Part 139 (Aerodromes) Manual of Standards 2019
Part 21LIGHT AIRCRAFT TIE-DOWN FACILITIES
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CHAPTER 21 LIGHT AIRCRAFT TIE-DOWN FACILITIES
21.01 Tie-down facilities
(1) An aerodrome operator may provide tie-down facilities at an aerodrome only if they are of a sufficient strength to securely hold down the aircraft type for which they are provided.
Note CASA recommends that the design of the tie-down facilities should be determined in consultation with an engineering consultant or manufacturer of the anchor system.
(2) Tie-down facilities:
(a) must be fixed to the ground using embedded anchors; and
(b) must not be left loose on the surface of the aerodrome.
(3) For subsection (2) anchors must be:
(a) flush with the surface wherever possible; and
(b) not more than 25 mm above ground level.