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The '''Hostile Action Displacement System''', or '''HADS''', ([[TV]]: [[Cold War (TV story)|Cold War]]) was one of the defence mechanisms of [[the Doctor's TARDIS]]. When the outer shell of the vessel came under attack, the unit dematerialised the TARDIS and rematerialised it a short distance away after the attacker had gone, in a safer locale. ([[TV]]: ''[[The Krotons (TV story)|The Krotons]]'') However, another function of this was a "dispersal" instead of a "displacement", which would allow for the TARDIS to appear to actually be blown apart, but in fact remaining intact in various pieces. ([[TV]]: ''[[The Witch's Familiar (TV story)|The Witch's Familiar]]'')
The '''Hostile Action Displacement System''', also known as '''HADS''' ([[TV]]: {{cs|Cold War (TV story)}}) or simply the '''displacement system''', ([[COMIC]]: {{cs|Liberation of the Daleks (comic story)}}) was one of the defence mechanisms of [[the Doctor's TARDIS]]. When the outer shell of the vessel came under attack, the unit dematerialised the TARDIS and rematerialised it a short distance away after the attacker had gone, in a safer locale. ([[TV]]: {{cs|The Krotons (TV story)}}) However, another function of this was a '''"dispersal system"''' instead of its usual '''"displacement system"''', which would allow for the TARDIS to appear to actually be blown apart, but in fact remaining intact in various pieces with the shield still functional in its original position. ([[TV]]: {{cs|The Witch's Familiar (TV story)}})  


The HADS had to be manually set, and [[the Doctor]] often forgot to do so. ([[PROSE]]: ''[[The Krotons (novelisation)|The Krotons]]'')
The HADS had to be manually set, and [[the Doctor]] often forgot to do so. ([[PROSE]]: {{cs|The Krotons (novelisation)}}) It could also be turned back on automatically by the TARDIS's [[regeneration]]. ([[TV]]: {{cs|Wild Blue Yonder (TV story)}})


When testing the ship after his [[exile on Earth]] had ended, the [[Third Doctor]] briefly lost the TARDIS when the HADS was triggered by a hailstorm, the Doctor noting to [[Jo Grant]] in embarrassment after they rediscovered the ship that the setting for the HADS was slightly too high. ([[PROSE]]: ''[[The Suns of Caresh (novel)|The Suns of Caresh]]'')
== History ==
While on the [[Planet (The Krotons)|Gond planet]], the [[Second Doctor]] activated the HADS before leaving the TARDIS with [[Zoe Heriot]]. The system activated when it was attacked by a [[Kroton (species)|Kroton]]'s dispersion jet, though deactivated when the mist cleared and the Kroton had left. ([[TV]]: {{cs|The Krotons (TV story)}}) Later in his travels, the TARDIS used the HADS again in [[1944]] when the chateau the ship had been transported to by Nazi soldiers was bombed, with the TARDIS returning to the location nearby where it had initially landed. ([[AUDIO]]: {{cs|Operation Werewolf (audio story)}})


While stuck on [[Earth]] and attempting to avoid meeting himself, the [[Fifth Doctor]] engaged the HADS to move the TARDIS. ([[AUDIO]]: ''[[The Mutant Phase (audio story)|The Mutant Phase]]'')
When testing the ship after his [[exile on Earth]] had ended, the [[Third Doctor]] briefly lost the TARDIS when the HADS was triggered by a hailstorm, the Doctor noting to [[Jo Grant]] in embarrassment after they rediscovered the ship that the setting for the HADS was slightly too high. ([[PROSE]]: {{cs|The Suns of Caresh (novel)}})


The Fifth Doctor had [[General]] [[Tillington]] fire [[laser]]s at the partially-materialised TARDIS in order to trigger the HADS as part of his plan to defeat the [[Dalek]]s. ([[AUDIO]]: ''[[Renaissance of the Daleks (audio story)|Renaissance of the Daleks]]'')
While stuck on [[Earth]] and attempting to avoid meeting himself, the [[Fifth Doctor]] engaged the HADS to move the TARDIS. ([[AUDIO]]: {{cs|The Mutant Phase (audio story)}})


