I replicated the fault, when i transition into cruise with exactly 1438L left in fuel I accelerate for about 30 seconds then i lose rpm and the aircraft starts to override with no engine power. after water "landing" i shutoff all ACFT systems and attempt to restart to no success.

Thank you for your report! I have managed to identify and fix the issue, and I also made some minor improvements on the side to speed and fuel & water capacity.

Recovery system doesn't work... i held a remote controller with channel 5 set and when pressing 1 nothing happens!

Did you actually turn the remote control on? you know by the green circle in your hotbar around the remote and by the fact you cant move your character anymore

Yeah, i am certain i have enabled the remote controller (i couldn't move), the channel was set to 5 and i know that on the remote control buttons are toggles. But no matter how much i press the 1 there is no reaction from the aircraft, as well as recovery indicator does not light up in the cockpit...

Ok, I have confirmed the issue, will get a fix up later today.

@ERKDRN69 Its fixed, seems the antenna just didn't have a power connection :( Thanks for your report though!

You're welcome!

Btw, i think that platform anchoring also doesn't work, even though platform sits on the ground and platform anchoring button is on, but magall stays off, and i think there should be some movement happening with those magalls, like them pivoting down or smth but that also doesn't work. As for recovery mode, now it works!

The mag locks only work when extended beyond a certain point, but I will check them again when I get the chance, they have cause me plenty of issues already during development.
But yea, when they activate, they pivot down and back up when inactive

mag-locks are fixed, thanks for the report

You're welcome!

Regarding the cruise mode, it seems extremely unstable. I think the issue is that the aircraft draws too much throttle too quickly, and it spins out of control.

Tested in all weather elements, wind or no wind. Tested at heights under 300 and above. Tested with pre-aligning destination and without, also tested with forward-travel and without. All done in Low Physics. Perhaps a higher setting is needed?

Regardless, when activating the cruise mode to fly to a destination, the aircraft throttles up quickly and almost immediately spins out of control. The rotating props also seem to self-destruct during these spin-outs, rendering the craft unrecoverable.

I've also noticed that, even when it seems to get into cruising speed and direction correctly, in just brief time something goes wrong. Either the aircraft over-corrects and begins spiraling, or one of the props self-destructs.

Aside from cruise mode, the aircraft as a whole works fantastically and performs a ton of work for me, when ship-launched. But without cruise mode, it isn't feasible for long term travel.

I'm not sure what settings can be tweaked further exactly, but perhaps the speed at which the props rotate into cruise position can be slowed down, along with the throttle ramp-up slowed down as well? As far as stability goes, gyro, whatever it is, perhaps more dampening to prevent over-corrections?

could you please check whether the issue persists when using high physics detail? It generally considered standard to use high detail, so I would like to confirm that is not the source of the issue. If it persists, I will see whether I can replicate it

In High Physics detail, the aircraft is much more stable than Low Detail, and I've actually operated cruise mode successfully a number of times. Weather doesn't generally seem to have much of an effect either way, but I have noticed that the aircraft still tends to over-correct and stall out if the destination is not pre-aligned. That aside, I've not experienced the props self-destructing either.

So yes, High Detail mostly solves the problem as long as I'm also pre-aligning the destination.