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Unclassified Complete
733667-001-023-0003
National Archives and Records Administration
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85%
Credibility
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Intelligence summary
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.
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Extracted timeline
Jun 15, 1986
Document Date (year hint)
Document Date (year hint) for 733667-001-023-0003
Jun 16, 2026
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Ingestion Date for 733667-001-023-0003
Jun 16, 2026
Document Record Date
Document Record Date for 733667-001-023-0003
Jun 16, 2026
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Update Date for 733667-001-023-0003
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Full document text
1,048 characters, transcribed via OCR. Errors reflect the source scan. Compare with the original ↗
Q Memorandum
US. Department
of Transportation -
Federal Aviation
Administration
Subject! INFORMATION: Description of Radar Split Image; ane. FEB 27 I987
AAI-5 Memo of 2/5/87
Reply to
From: Manager, Airway Facilities Division, AAL-400 aun Gr
To: Public Affairs Officer, AAL-5
This letter transmits our analysis of the radar targets associated with
JAL flight 1628, on November 17, 1986, and supplements discussions we have
had regarding what has been referred to as "split images".
We concur with the interpretation provided to you by the Alaskan Region
Air Traffic Division.
The attached Analysis of Uncorrelated Primary and Beacon Targets by Dennis
Simantel covers the subject in more detail, and addresses the questions
raised in your letter.
Paul, I appreciate the team approach you have taken to more fully
understand a complex issue. The issue is an excellent example of how
"interdependent" we are. If we can provide any more information, please
do not hesitate to call.
ove Ne
David F. Morse
Attachment
JAIS93Y
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