Moving some print material

I have decided to move some of the training materials to

In order to cover the costs of this site, users can now download the Understanding GACAR 117 instructional document as a kindle readable document, or order a hard copy from Amazon.





Understanding GACAR PART 117 – A Generic Interpretation

The intention of this site is to gather information, so the part 121 carriers conducting operations under part 117 have a reference point towards the safe application of the regulations.

Readers are encouraged to:

  • Add any questions should any information be unclear
  • Point out problems with interpretations being presented
  • Advise of any missing information


None of these interpretations are endorsed, or approved by the GACA.  Always check the approved OPSPEC and Operations Manual.