Prerequisite: Complete Helping Havarl’s Scientists and save the turians from the Roekarr as part of the task Turian Ark: Not Dead Yet
First, find the turian camp in the southeast corner of the Havarl map and clear it of Roekarr troops. Then, talk to Drusa in the Turian Camp in Havarl to start this task. You need to tag the debris marked in your map. To make it easier, have this task activated once you’re ready to dedicate time, preferably while doing the sidequests A Dying Planet or Recovering the Past.
Simply head to the marked locations and use your scanner to tag the parts. You can tag these parts in any order. Some of the parts are well-hidden so you’ll have to rely on the map marker and the objective indicator to know if you’re near the actual debris. The task will be completed automatically after tagging the last set of debris.