Hour meter

Definitions

• An instrument installed in many aircraft to show the actual number of hours the engine has operated.
• An instrument installed in many aircraft to show the actual number of hours the engine has operated. The hour meter is an electrical clock that starts when the engine oil pressure builds up, and runs until the engine is shut down and the oil pressure drops to zero.

References

• Powered Parachute Flying Handbook, Federal Aviation Administration, 2007
• Weight-Shift Control Aircraft Flying Handbook, Federal Aviation Administration, 2008