139.—(1) Where—

(a) an appeal is brought against a decision of a planning authority to grant a permission,

(b) the appeal relates only to a condition or conditions that the decision provides that the permission shall be subject to, and

(c) the Board is satisfied, having regard to the nature of the condition or conditions, that the determination by the Board of the relevant application as if it had been made to it in the first instance would not be warranted,

then, subject to compliance by the Board with subsection (2), the Board may, in its absolute discretion, give to the relevant planning authority such directions as it considers appropriate relating to the attachment, amendment or removal by that authority either of the condition or conditions to which the appeal relates or of other conditions.

(2) In exercising the power conferred on it by subsection (1), apart from considering the condition or conditions to which the relevant appeal relates, the Board shall be restricted to considering—

F579[(a) the matters to which a planning authority shall have regard specified in paragraph (a) of subsection (2) of section 34,]

F580[(aa) in the case of the appeal of a decision of a planning authority in respect of development to which Chapter II of Part XXI applies or proposed such development, the matters referred to in paragraph (a) and the matters to which a planning authority shall have regard specified in subsection (2) of section 282,]

(b) the terms of any previous permission considered by the Board to be relevant.