rickofudall
 
  
  Joined: 19 Sep 2009 Posts: 1392 Location: Udall, KS, USA
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				 Posted: Wed Aug 22, 2012 4:37 am    Post subject: Recording flight time | 
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				One of the first things I learned about "flying time" was that the tachometer recorded time at a differential rate depending on engine RPM. The slower the engine turned the slower time passed. The Hobbs, on the other hand, recorded actual time. The flying club I belonged to charged for tach time. The 172 flew just as nicely at 2200 RPM as it did at 2500, although a tad slower, but the difference in cost was substantial. On average it cut my cost to fly by $5 to $6 an hour over the 400 hours I flew there. The time that went in my log book was off the Hobbs meter so I accumulated "flying time" at a standard rate.
  
 
 Rick Girard
 do not archive
 
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 Zulu Delta
 Mk IIIC
 Thanks, Homer GBYM
 It isn't necessary to have relatives in Kansas City in order to be unhappy.
    - Groucho Marx
 
  
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