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Understanding Tach and Hobbs Meter Numbers

These figures are critical for determining when aircraft inspections are due and how much to bill for a flight.

Tach and Hobbs meter numbers are critical for determining when certain aircraft inspections are due, when airworthiness directives need to be complied with, and how much the customer will be billed for the flight. [Credit: Meg Godlewski]
Gemini Sparkle

Key Takeaways:

“Did you check the tach and the Hobbs numbers?”

I wish I had a dollar for every time I was asked this, or asked someone else this. These numbers are critical for determining when certain aircraft inspections are due, when airworthiness directives (ADs) need to be complied with, and how much the customer will be billed for the flight. 

Meg Godlewski

Meg Godlewski has been an aviation journalist for more than 24 years and a CFI for more than 20 years. If she is not flying or teaching aviation, she is writing about it. Meg is a founding member of the Pilot Proficiency Center at EAA AirVenture and excels at the application of simulation technology to flatten the learning curve. Follow Meg on Twitter @2Lewski.

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