Originally Posted by
henra
In order to justify a grounding there would have to be an indication of a general design flaw. In order to identify this they have to analyse what broke and how. I guess they are simply not at that point, yet.
For issuing an AD you need to have an idea what exactly to look for. Also this requires the identification what gave first and how. See above.
It could also simply be a maintenance issue (for the sake of the mechanics who last serviced it i surely do hope not) or indeed a Goose hitting the TR. Re the question if a Goose can damage a TR: You can bet so. Geese are veeery substantial animals (up to 15lbs !). When people are worried about a tiny DJI wiping out a TR, think about what an object 7 times as heavy will do.
I've seen a sea gull descend into a turning sea king main rotor. The resulting feather explosion was impressive. A big goose and all those lights? Unlikely IMHO.