Ever wonder why the standby alternator or vacuum pump isn’t working? There is a drive coupling that is designed to break if something becomes stuck. They are also supposed to be replaced every 500 hours or they can start looking like this!
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Yearly Condition Inspection, Part II
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When it came to choosing a kit aircraft to build, columnist Amy Laboda and her husband opted for a metal design, in part because it would be resistant to destruction by lightning strike and also because fatigue is easier to detect in metal than it is in a composite plane. However, new nanotube technology, if integrated into composite construction material, could not only help identify wear problems, but also potentially heal them.
The Independence Project: Tackling the Tail
Dave Martin and the builders of Chapter 292 break out the rivet guns and bucking bars, and work on the RV-12 tail.
last time I looked, the vacuum pump drive spool had a 500hr OR 10 year service life whichever comes first.
Perhaps this is newer data than when you last looked, butTempest has a service letter, SL-001 which recommends replacement every 6 years.
In our glass cockpits the standby alternaotr seems pretty important. That’s why we recommend 5 years.
Vic