Logging Military and Civilian Flight Hours: One Book or Two?

Here’s some guidance on combining the records and using appropriate notations.

Photo of a logbook
You may consider using more than one type or brand of logbook to diversify your data storage. [Shutterstock]
Gemini Sparkle

Key Takeaways:

  • Pilots are not required to keep separate logbooks for civilian and military flight hours, though many choose to do so for organizational clarity.
  • Combined logging can be done in a single logbook using "MIL" or "CIV" notations or by dedicating specific sections.
  • A key difference is that civilian flight time is typically logged from engine start to shutdown, while military time is from takeoff to touchdown, necessitating conversion or explanation for civilian purposes.
  • Regardless of the logbook choice, it's important to properly log PIC time and dual instruction where appropriate.
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Question: I had a civilian pilot certificate with approximately 100 hours when I entered the military as a pilot. Now I have both military hours and civilian flight hours. Do I need two logbooks, or can these hours be logged in the same place?

Answer: According to the former and current military pilots I have flown with, you do not necessarily need to keep separate logbooks for your civilian and military hours. However, many pilots do this just to avoid confusion. Separate logbooks also make it easier to break out your civilian hours versus military ones.

That being said, some pilots log their hours in one logbook with the notation “MIL” or “CIV.” Others have one part of the logbook for military hours and another for civilian hours.

There is a difference when it comes to calculating flight time because in the civilian world flight time is determined from engine start to shutdown, often going off the Hobbs meter.

In the military world flight time is logged from takeoff to touchdown. Be prepared to convert your military time to civilian time or to explain it to a civilian employer if need be.

In addition to hours, it is important that you log PIC time if appropriate, as well as dual instruction given in your logbooks.

Ask us anything you’ve ever wanted to know about aviation. Our experts in general aviation, flight training, aircraft, avionics, and more may attempt to answer in a future article. Email your questions here.

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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