{{O'Mara|c}} was able to capture the Doctor's TARDIS in a [[tractor beam]] because the [[Sixth Doctor]] had neglected to set the HADS. ([[PROSE]]: ''[[Time and the Rani (novelisation)|Time and the Rani]]'')
The Fifth Doctor had [[General]] [[Tillington]] fire [[laser]]s at the partially-materialised TARDIS in order to trigger the HADS as part of his plan to defeat the [[Dalek]]s. ([[AUDIO]]: {{cs|Renaissance of the Daleks (audio story)}})


The system triggered when the TARDIS was struck by cannon fire in [[1854]], which displaced the [[outer plasmic shell]]. ([[AUDIO]]: ''[[The Angel of Scutari (audio story)|The Angel of Scutari]]'')
{{O'Mara|c}} was able to capture the Doctor's TARDIS in a [[tractor beam]] because the [[Sixth Doctor]] had neglected to set the HADS. ([[PROSE]]: {{cs|Time and the Rani (novelisation)}})


[[Ace]] activated the HADS on instructions from the [[Seventh Doctor]], moving the TARDIS from [[Haiti]]'s Presidential Palace to the university. ([[PROSE]]: ''[[White Darkness (novel)|White Darkness]]'')
The system triggered when the TARDIS was struck by cannon fire in [[1854]], which displaced the [[outer plasmic shell]]. ([[AUDIO]]: {{cs|The Angel of Scutari (audio story)}})


The HADS activated itself when two [[Zygon]]s tried to steal the TARDIS. ([[PROSE]]: ''[[The Bodysnatchers (novel)|The Bodysnatchers]]'')
The HADS triggered in Lanyon Moor in the year 2000, to avoid the psionic threat of [[Sancreda]]. ([[AUDIO]]: ''[[The Spectre of Lanyon Moor (audio story)|The Spectre of Lanyon Moor]]'')  


The HADS activated again when [[temporal corrosion]] on the [[SS Batavia|SS ''Batavia'']] threatened the TARDIS, sending [[Charley Pollard]] from [[1 January]] [[2008]] to [[15 January]] [[1942]]. It was triggered again when temporal corrosion spreading through a [[Cyber-ship]] in [[500002]] came near the TARDIS, inadvertently stranding Charley there in the process. ([[AUDIO]]: ''[[The Girl Who Never Was (audio story)|The Girl Who Never Was]]'')
[[Ace]] activated the HADS on instructions from the [[Seventh Doctor]], moving the TARDIS from [[Haiti]]'s Presidential Palace to the university. ([[PROSE]]: {{cs|White Darkness (novel)}})


After a particularly violent crash landing, the TARDIS used the HADS to move itself through time as well as space, appearing several days later. ([[PROSE]]: ''[[Dead of Winter (novel)|Dead of Winter]]'')
The HADS activated itself when two [[Zygon]]s tried to steal the TARDIS. ([[PROSE]]: {{cs|The Bodysnatchers (novel)}})


The [[Tenth Doctor]] tried to activate the HADS after [[Finn Dargo]] had hacked [[Emergency Program One]] and attempted to arrest the TARDIS' occupants. The move allowed the TARDIS to materialise in an unexpected place in Dargo's ship, giving [[Majenta Pryce]] a slight advantage over Dargo's [[Intersol]] team. ([[COMIC]]: ''[[The Crimson Hand (comic story)|The Crimson Hand]]'')
The HADS activated again when [[temporal corrosion]] on the [[SS Batavia|SS ''Batavia'']] threatened the TARDIS, sending [[Charley Pollard]] from [[1 January]] [[2008]] to [[15 January]] [[1942]]. It was triggered again when temporal corrosion spreading through a [[Cyber-ship]] in [[500002]] came near the TARDIS, inadvertently stranding Charley there in the process. ([[AUDIO]]: {{cs|The Girl Who Never Was (audio story)}})


While fiddling with various settings, the [[Eleventh Doctor]] re-enabled the HADS in time for it to activate and leave the Doctor and [[Clara Oswald]] in a sinking [[submarine]] near the [[North Pole]] in [[1983]]. It reappeared a short while later, but at the [[South Pole]] instead of the North Pole. ([[TV]]: ''[[Cold War (TV story)|Cold War]]'') This event would later be referenced by Clara when the [[Twelfth Doctor]] assured her that the TARDIS would "turn up somewhere" after the space shuttle it had materialised in fell into a canyon. ([[TV]]: ''[[Kill the Moon (TV story)|Kill the Moon]]'')
After a particularly violent crash landing, the TARDIS used the HADS to move itself through time as well as space, appearing several days later. ([[PROSE]]: {{cs|Dead of Winter (novel)}})


