Nope, no noise at all. And the movement didn't really produce any nose down I could tell. Was just like the machine was on it's ground wheels and given a push forward. Like a lurching motion if that makes any sense? No unsecure loads in the cargo bay either, everything strapped down tight.

Didn't go anywhere today and it was the only thing in the hangar, chief engineer went over every nut and bolt and she's all good. Guessing it has to be pax shifting about, but still not letting my guard down.

I'll have a carefull look at the stab too Jack. Thanks for that.

Does this aircraft have dual control capability? Does it happen with the copilot seat occupied? Do you feel uncommanded movement in your cyclic? I have heard of aircraft with the dual control provisions having the copilot cyclic cover plastic piece missing or loose enough that a person riding in the co-pilot seat can inadvertently kick or nudge the cyclic socket where the copilot controls would be installed causing some control movement that can scare the PIC. Just throwing stuff out there.

I've had a lot of time in the 206L over the last 2 years and have noticed this on a few occassions. However, i have always thot it was a cramped pax, in the back pulling him/herself up on the seat to try and get a better seating position. It gets cramped in back when 5 pax in there. Unless theyre all midgets of course or 5 supermodels, you get the picture.
People moving around is my guess, just like Helonorth describes.

Cant say ive ever felt the fuel sloshing around enuf to bump the aircraft forward or aft?


HJ

Yeah I tracked it down to pax just shifting about. Had one big fella in and asked him to shift around "with feeling" and sure enough it replicated the motion I was feeling.

Simple enough explanation for sure, but thanks for all who put forward their thoughts. :ok:

I was flying a 206B on one of my early revenue flights and I had two big water bottles on the two window seats in the back. I seatbelted them in with shoulder straps and everything but imagine the look on my 100hr face when one of the jugs fell off the seat and banged into the ground. It was a very loud bang the machine lurched quite good haha. I almost bottomed the poll before clueing in to what happened.

From a BH friend:

Its the L model shuffle. Track it. Most likely the hub is out of center.