Item #: SCP-XXXX

Object Class: Euclid


SCP-XXXX in its retrieval location.


One of SCP-XXXX's engines.

Special Containment Procedures:

SCP-XXXX is to be kept inside a secure storage hangar.
Containment walls must be constructed with 6 layers of Titanium-Steel alloy and an inner core of Ceramic, insulating Polyurethane foam and ██████, in order to keep it pressure-insulated and completely soundproofed. Audio recording of SCP-XXXX and its containment unit is prohibited.

A condition of vacuum must be maintained within the room at all times.
The room can be entered only through a depressurization chamber, all personnel accessing the room must wear special pressurized and soundproofed suits in order to survive into vacuum. Every authorized Foundation researcher entering the room must wait during a 60 seconds depressurization process before accessing SCP-XXXX’s room.
Only Class D personnel are allowed to enter the room when vacuum condition is suspended.
Audio recording must be turned off completely at all times in order to avoid the record of any sound that may be produced inside the containment room in the event of vacuum-sustaining systems failure.

In order to predict the manifestation of SCP-XXXX's anomalous effects, weather conditions in ██████ Airport must always be monitored.


SCP-XXXX is a Lockheed L-1011 “Tristar” jet airliner. It was recovered in ██████ Airport, Greece.
It appears to have no callsign or writings of any kind on its skin or inside the cabin, while its coloration pattern resembles the one used by ██████████████. SCP-XXXX is completely inoperable and shows signs of long-term abandonment. There are no seats inside. The aircraft was found by airport personnel in a state of decay in 20██.

The details concerning its desertion are still unknown, it's theorized that this is due to its anomalous effects. The Foundation came into contact with the aircraft when airport staff reported that most people in the airport and in the surrounding area who came into close visual or hearing contact with the aircraft had begun to disappear, only to be found, several weeks later, deceased. After further investigation regarding the phenomena, the research team discovered the disappearances to be linked to a “tinkling” or “rattling” sound produced by the moving parts inside the engines. SCP-XXXX's sound is typically the result of air currents entering the inlet and moving the engine compressor blades.
However, before this effect could be discovered, Foundation reported the loss of several Foundation researchers and airport crew members.

Foundation researchers found out that any human being who listened to the previously described sound, even indirectly (such as, but not limited to, via recording) got affected and began to display negative symptoms (anxiety, fear, insomnia).
This resulted in any subject who had been exposed to the noise, beginning to hear, regardless of distance from SCP-XXXX, the same sound within his/her head (displaying conditions regardless of gender); this is presumably caused from an unknown vibration of brain tissues.

The sound had been described as the same rattling sound of engine blades at first, starting to appear and build up in the subject’s head after some hours had elapsed from exposition.
Several days after, the noise appeared to get constant and to increase its intensity, causing the subject to stop interacting with anyone or anything.
This effect made most of interview attempts almost impossible to conduct.

Some interviewed subjects have claimed and written that once it gets constant it reaches the same noise of an active jet engine working at full regime, making it impossible for the subject to sleep, listen or even hear their own voice.

For additional information, see addendum XXXX.1.

EEG analisys had proven to be effective in tracking the noise inside a subject’s brain.
The noise continues with few or no interruptions until the subject’s brain collapses, eventually ceasing all other body functions therefore causing subject’s death.
The average lasting period of affected subjects is between 7 and 9 days before expiring.

Furthermore, regardless of the location of the aircraft, presence of wind in the airport where it was found still affects the engines, also within the vacuum containment chamber.
However, if engine blades stay still in a condition of no wind upon the retrieval location, the sound doesn’t appear to manifest, therefore the aircraft produces no effects upon subjects.

Foundation researchers had discovered that if detached from the airframe, SCP-XXXX's engines produce no anomalous effect. The same result occurs by blocking the internal parts of the engine from moving. However due to the unknown nature of the aircraft still being under analysis, engines must remain connected to it at alla times.