When the [[Dalek]]s attempted to destroy the TARDIS, ([[TV]]: ''[[The Magician's Apprentice (TV story)|The Magician's Apprentice]]'') the HADS activated making it look like it had been destroyed, but the Twelfth Doctor later rematerialised the TARDIS using his [[sonic sunglasses]], summoning pieces of it from all around the room; this action was called the "Hostile Action ''Dispersal'' System". ([[TV]]: ''[[The Witch's Familiar (TV story)|The Witch's Familiar]]'')
The [[Ninth Doctor]] mentions that the HADS hasn't worked for a while by the time he met the Niners, the peaceful descendents of the [[Sontaran]]s. ([[AUDIO]]: {{cs|Salvation Nine (audio story)}}
 
The [[Tenth Doctor]] tried to activate the HADS after [[Finn Dargo]] had hacked [[Emergency Program One]] and attempted to arrest the TARDIS's occupants. The move allowed the TARDIS to materialise in an unexpected place in Dargo's ship, giving [[Majenta Pryce]] a slight advantage over Dargo's [[Intersol]] team. ([[COMIC]]: {{cs|The Crimson Hand (comic story)}})
 
While fiddling with various settings, the [[Eleventh Doctor]] re-enabled the HADS in time for it to activate and leave the Doctor and [[Clara Oswald]] in a sinking [[submarine]] near the [[North Pole]] in [[1983]]. It reappeared a short while later, but at the [[South Pole]] instead of the North Pole. ([[TV]]: {{cs|Cold War (TV story)}}) This event would later be referenced by Clara when the [[Twelfth Doctor]] assured her that the TARDIS would "turn up somewhere" after the space shuttle it had materialised in fell into a canyon. ([[TV]]: {{cs|Kill the Moon (TV story)}})
 
When the [[Dalek]]s attempted to destroy the TARDIS, ([[TV]]: {{cs|The Magician's Apprentice (TV story)}}) the HADS activated making it look like it had been destroyed, but the Twelfth Doctor later rematerialised the TARDIS using his [[sonic sunglasses]], summoning pieces of it from all around the room; this action was called the "Hostile Action ''Dispersal'' System". ([[TV]]: {{cs|The Witch's Familiar (TV story)}})
 
The [[Fourteenth Doctor]] reasoned that the displacement system was responsible for taking the TARDIS out of the collapsing [[66-scape]] and into the [[main concourse]] of the [[Dalek Dome]]. ([[COMIC]]: {{cs|Liberation of the Daleks (comic story)}})
 
At some point, the Doctor deactivated the HADS because it had once gotten him stuck in orbit for three years and the Doctor reasoned that he would never be able to land with it on. ([[TV]]: {{cs|Wild Blue Yonder (TV story)}})
 
After [[Donna Noble]] spilt coffee on the TARDIS console of the [[Fourteenth Doctor]], ([[TV]]: {{cs|The Star Beast (TV story)}}) the badly damaged TARDIS landed them on [[Spaceship (Wild Blue Yonder)|a spaceship]] at the [[edge of the universe]]. The Doctor triggered the TARDIS's regeneration with [[Fourteenth Doctor's sonic screwdriver|his sonic screwdriver]], but accidently reactivated the HADS as well. Due to the danger of the [[not-thing]]s, the TARDIS took off on its own. As the ship [[self-destruct]]ed, the TARDIS returned, able to tell that the not-things wouldn't be able to stop the self-destruct in time, thus ending the hostile action. ([[TV]]: {{cs|Wild Blue Yonder (TV story)}})
 
== Other TARDISes ==
 
Drax's [[TARDIS]] had a HADS, which was manually triggered when the vessel came under fire from [[Skyrider]] gunships. ([[PROSE]]: {{cs|Search for the Doctor (novel)}})


== Behind the scenes ==
== Behind the scenes ==
According to the ''[[Make Your Own Adventure with Doctor Who]]'' novel, ''[[Search for the Doctor (novel)|Search for the Doctor]]'', [[Drax]]'s TARDIS was shown to have a HADS, which was manually triggered when the vessel came under fire. As the ''Make Your Own Adventure'' series has multiple outcomes and no mechanism of determining the "right" outcome, this Wiki does not consider the novel a [[Tardis:Valid sources|valid source]].


