New guidance on objects and structures that affect aviation safety

Page 1 of 6

Closes 1 Oct 2025

About this consultation

This consultation asks for your feedback on the draft guidance for objects and structures that affect aviation safety in Draft Multi-Part AC 139.E-01 and AC 175.E-02 v2.0.

We will ask you for:

  • personal information, such as your name, any organisation you represent, and your email address
  • your consent to publish your submission
  • your responses to the proposed changes in the guidance
  • demographic information to help us understand your interest in the guidance
  • any comments you may want to provide

Our website contains more information on making a submission and what we do with your feedback.