Skip Miller Final Approach PoA Supporter Joined Feb 22, 2005 Messages 5,805 Location New York City Display Name Display name: Skip Miller Jul 19, 2014 #41 evapilotaz said: Let me get this straight. Everytime I turn on the Master Switch in my FBO rented C172 the Hobbs is ticking over? Click to expand... Depends. Many installations include an oil pressure switch, so that Master on/engine off won't run the Hobbs. Know your plane. -Skip
evapilotaz said: Let me get this straight. Everytime I turn on the Master Switch in my FBO rented C172 the Hobbs is ticking over? Click to expand... Depends. Many installations include an oil pressure switch, so that Master on/engine off won't run the Hobbs. Know your plane. -Skip