No, hobs time is actual, from oil pressure and master on , to open circuit at end of flight. Tach time is an RPM counter only. Tach time is almost always less than actual, particularly if not a trainer, and with CS prop, you decrease RPM in cruise. Based on my 235 experience, I'd say a 1500 tach time plane has probably 1700 to 1800 hours actual time. Peddlescoffee@xxxxxxx wrote: > Does tach time equal hours? Put another way, does 1.00 elapsed on a tach > equal 1 hour? > > Thanks, > > Murray > > - - - > Previously sent messages (archives): > //www.freelists.org/archives/pa28235/ > To unsubscribe, send an e-mail to: pa28235-request@xxxxxxxxxxxxx and put > "unsubscribe" (without the quotes) in the Subject line of the email. - - - Previously sent messages (archives): //www.freelists.org/archives/pa28235/ To unsubscribe, send an e-mail to: pa28235-request@xxxxxxxxxxxxx and put "unsubscribe" (without the quotes) in the Subject line of the email.