Plot hole?

Okay, it's been a long time since I've watched season 1, so I could be remembering wrong. Feel free to let me know if that's the case. BUT...I was thinking about when Olivia takes Kevin to that funeral, and Kevin is talking to the widow. I think Kev tells her how he and Jack used to build model planes together and after Jack died, Kev threw them out in anger and sadness; now he regrets that. So my question is...wouldn't the planes have burnt up in the fire? I don't believe a bunch of model planes were amongst the few things Jack saved in the fire.