Some X-Factor Jean Power Stunts

In X-Factor #17, Jean levitates a falling helicopter.

Jean Grey's 80's and 90's Phoenix hints, stories and manifestations

In the Phoenix Rising storyline (The Avengers #263, Fantastic Four #286, and X-Factor #1), a mysterious cocoon is found and it is emanating powerful Phoenix energies and psychic energies.  Jean Grey hatches.  She relives her encounter with the Phoenix Force on the shuttle when she touches the Shiar Holo-Empathic Crystal.  She learns that her soul was imbued into the s Phoenix Force creating the Jean Grey-Phoenix being.  It was her humanity that defeated the Dark Phoenix.

Avengers #263.