Very low frequency hum, like the sound a diesel vehicle would do from a distance before getting too close, but constant all the time. I can hear the noise better when it is completely silent…
both described a low hum · 142 km away
Meurthe-et-Moselle, France · 2015-09-11 · from the GEIPAN archive
On September 11, 2015, around 3 a.m., two people in their car are intrigued by a white luminous phenomenon in the sky. The witnesses stop, and the object changes direction while emitting a humming sound. The witness takes three photos. Only one testimony will be collected. The case contains elements of strangeness. The stable luminous ball in the sky eventually moves and leaves with a humming sound. There is no radar recording. One hypothesis could be a helicopter maneuvering (not seen by radar due to low altitude), even though this remains surprising at 3 a.m. in open countryside and without the knowledge of the local gendarmerie. Furthermore, the case contains elements of inconsistency in the testimony, the first being that the witness did not follow up on repeated requests for meetings for an on-site investigation. Previously, he had also not responded to requests for clarification on the positions of the UAP in the sky, nor to the request for testimony from the witness's spouse, who was also present in the vehicle. An on-site investigation would have made it possible to complete the testimony and perhaps resolve the elements of strangeness. Consequently, GEIPAN classifies it as C: no response from the witness.
What stood out: a low hum
Very low frequency hum, like the sound a diesel vehicle would do from a distance before getting too close, but constant all the time. I can hear the noise better when it is completely silent…
both described a low hum · 142 km away
On October 3, 1978, at around 2 a.m., a person on a moped is startled by a strong glow above a woods. The witness then sees a cigar-shaped object, red-orange in color, surrounded by bright g…
both described a low hum · 153 km away
On July 1, 2014 at 10 p.m., a witness, awakened by a noise, observed through his window a triangular-shaped craft with three white lights at each corner and a red light in the center. A humm…
both described a low hum · 161 km away
Pulsing bass-sound. Sounds like there is a Party going on in the distance. Sometimes like a diesel engine in the distance or a humming refrigerator. Sometimes pulsing like a slow morse code.…
both described a low hum · 187 km away
continuous low-frequency sound. First I thought it was the neighboor's ventilation or so but then cannot hear it if I press my ear on the wall. I noticed I can mostly hear it from the right …
both described a low hum · 236 km away
Like a constant low-frequency humming noise, like an idling diesel engine at around 67 Hz. Quite often very invasive. The local environmental authorities ran some audio recording with a clas…
both described a low hum · 255 km away
A witness reports successive observations on January 6 and 7, then February 25 and 26, 2017: he observes colored phenomena moving in the sky or near the ground. The observations are long (fr…
the accounts read alike, found by meaning rather than by shared details
On May 3, 2009 at around 10:15 PM, a witness is intrigued by the silent passage above their home of an object. White flashing lights at each corner outline, for the witness, a dark triangula…
the accounts read alike, found by meaning rather than by shared details
On Sunday, January 31, 2016, at around 6:45 p.m., a witness observes in the sky a set of white lights evoking halogen lights and forming a motionless bar. No noise is heard. The phenomenon q…
the accounts read alike, found by meaning rather than by shared details
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This is an official case file of GEIPAN, the French space agency's unidentified aerospace phenomena office, machine translated from French. The original text and the full investigation file are at geipan.fr. We reproduce it with thanks and remove anything on request.