Masrani and two troopers hunt the Indominus by helicopter .
The Indominus breaks into the park 's aviary to avoid the gunfire , releasing the pterosaurs Pteranodon and Dimorphodon that collide with the helicopter , causing Indominus to crash and killing Masrani in the process .
Masrani and two troopers hunt the Indominus by helicopter , but the Indominus breaks into the park 's aviary to avoid the gunfire , releasing the pterosaurs Pteranodon and Dimorphodon that collide with the helicopter , causing it to crash and killing Masrani in the process .