305.29 (1) Subject to subsections (2) to (4), the operator of a heliport shall establish the following obstacle limitation surfaces in accordance with the applicable heliport standard for a non-instrument, non-precision or precision FATO and meet the special requirements for the surfaces and any obstacles that may affect them, set out in the applicable heliport standard:

(vi) obstacle limitation surfaces, obstacle-free zones, missed approach design criteria, obstacle clearance for a CAT II or CAT III precision approach, and obstacle clearance for a go-around and a rejected landing,

(4) The operator of an H2 heliport shall ensure that the heliport meets the special requirements for obstacle limitation surfaces for non-instrument FATOs set out in the applicable heliport standard for an H2 heliport in respect of approach or take-off surfaces.

(2) The operator of an H1 heliport shall ensure that the heliport meets the special requirements for obstacle limitation surfaces for non-instrument FATOs set out in the applicable heliport standard for an H1 heliport in respect of approach or take-off surfaces.

6. If the institution fails to submit a revised recovery plan, or if the competent authority determines that the revised recovery plan does not adequately remedy the deficiencies or potential impediments identified in its original assessment, and it is not possible to adequately remedy the deficiencies or impediments through a direction to make specific changes to the plan, the competent authority shall require the institution to identify within a reasonable timeframe changes it can make to its business in order to address the deficiencies in or impediments to the implementation of the recovery plan.

Where an airship is used at an airport, or certified aerodrome, particular attention must be paid to the requirements for obstacle limitation surfaces, OLS, around the airport, as the airship itself could become an obstacle depending on its parking position.