I had to delete a few blocks to enter the Cerbirus cockpit. ;)
Return to No-Signal item :
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=288920085&searchtext=

The Kodiak doors must be ''ON'' before using the reverse option and hit ''P'' to unlock/lock the doors.

Cerbirus version when is engines or OFF doors are closing LOL! They are not at a good angle to stay up when engines are OFF. ;)

No-Signal published it just before living on vacation so I'm sure he will fix it when he'll come back.

Don't forget ''Y'' turns the engines ON. ;)