พระฉายาลักษณ์ ‘สมเด็จพระนางเจ้าสุทิดาฯ’ รอยยิ้มแห่งแผ่นดินตรึงใจพสกนิกร
I would assume as a pilot, you have the basic knowledge of the first segment of taking off. Once you have gotten beyond the basic plane take off duties, you are ready to enter the next segment.
from: http://ezinearticles.com/?Tips-For-Pilots---Techniques-For-Taking-Off-in-Normal-Conditions&id=3199473
