Return to the Kellion and run Diagnostics.
Leave through the door leading to the Flight Lounge and get through the first door to your right. Going forward you will reach the elevator.
Go straight, turn left and prepare to be attacked by two necromorphs.
Enter the Flight Lounge and proceed to the hangar we landed in. On your way you will find a few crates worth smashing - you weren't able to do that when you first got here. Remember to use the Save station in the lounge.
Our path to the ship is blocked by a single crawling necromorph. Deal with it, enter the ship and start diagnostics.
... which turns out to cause a serious malfunction. Get out of the burning ship and prepare to dispatch a horde of necromorphs - after you'll deal with them you'll receive a new objective.
Get to the medical deck
Get back towards the Lounge and enter the room to the tram station. There are two crates in front of the elevator, and the toilet to the right holds a Large med pack. Use the elevator.
There's a Store here, and I suggest you buy a Level 2 suit.
There's also a Work bench here. To proceed to the next chapter enter the tram and activate it.