1152. Review of exemptions.

1152.     Review of exemptions.

The Civil Aviation Authority ('CAA')1 may, if it thinks fit, provisionally suspend any exemption from the emissions certification requirements2 pending inquiry into or consideration of the case3; and, after sufficient ground being shown to its satisfaction after due inquiry, it may revoke, suspend or vary any such exemption4. Where an exemption is revoked, suspended or varied, the holder or any person having the possession or custody of it must surrender it to the CAA within a reasonable time after being required to do so5. The breach of