Division 21.A.61 Instructions for continued airworthiness United Kingdom Original text. Later amendments are not shown. . . . . . . . . . . . . . . . . . . . . . . . . . Division . . . . . . . . . . . . . . . . . . . . . . . . . Division ← Division 21.A.57 Division 21.A.61 Division . . . . . . . . . . . . . . . . . . . . . . . . . →