize altitude gain over horizontal maneuvering, ensuring that they clear obstacles safely. This method balances agility in maneuvering the aircraft with the need for a safe climb rate, which is vital in the busy phase of the climb directly after takeoff.

In contrast, the other methods may compromise safety or performance during this critical phase. For instance, banking as much as needed if the airplane is more than 50 ft above runway elevation could lead to excessive lateral movement and loss of altitude, making it a less safe option. Similarly, relying solely on standard turns or delaying turns until after reaching 1500 ft could result in prolonged exposure to obstacles, increasing the risk during those initial feet of the climb. Hence