58. Weight and balance- (1) Every aircraft shall be weighed and appropriately marked and centre of gravity determined. The weight schedule and the load sheet indicating the calculated centre of gravity position(s) relating to the required configuration(s) shall be displayed or carried on board an aircraft subject to such conditions as may be specified by the Director-General.

(2) (a) An aircraft shall not attempt to take off, fly or land at a weight in excess of the maximum permissible weight as specified in the certificate of airworthiness or as authorised by the Director-General.

(b) The load of an aircraft throughout a flight including take-off and landing shall be so distributed that the centre of gravity position of the aircraft falls within the limitations specified or approved by the Director-General :

Provided that the Director-General may, by special order in writing and subject to such conditions as may be specified in that order, exempt any aircraft from the operation of this rule.