- Flight deck and passenger cabin:
- Changes to safety/survival equipment e.g. location, installation, part number.
- Changes to soft furnishings and decorative materials e.g. dress covers, carpet, curtains, decorative laminates, paint.
- Changes to passenger seat configuration.
- Modification and repair of equipment and furnishings.
- Aircraft structures and systems:
- Installation of exterior colour schemes (liveries) and markings.