April 28, 2014
Question: In an aircraft with a reciprocating engine, the engine will be lubricated by either a dry- or wet-sump oil system. What is the difference?
Answer: The basic difference is in where the oil is stored. In a wet-sump oil system, all of the oil is contained in the sump, which is an integral part of the engine. In a dry-sump system, oil is stored in a separate tank and pumps are used to circulate it through the engine. (Source: Pilot's Handbook of Aeronautical Knowledge, page 6-15)
Aircraft Power and Fuel
Do you operate at airports or heliports that have LED systems? If so, AOPA, the FAA, the National Air Traffic Controllers Association, and multiple professional pilot organizations want to hear from you.
The Environmental Protection Agency has denied the most recent petition from environmental groups that asked the agency to reconsider a 2012 decision not to immediately pursue an endangerment finding for leaded avgas.
AOPA worked with the flight training industry and FAA to quickly resolve a problem that suddenly put many rating applications on hold.
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