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The Aircraft Bluebook Price Digest is a quarterly print publication by Informa (also available on CD-ROM) that was established in the 1950s. It identifies and prices more than 3,000 used general aviation aircraft and helicopter make and model-years available in the United States. Prices reflect historical data and cannot, therefore, take into ...
[2] [3] AOPA exists to serve the interests of its members as aircraft owners and pilots and to promote the economy, safety, utility, and popularity of flight in general aviation aircraft. [ 4 ] With 384,915 members in 2012, AOPA is the largest aviation association in the world, although it had decreased in membership from 414,224 in 2010, a ...
GL-5 is not necessarily backward-compatible in synchro-mesh transmissions which are designed for a GL-4 oil: GL-5 has a lower coefficient of friction due to the higher concentration of EP additives over GL-4, and thus synchros can not engage as effectively, unless a specialized friction modifier has been included within the oil's additive ...
AW additives, or antiwear additives, are additives for lubricants to prevent metal-to-metal contact between parts of gears. [ 1 ] EP additives are used in applications such as gearboxes , while AW additives are used with lighter loads such as bushings .
An aircraft flight manual (AFM) is a paper book or electronic information set containing information required to operate an aircraft of certain type or particular aircraft of that type (each AFM is tailored for a specific aircraft, though aircraft of the same type naturally have very similar AFMs). The information within an AFM is also referred ...
The choice of additives is determined by the use, e.g. the oil for a diesel engine with direct injection in a pickup truck (API Service CJ-4) has different additives than the oil used in a small gasoline-powered outboard motor on a boat (2-cycle engine oil).
General aviation aircraft production in the U.S. -- following its 30-year peak in the late 1970s—dropped sharply over the next few years to a fraction of its original volume [12] —from approximately 18,000 units in 1978 [8] [13] [14] [15] to 4,000 units in 1986.
Extreme pressure additives are usually used in applications such as gearboxes, while antiwear additives are used with lighter load applications such as hydraulic and automotive engines. Extreme pressure gear oils perform well over a range of temperatures, speeds and gear sizes to help prevent damage to the gears during starting and stopping of ...
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