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The following stories from the June 27, 2008, edition of AOPA ePilot were provided to AOPA members who expressed an interest in the particular subject areas. Any AOPA member can receive information tailored to their areas of interest by updating their preferences online.


My ePilot - Student Interest, Training Tips
THE ACTIVE RUNWAY
Whether heading out to fly, or returning to land, one bit of information every pilot needs is an answer to the question, "What's the active runway?" At towered airports you'll get the answer on the automated weather recording or when ATC replies to your call-up with instructions: "Taxi to Runway 33." At nontowered airports, procedures are less formal, but usually the correct course of action is clear. Automated weather will provide surface winds. The fixed-base operator may respond to your request for an airport advisory with runway information. Or monitoring the common traffic advisory frequency may reveal which runway is "active."

Occasionally the runway in use seems badly matched to the winds. It could be that a student pilot is getting a lesson in crosswinds. Or a large aircraft may opt to use the longest runway available. Now you have a decision to make. "Remember, this is a nontowered airport. The fixed-base operator providing you with active-runway information is not an air traffic controller and cannot require you to land on a runway that you consider inappropriate, if, for example, winds favor another," explained the Sept. 16, 2005, "Training Tip: Airport Advisory."

Scenarios like that are common. "Whenever a student asks me what the active runway is, my response is to shrug my shoulders and reply, 'I don't know, you're the one landing the airplane, not me. If it were my landing to do I would probably pick the runway with the most favorable wind conditions," said one flight instructor in "Instructor Reports: Pattern Operations Revisited." The article also discusses the provocative case of a business jet and a single-engine training airplane seeking to use opposite ends of the same runway, a situation that raised challenging questions for all pilots.

What if the winds are calm? Then the runway choice is yours-in most cases. Prepare to fly by always checking AOPA's Airport Directory for any special procedures, such as this requirement in effect at Bar Harbor, Maine (BHB): "durg VFR conds when wind speed is less than 5 knots as rprtd by AWOS or UNICOM; all acft using ry 4-22 shall tkof & lnd ry 22."

If there's an active runway, make sure it is also the correct runway to use.


My ePilot - Training Product
PREP FOR TESTS WITH ASA'S SIMULATED TESTING CENTER
Studying for a knowledge test? Aviation Supplies and Academics has unveiled Prepware.com, a dedicated Web site for airman knowledge tests. The site features actual FAA questions in a realistic simulation and performance graphs that let you review explanations and answers for the entire test. You can take up to five practice tests. Submit two tests with an 80 percent score or better, and you can get a sign-off from ASA to take your knowledge test. The site costs $14.95 to join, which gives you complete access to practice exams for general airframe, powerplant, sport, private, instrument, flight instructor, ground instructor, fundamentals of instructing, flight engineer, and airline transport pilot. You can also try a free demo before purchasing. See the Web site for more information.


My ePilot - Student Interest, Final Exam
Question: What is the difference between condensation and sublimation?

Answer: Condensation is the conversion of a vapor to a liquid. Sublimation is a conversion of a solid to a vapor with no intermediate liquid stage. The reverse of sublimation is known as deposition. Frost is an example of deposition frequently encountered by pilots. Interested in learning more about weather? Take the AOPA Air Safety Foundation's free online weather course.

Got a question for our technical services staff? E-mail to [email protected] or call the Pilot Information Center, 800/872-2672. Don't forget the online archive of "Final Exam" questions and answers, searchable by keyword or topic.

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