Division 21.A.439 Production of repair parts

Parts and appliances to be used for the repair shall be manufactured in accordance with production data based upon all the necessary design data as provided by the repair design approval holder:

1. (a)

   under Subpart F; or

2. (b)

   by an organisation appropriately approved in accordance with Subpart G; or

3. (c)

   by an appropriately approved maintenance organisation.