I can imagine they are using spare cones in case of a damaged one. What wonders me, is that it happens on 3 different a/c at almost the same time.
Do the liveries of these Boeing 777 differ from each other or are there mistakes made by painting the cones before they get attached to the a/c?
Photo © Aldo Bidini
Photo © Jordi Cuadrado Borbonés
Photo © Christian Galliker
Sorry if this has been discussen before. I did a search on this (KLM B777) subject but got not hits.
I also was not sure where to post this message here in Civil Aviation or in Technical / Operations.