Human-world claims below are kept separate from Fred and Visitor editorial/lore. Translation changes language, not evidence status.
ATTRIBUTED RECORD // AlienBox can establish that the cited source reports these claims; that does not independently verify the underlying event.
Witness typesmilitary radar operators, aircraft crew of Northwest 841
Sensor typesAN/CPS-1 radar
Evidence typesattributed military radar report, attributed aircraft-crew interrogation record, attributed technical commentary
A separate Fukuoka report dated 16 September 1947 describes an unidentified target estimated to travel between 840 and 900 mph at an altitude of 10,000 to 20,000 feet.
Claim #402 // ATTRIBUTED CLAIM // ATTRIBUTED // 98% extraction confidence
“reported
detection of an unidentified target at approximately 1230/1, 16
September 1947. The target was estimated to be travelling between
840 and 900 mph, altitude 10,000 to 20,000 ft.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 2; source chars 22295-32864; chunk 2 chars 22295-32864; KO 91052
The Air Defense Section assessed that the explanation for such targets might involve radiation phenomena, particularly dual reflection transmission paths.
Claim #403 // ATTRIBUTED CLAIM // ATTRIBUTED // 95% extraction confidence
“It is possible that the explanation of such
targets lies in the field of radiation phenomena, with particular
regard to dual reflection transmission paths.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 2; source chars 22295-32864; chunk 2 chars 22295-32864; KO 91052, Assessment
A separate 30 October 1947 intelligence report states that Fukuoka MEW Radar Site No. 1 detected an unidentified target at approximately 1230 on 16 September 1947, estimated at 840–900 mph and 10,000–20,000 feet altitude.
Claim #418 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“Fukuoka MEW Radar Site No. 1 (33-41N, 13 0-18E) reported
detection of an unidentified target at approximately 1230/1, 16
Sept 47. The target was estimated to be travelling between 840 and
900 mph, altitude 10,000 to 20,000 ft.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 3; source chars 32864-42184; chunk 3 chars 32864-42184, 30 October intelligence report summary paragraph 1
The 16 September target was plotted within 13 miles of Northwest Airlines flight No. 841 while four to six identified aircraft were also on the scope and plotted at normal speeds.
Claim #419 // ATTRIBUTED CLAIM // ATTRIBUTED // 98% extraction confidence
“Target plotted
within 13 miles of Northwest Airlines flight-No. 841. Four to six
identified aircraft were in the scope coincidentally with the
target and were plotted at normal speeds.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 3; source chars 32864-42184; chunk 3 chars 32864-42184, 30 October intelligence report summary paragraph 1
The Air Defense Section of Headquarters assessed that radiation phenomena, particularly dual reflection transmission paths, might explain such targets.
Claim #420 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“It is possible that the explanation of such targets lies in the
field of radiation phenomena, with particular regard to dual reflection transmission paths”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 3; source chars 32864-42184; chunk 3 chars 32864-42184, 30 October intelligence report paragraph 2
The source reports that the target was tracked through its entire course on the low beam of an AN/CPS—1 radar.
Claim #423 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“Target was tracked through entire course on low beam of an AN/CPS—1.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, COMMENTS paragraph 2c
The final report states that on 16 September 1947 at approximately 1230, a plot was picked up by Pfc Dwight L. Price on the low beam at 98 miles and 40 degrees from Site No. 1.
Claim #424 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“On 16 Sept 1947 at approximately 1230 a plot was picked up by Pfc Dwight L. Price on low beam at 98 miles 40 deg from Site No. 1, Cames control.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, final report item 1
The final report states that the target passed 13 miles off the port wing of Northwest 841 and had an estimated air speed of 840 to 900 miles per hour.
Claim #425 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“The target passed 13 miles off the port wing of Northwest 841 and was travelling at an estimated air speed of 840 to 900 miles per hour.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, final report item 2
The report states that four to six identified aircraft were simultaneously present on the scope and were plotted at normal speeds, which the report considered verification of the scope and radar mechanism's accuracy at that time.
Claim #426 // ATTRIBUTED CLAIM // ATTRIBUTED // 98% extraction confidence
“The planes were plotted at normal speeds verifying the accuracy of the scope and radar mechanism at that time.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, final report investigation narrative
The A-3 Defense Section report states that the initial indication appeared at 98 miles and 045 degrees azimuth, but operators were uncertain whether it was a spurious response or a target.
Claim #427 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“Initial indication appeared at 98 miles, 045° azimuth. It painted dimly, leaving doubt in the operators mind as to whether it was spurious response or a target.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, A-3 Defense Section report, DIARY
The A-3 Defense Section report states that the target approached the station area but was not detected leaving it.
Claim #428 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“That is to say, the target approached the station area, but was not detected leaving it.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, A-3 Defense Section report, DIARY
The report lists several possible explanations for the absence of a continuing track, including the target leaving on the deck, obstruction by permanent echoes, or detection failure by inexperienced operators.
Claim #429 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“Such a situation might be caused by a target leaving "on the deck", being obscured by permanent echoes, or mere failure of detection by inexperienced operators,”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, A-3 Defense Section report
The report states that the height-finding radar was inoperative and therefore no altitude was indicated.
Claim #430 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“The height finding Radar was inoperative, consequently no altitude was indicated.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, A-3 Defense Section report
The report presents approximate speed estimates of about 925 MPH and about 800 MPH, while stating that range and elapsed time could not be accurately determined because plots were not recorded and the operator was uncertain whether they occurred on consecutive sweeps.
Claim #431 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“In the absence of recorded plots, range and time consumed cannot be accurately determined.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, A-3 Defense Section report
The A-3 Defense Section report says that the latter speed estimate suggested a jet-type aircraft and recommended checking the operations of the reporting party's own jet aircraft on that date.
Claim #432 // ATTRIBUTED CLAIM // ATTRIBUTED // 98% extraction confidence
“The latter figure suggests a jet-type aircraft and operations of our own planes of that type, on that date, should be checked.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, A-3 Defense Section report
The Fifth Air Force report forwards a 315th Wing statement that interrogation of aircraft crews near the unidentified target was negative and that the investigation was complete.
Claim #433 // ATTRIBUTED CLAIM // ATTRIBUTED // 99% extraction confidence
“Interrogation of crews of aircraft proximate to unidentified target reported in our radio Cite 1 381 F are negative. This radio is final report CPO investigation by this Hq is completed Pd End”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, Fifth Air Force report, item b
The 16 October commentary states that false radar indications can occur under certain radiating conditions and that the similarity of this track to a previous track tended, in the commentary's assessment, to support a radiation-phenomena explanation rather than an actual target.
Claim #434 // ATTRIBUTED CLAIM // ATTRIBUTED // 98% extraction confidence
“The similarity between this track and a track in the same area previously reported tends to confirm the probability that they are radiation phenomena rather than actual targets.”
Source: "A-1: Completely reliable" radar sighting of unidentified aircraft
// Chunk 4; source chars 42184-59803; chunk 4 chars 42184-59803, 16 October 1947 radar-target commentary
