Yes you can safely land anywhere on pavement on an airbase, port, v-base, town, or carrier (but NOT the destroyer).
You CANNOT land in a factory, city, or HQ.
I have a feeling that you shot up the Hurri, and he crashlanded in the field, but did not "tower out". If he had you would have gotten a kill (or at least an Assist) notification. I think more than likely he just sat in his plane, giving you ample time to land or get killed before he towered out... to keep you from getting the kill. Perhaps he "pinged" you during the fight, and he's hoping that maybe you'll crash or something so he can get the kill.
I've done this a couple times myself, so I understand it.
Now when you landed in the Factory, it was not a safe spot, so you ended up with a Ditch. Any landing that is not successful will credit the kill to whoever gave you the most damage. (You can get a ditch and be "killed" at the same time).
I've gotten many kills by pinging a plane once or twice and watching it fly into auto ack fire. The auto ack kills it, but I get awarded the kill because I was the only 'person' who did any damage to it.
Make sense?