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The vertibird signal grenade is a weapon in Fallout 4.

Characteristics

Soon after throwing a vertibird signal grenade, a vertibird will appear on the horizon and track towards the Sole Survivor and land in the vicinity of the marked location, albeit not instantaneously. The player character can then board the aircraft to take control of its side-mounted minigun. Opening the Pip-Boy map and selecting a location to fast travel to will cause the vertibird to lift off and start flying to the selected location. When the vertibird has landed, the player character may exit or use the Pip-Boy map to select a different destination. Alternatively, the player character can change the destination mid-flight using the Pip-Boy map.

The grenade produces a vertical plume of orange smoke. The vertibird signal grenade can only summon a vertibird when used outside. They can be used initally only when the player character is a member of the Brotherhood of Steel. They may be used by non-Brotherhood members of the Minutemen or the Railroad only upon completion of their respective main questlines. Prior to the completing the main questline, former members of the Brotherhood can use any grenades still in their possession to summon vertibirds, but the vertibirds and occupants will be hostile, and it will not be possible to use the vertibird for fast travel.

If the Sole Survivor completes the Railroad's main questline, after a few days Drummer Boy in the Railroad HQ will say that the vertibird is ready for use, giving the Sole Survivor three signal grenades. He then informs the player character that more can be purchased from Tinker Tom. There is a similar outcome after the Minutemen ending to the main questline.

Unlike normal vertibirds and their crew, the summoned vertibird and its pilot are immune to all forms of damage, and cannot be targeted in VATS or with a Recon scope. However the player character can be harmed and killed while in the vertibird.

Variants

Locations

Notes

  • The vertibird will still come even if one defeated the BoS in the main quest. However, factions such as the Minutemen and the Institute may be hostile.
  • Temporary followers from BoS radiant quests, such as scribes and squires, won't use the vertibird.
  • Shooting creatures in the Glowing Sea while on board of a vertibird may result in these creatures chasing the vertibird. Radscorpions and mole rats may then burst from the ground upon landing.
  • Throwing the grenade at an NPC (such as a settler) will cause them to become hostile if it hits them or explodes close to them.
  • Signal grenades do not work on the Far Harbor island or in Nuka-World.
  • If the fast travel target to an area is cluttered or would be impossible to get to, the vertibird can land either time at a different area, ranging from 60+ feet to an entire cell.
  • The hidden quest ID for calling in a vertibird is VFT. It can be manipulated in the console like any other quest.
  • The grenades have a small kinetic effect on impact and on detonating, that can move corpses and other objects.
  • Signal grenades can be reverse-pickpocketed in the live state with rank 2 or higher of the Pickpocket perk. They activate normally and the activation does not cause the recipient NPC to go hostile (though the reverse pickpocketing attempt might do so).
    • This can be used as a workaround to place actual offensive grenades safely on an ally, by transferring the signal grenade first, as only the first grenade placed is live.

Gallery

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