pressure face contact surface 70 and a second pressure face contact surface 72 0016 fig3 is a cross sectional view of a portion of fan assembly 12 taken along line 3 3 of fig2 fig4 is a cross sectional view of a portion of fan assembly 12 taken along line 4 4 of fig3 specifically within fig3 and 4 fan blade 30 is coupled within fan hub 24 more specifically fan blade 30 is received and secured also referred to herein as seated within a disk slot 74 defined in fan hub 24 in one embodiment fan hub 24 includes a plurality of disk slots 74 defined therein and spaced circumferentially about fan hub 24 each disk slot 74 extends at least length 64 such that each dovetail 52 is completely received therein when each fan blade dovetail 52 is seated within a respective disk slot 74 each fan blade 30 extends radially outward from fan hub 24 disk slot 74 includes a radially inner surface 76 and a portion 78 of disk slot 74 is shaped complimentary to a portion of dovetail 52 such that when dovetail 52 is seated within disk slot 74 first pressure face contact surface 70 is adjacent a first disk slot pressure surface 80 and second pressure face contact surface 72 contacts a second disk slot pressure surface 82 in the exemplary embodiment dovetail 52.