A method for completeness inspection of an assembled structure to check whether said structure has all the mounted parts comprising scanning the whole assembled structure with an active ranging scanner, thus obtaining a 3D picture; obtaining a 3D model of the whole structure based on CAD data; subdividing said 3D picture into a number of smaller picture comparison areas and said 3D model into a number of smaller corresponding model comparison areas using a best fit algorithm, thus obtaining a set of final picture comparison areas and corresponding final model comparison areas; for each final model comparison area, identifying desired mounting parts located therein and searching for mounted parts in the corresponding final picture comparison area that match said desired mounting parts; and identifying the desired mounting parts, which have no matching mounted part in the final picture comparison areas, as missing from the assembled structure.