Visit any Parachute marker on your map or pull up Parachuting Jobs via the Jobs list on the Pause Menu to earn 2× GTA$ and RP, all week long - not to mention you'll get the Bigness Jackal Sweater for free.
If you need a nudge out of the cargo bay door, keep in mind that all Parachutes, Parachute Bags and Parachute Smoke options are free for the next seven days.

