To use the jetpack (called a boost pack) in Starfield, players must first unlock the Boost Pack Training skill in the TECH skill tree by spending at least one skill point. Once unlocked, the jetpack can be used by equipping the boost pack and then pressing the jump key (space bar on PC or Y on Xbox) twice or pressing it multiple times in mid-air to boost or glide.

How to Start Using the Jetpack:

• Reach at least level 2 in the game.
• Unlock "Boost Pack Training" in the TECH skill tree using one skill point.
• Obtain a boost pack item such as the Constellation Backpack from the Constellation’s Lodge in New Atlantis or from loot.
• Equip the boost pack.
• Press the jump key (space bar on PC or Y on Xbox) twice or repeatedly to activate and maintain boosts.
• Watch the boost fuel meter on the bottom right of the screen; it reloads over time even mid-air.

Jetpack Usage Details:

• Pressing the jump button while mid-air activates the boost pack's thrusters, allowing brief flight or gliding.
• Boost fuel is consumed when boosting; wait for recharge once depleted.
• Unlocking higher ranks of the Boost Pack Training skill reduces fuel consumption and increases recharge speed, with the max rank doubling these benefits.
• Jetpacks allow players to quickly maneuver terrain, launch attacks from the air, reach higher places, and safely descend from heights.

Summary of Controls:

• Equip the boost pack.
• Press the jump key (space bar or Y) twice or repeatedly in mid-air to boost.
• Hold the jump key to maintain boost until fuel runs out.
• The jetpack can only be used if skill training is unlocked.

This mechanic helps players travel faster and access hard-to-reach places on planets, offering tactical benefits in exploration and combat.