Likewise, the webcast ''[[Stealing Series 9 Scripts (webcast)|Stealing Series 9 Scripts]]'' is not considered a valid source by this Wiki, but features another use of the HADS: this time, it is one of the many defence systems placed by [[Steven Moffat]] on his underground "secret writing lair" below [[221B Baker Street]].
The webcast ''[[Stealing Series 9 Scripts (webcast)|Stealing Series 9 Scripts]]'' is not considered a [[Tardis:Valid sources|valid source]] by this Wiki, but features a use of the HADS: it is one of the many defence systems placed by [[Steven Moffat]] on his underground "secret writing lair" below [[221B Baker Street]].


[[Category:TARDIS]]
[[Category:TARDIS]]

Latest revision as of 17:20, 16 November 2024

The Hostile Action Displacement System, also known as HADS (TV: Cold War [+]Loading...["Cold War (TV story)"]) or simply the displacement system, (COMIC: Liberation of the Daleks [+]Loading...["Liberation of the Daleks (comic story)"]) was one of the defence mechanisms of the Doctor's TARDIS. When the outer shell of the vessel came under attack, the unit dematerialised the TARDIS and rematerialised it a short distance away after the attacker had gone, in a safer locale. (TV: The Krotons [+]Loading...["The Krotons (TV story)"]) However, another function of this was a "dispersal system" instead of its usual "displacement system", which would allow for the TARDIS to appear to actually be blown apart, but in fact remaining intact in various pieces with the shield still functional in its original position. (TV: The Witch's Familiar [+]Loading...["The Witch's Familiar (TV story)"])

The HADS had to be manually set, and the Doctor often forgot to do so. (PROSE: The Krotons [+]Loading...["The Krotons (novelisation)"]) It could also be turned back on automatically by the TARDIS's regeneration. (TV: Wild Blue Yonder [+]Loading...["Wild Blue Yonder (TV story)"])

History[[edit] | [edit source]]

While on the Gond planet, the Second Doctor activated the HADS before leaving the TARDIS with Zoe Heriot. The system activated when it was attacked by a Kroton's dispersion jet, though deactivated when the mist cleared and the Kroton had left. (TV: The Krotons [+]Loading...["The Krotons (TV story)"]) Later in his travels, the TARDIS used the HADS again in 1944 when the chateau the ship had been transported to by Nazi soldiers was bombed, with the TARDIS returning to the location nearby where it had initially landed. (AUDIO: Operation Werewolf [+]Loading...["Operation Werewolf (audio story)"])

When testing the ship after his exile on Earth had ended, the Third Doctor briefly lost the TARDIS when the HADS was triggered by a hailstorm, the Doctor noting to Jo Grant in embarrassment after they rediscovered the ship that the setting for the HADS was slightly too high. (PROSE: The Suns of Caresh [+]Loading...["The Suns of Caresh (novel)"])

While stuck on Earth and attempting to avoid meeting himself, the Fifth Doctor engaged the HADS to move the TARDIS. (AUDIO: The Mutant Phase [+]Loading...["The Mutant Phase (audio story)"])

The Fifth Doctor had General Tillington fire lasers at the partially-materialised TARDIS in order to trigger the HADS as part of his plan to defeat the Daleks. (AUDIO: Renaissance of the Daleks [+]Loading...["Renaissance of the Daleks (audio story)"])

The Rani was able to capture the Doctor's TARDIS in a tractor beam because the Sixth Doctor had neglected to set the HADS. (PROSE: Time and the Rani [+]Loading...["Time and the Rani (novelisation)"])

The system triggered when the TARDIS was struck by cannon fire in 1854, which displaced the outer plasmic shell. (AUDIO: The Angel of Scutari [+]Loading...["The Angel of Scutari (audio story)"])

The HADS triggered in Lanyon Moor in the year 2000, to avoid the psionic threat of Sancreda. (AUDIO: The Spectre of Lanyon Moor)

