26th - Adamastor launching from Chukchan
27th - Report about Alien activity from Carver was send
28th - ???
29th - Adamastor reach LP
30th - Adamastor reach Carver`s site
31th - Adamastor jump from HIP 69000 and becomes a ghost ship; Carver`s escape sidewinder crashing
Just to clarify, the Carver logs are just private memos on base, he isnt sending them, Azimuth already knows about the crashed alien shiip and artifact. On the 27th, Carver at survey base is informed not to send any more messages and to await the arrival of the Adamastor which was by that time a day into its journey "under a private flag" I assume then the clandestine mission, if not exact co-ordinates, by the ships captain is known from the outset
The LP is certainly then just a navigation point, it "updates the route" and not a mission giver. The LP is in a different direction and twice the distance away. The company certainly knows where the geological survey base is as they are paying for it. Such an obstrufaction highlights the highest levels of secrecy, confusing agents from other factions and governments about where the ship is going, originally plots course toward Bernards Loop and far from the Bubble its true destination is programmed using as of 3111 "top-of-the-line" encryption. It would explain why the survey base and the ship were hidden for so long until the Adamastor floated back into Chukchan 200 years later.
The missing 28th Log would be part of its journey to the LP, without it we can't located the LP, this is filled in by the local systems news about the Private Detective uncovering further log records of the original flight plan. I dont think there is anything more to reveal about the "original flight plan", the 28th or the route to the LP as the ships mission and destination was already known at the top level at Azimuth and now 200 years later by us.
The long route between the LP and Coalsack, possibly something there, but as said everything was known by then, the journey span is curious but does it drive the story? Not convinced. Dont think they would need another LP here. The story surely starts at the Coalsack which we already discovered from the binary data clue.
However I think the LP encrypted message is either giving information about both pickup and drop off points (seems to be enough data in there) or its telling as about another LP between Coalsack and a plotted line intersecting with HIP6900, it smells right that they would try and obstrusifcate the finaly drop off point for the mystery cargo, the mentioned secure facility would have to be kept top secret and another navigation waypoint change outside of the bubble would help here. I dont believe they would bring such a risky mystery artifact back to HQ in a policed system like Chukchan.
With the inablity to decrypt the nav data. I might check out the 75ly red line from HIP 69200 again (HIP 69200=295ly from Musca Dark Region, so 370-295= 75ly). I also still think there might be more crashed sidewinders lying about after the abandoning ship moment.