Evidence Explorer

The document discusses the radar data related to Japan Airlines flight 1628, which experienced uncorrelated radar signals during its flight on November 17, 1986. FAA experts analyzed the radar data and explained the phenomenon of uncorrelated targets, emphasizing that this occurrence coincided with a pilot's sighting of an unidentified object.

The document discusses the phenomenon of uncorrelated radar returns from aircraft, specifically detailing the differences between primary radar signals and secondary transponder signals.

This document is a memorandum from the Federal Aviation Administration discussing radar targets associated with JAL flight 1628 and the phenomenon of 'split images' observed during the flight.

The FAA acknowledges its lack of resources and mandate to scientifically investigate UFO sightings, specifically referencing Japan Airlines flight 1628.

This document details two incidents of unidentified air traffic sightings reported by flight crews in Alaska in January 1987. The first incident involved an Alaska Airlines Boeing 737 that detected a fast-moving target on its radar, while the second incident involved a Japan Airlines Boeing 747 pilot who reported unusual lights in front of his aircraft.

This document is a response from the FAA regarding a request for information about the unidentified traffic sighting by Japan Airlines flight 1628 on November 17, 1986. It includes an order form for obtaining materials related to the investigation.

The document discusses the phenomenon of uncorrelated radar signals, specifically the differences between primary radar returns and secondary beacon returns when tracking aircraft.

This document is a memorandum from the Federal Aviation Administration (FAA) regarding the radar images of Japan Air Lines flight 1628, which experienced intermittent radar images attributed to 'split images'. The FAA seeks clarification on this phenomenon for public communication.

The document discusses the phenomenon of uncorrelated radar signals, explaining the differences between primary and secondary radar returns and how they can indicate the presence of an aircraft.

This document discusses the analysis of radar data related to Japan Airlines flight 1628, which encountered uncorrelated radar signals during its flight on November 17, 1986. FAA experts explain the phenomenon of uncorrelated primary and beacon targets and its implications for radar tracking.

The document discusses the phenomenon of uncorrelated radar signals, specifically detailing the differences between primary radar returns and secondary beacon returns. It includes a diagram illustrating how these signals can appear on a radar screen when they do not match up in time or location.

This memorandum from the Federal Aviation Administration discusses the radar split image phenomenon observed during JAL flight 1628 on November 17, 1986. It acknowledges the interpretation provided by the Alaskan Region Air Traffic Division and includes an analysis of uncorrelated primary and beacon targets.

This document discusses the FAA's analysis of radar data related to Japan Airlines flight 1628, which reported an uncorrelated radar target during its flight on November 17, 1986. The FAA experts explained the phenomenon of uncorrelated primary and beacon targets and its implications for radar tracking.

The document discusses the phenomenon of uncorrelated radar signals, explaining how primary and secondary radar returns can occur at different times, leading to discrepancies in radar tracking of aircraft.

This document is a memorandum from the U.S. Department of Transportation's Federal Aviation Administration discussing the radar targets associated with Japan Airlines flight 1628, which experienced unusual radar phenomena on November 17, 1986. It addresses the interpretation of 'split images' on radar and includes an analysis by Dennis Simantel.

The document discusses the analysis of radar data related to Japan Airlines flight 1628, which experienced uncorrelated radar signals during its flight on November 17, 1986. FAA experts explain the phenomenon of uncorrelated primary and beacon targets and its implications for radar tracking.

The document discusses the phenomenon of uncorrelated radar signals, explaining the differences between primary and secondary radar returns and their implications for radar tracking of aircraft.

This memorandum from the FAA discusses the radar analysis related to JAL flight 1628, specifically addressing the phenomenon of 'split images' observed during the flight on November 17, 1986.

This document details two incidents of unidentified air traffic sightings reported by flight crews of Alaska Airlines and Japan Airlines in January 1987. Both sightings involved unusual radar targets that could not be visually confirmed by the pilots.

The FAA states it lacks the resources and mandate to scientifically investigate UFO sightings, including the case of Japan Airlines flight 1628. They have completed their investigation and do not intend to pursue it further.