Ace activated the HADS on instructions from the Seventh Doctor, moving the TARDIS from Haiti's Presidential Palace to the university. (PROSE: White Darkness [+]Loading...["White Darkness (novel)"])

The HADS activated itself when two Zygons tried to steal the TARDIS. (PROSE: The Bodysnatchers [+]Loading...["The Bodysnatchers (novel)"])

The HADS activated again when temporal corrosion on the SS Batavia threatened the TARDIS, sending Charley Pollard from 1 January 2008 to 15 January 1942. It was triggered again when temporal corrosion spreading through a Cyber-ship in 500002 came near the TARDIS, inadvertently stranding Charley there in the process. (AUDIO: The Girl Who Never Was [+]Loading...["The Girl Who Never Was (audio story)"])

After a particularly violent crash landing, the TARDIS used the HADS to move itself through time as well as space, appearing several days later. (PROSE: Dead of Winter [+]Loading...["Dead of Winter (novel)"])

The Ninth Doctor mentions that the HADS hasn't worked for a while by the time he met the Niners, the peaceful descendents of the Sontarans. (AUDIO: Salvation Nine [+]Loading...["Salvation Nine (audio story)"]

The Tenth Doctor tried to activate the HADS after Finn Dargo had hacked Emergency Program One and attempted to arrest the TARDIS's occupants. The move allowed the TARDIS to materialise in an unexpected place in Dargo's ship, giving Majenta Pryce a slight advantage over Dargo's Intersol team. (COMIC: The Crimson Hand [+]Loading...["The Crimson Hand (comic story)"])

While fiddling with various settings, the Eleventh Doctor re-enabled the HADS in time for it to activate and leave the Doctor and Clara Oswald in a sinking submarine near the North Pole in 1983. It reappeared a short while later, but at the South Pole instead of the North Pole. (TV: Cold War [+]Loading...["Cold War (TV story)"]) This event would later be referenced by Clara when the Twelfth Doctor assured her that the TARDIS would "turn up somewhere" after the space shuttle it had materialised in fell into a canyon. (TV: Kill the Moon [+]Loading...["Kill the Moon (TV story)"])

When the Daleks attempted to destroy the TARDIS, (TV: The Magician's Apprentice [+]Loading...["The Magician's Apprentice (TV story)"]) the HADS activated making it look like it had been destroyed, but the Twelfth Doctor later rematerialised the TARDIS using his sonic sunglasses, summoning pieces of it from all around the room; this action was called the "Hostile Action Dispersal System". (TV: The Witch's Familiar [+]Loading...["The Witch's Familiar (TV story)"])

The Fourteenth Doctor reasoned that the displacement system was responsible for taking the TARDIS out of the collapsing 66-scape and into the main concourse of the Dalek Dome. (COMIC: Liberation of the Daleks [+]Loading...["Liberation of the Daleks (comic story)"])

At some point, the Doctor deactivated the HADS because it had once gotten him stuck in orbit for three years and the Doctor reasoned that he would never be able to land with it on. (TV: Wild Blue Yonder [+]Loading...["Wild Blue Yonder (TV story)"])

After Donna Noble spilt coffee on the TARDIS console of the Fourteenth Doctor, (TV: The Star Beast [+]Loading...["The Star Beast (TV story)"]) the badly damaged TARDIS landed them on a spaceship at the edge of the universe. The Doctor triggered the TARDIS's regeneration with his sonic screwdriver, but accidently reactivated the HADS as well. Due to the danger of the not-things, the TARDIS took off on its own. As the ship self-destructed, the TARDIS returned, able to tell that the not-things wouldn't be able to stop the self-destruct in time, thus ending the hostile action. (TV: Wild Blue Yonder [+]Loading...["Wild Blue Yonder (TV story)"])

Other TARDISes[[edit] | [edit source]]

Drax's TARDIS had a HADS, which was manually triggered when the vessel came under fire from Skyrider gunships. (PROSE: Search for the Doctor [+]Loading...["Search for the Doctor (novel)"])

Behind the scenes[[edit] | [edit source]]

The webcast Stealing Series 9 Scripts is not considered a valid source by this Wiki, but features a use of the HADS: it is one of the many defence systems placed by Steven Moffat on his underground "secret writing lair" below 221B Baker Street.

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