While en route at 4000 feet, ATC issues you the following advisory: "Flock of small birds, twelve o'clock, six miles, last reported at four thousand." What does this signify?
Two pilots walk into the waiting room of an Aviation Medical Examiner to renew the medical certificates that they carry along with their private pilot certificates. One believes himself to be in excellent health, and although he doesn't need it, decides to "upgrade" to a first class medical. The other is content with keeping his third class medical. The "third class" pilot passes his exam with flying colors. The AME finds a minor eye problem however, in the case of the first guy. What happens?
From the North Pole, one can only go southward. Not being the trusting type, rather than following the slightly suspicious-looking sign pointing every which way with directions and distances to several of the world's major cities, you decide to set out on your own. Unfortunately, you forgot your watch. The problem is that, to know where one is going, one must know the meridian being followed. Without a way to tell time, how could one determine one's longitude?