NUFORC Sighting 181017

Occurred: 2024-04-03 09:30 Local
Reported: 2024-04-03 16:54 Pacific
Duration: about 15 seconds
No of observers: 2 - Aviation Expert

Location: Geneva, IN, USA
Location details: I was driving west, on a county road north of Geneva. Gravel road.

Shape: Changing
Color: white
Estimated Size: about the size of a wind turbine blade
Viewed From: Land
Direction from Viewer: West, some 3-5 miles away.
Angle of Elevation: 30
Closest Distance: Three to five miles.
Estimated Speed: 300-400km/h

Was driving to a plumbing call when a moving object appeared in the sky.

While driving westward on a gravel county road north of Geneva, Indiana, with my trainee in the passenger seat, I observed a peculiar object emerge from the overcast clouds. Initially, it appeared to be a conventional aircraft or a part thereof, resembling the horizontal orientation of an aircraft wing or a white propeller blade from a wind turbine.

Initial Observation:

The object presented itself horizontally before it began pitching and spinning, resembling an ungoverned propeller feathering unidirectionally.
This motion lasted for approximately four seconds, during which the object exhibited a very slow descent before it abruptly halted its descent and remained stationary.

Sudden Movement:

After a brief pause, the object accelerated across the sky at an estimated speed of 300-400 km/h, maintaining an altitude of approximately 2000 meters.
It continued to spin horizontally before coming to a stop once again in the sky, where it continued its rotation.

Final Observation and Disappearance:

The object then proceeded to thin out, diminishing its visibility until it completely vanished from sight.
My trainee, initially distracted, only observed the object upon my exclamation. He confirmed the sighting, especially noting the object's spinning and subsequent disappearance.

Additional Information:

No sound was perceived from the object throughout the duration of the sighting.
The entire event spanned approximately 15 seconds from the initial sighting to the object's disappearance.

Conclusion:
The nature of the object's appearance, its uncharacteristic maneuvers, sudden acceleration, and eventual disappearance does not align with conventional aircraft or known atmospheric phenomena. The object's ability to halt its descent, accelerate to high speeds abruptly, and then vanish is particularly noteworthy, suggesting characteristics not currently attributed to known man-made or natural objects.

Posted 2024-04-27