my mom has dreams that come true. ever sinse she she was very young. examples are- of her grandma dying (she actually died that very night) of my sister being pregnant and that it was a boy (she called my sister and asked if she was pregnant and she said, i don't know i bought a test but i didn't take it yet! -it was a boy..

but she also pretty much reads peoples minds and all that. i wouldn't say psychic.. but very intuitive.. i don't really get it. BUT my point is that even her dreams that come true they are always somehow related to her.. not just some randome thing happening but a big event.. (a birth a death) and it's a close friend, a relative etc..

possibly the date in your dream was unrelated to the plane. or the plane crashing might be symbolic for say, a tough day? I don't know but i'd be interested to read your post after tomarrow!