Palmer looks up, guessing that Furiosa means him when she's referring to a Blackthumb. He knows there's slang where she's from and that's likely a local term for "mechanic". Not a bad one, either.

This is his area of expertise. If he can get a decent survey of the ship, he can see how badly damaged it is and if any repairs would be possible. It doesn't seem like it's a trap, since the speaker seemed more frightened than anything.

That's a pretty big relief. Palmer doesn't want to deal with a trap - they will have enough issues in just surveying a downed ship and looking for survivors. He wonders if there's anyone else on board - there was at least one other passenger, the "Mistress".

"Yeah," he says, stooping to examine the ramp. He looks up to give his results to Furiosa. "It sure looks busted. I can fix it, I think, but it would be tricky in this weather. It could just break again, not even thinking about the ice damage. That looks pretty damn bad. Doing repairs outside ain't a problem, though - I've done it before for my team back home. In similar conditions, too."