The Civil Aviation Act

0.5 percent or more of the maxi- mum take-off mass of the aircraft, is added or removed subsequent to manufacture, unless the aircraft is weighed, and a mass and balance report is prepared and certified by an authorized person, subsequent to the installa

The Civil Aviation Act

0.5 percent of maximum take-off mass of the aircraft is added or removed, or a modification or configuration change results in a movement of the centre of gravity of less than 0.5 per cent, unless a new determination of the empty mass, and empty mass cent