Evidence Explorer

This document contains various requests for information regarding a UFO sighting by a Japan Air Lines pilot, Captain Kenjyu Terauchi, reported on November 17, 1986. Multiple individuals express interest in obtaining FAA summaries and related materials about the incident, highlighting public curiosity and demand for transparency on UFO sightings.

…a fragmented analysis related to aerodynamic characteristics and potential upper limits of unidentified aerial phenomena (UAP). It discusses various aspects of flight dynamics and references potential models for understanding UAP behavior.

…evaluates the possibility of them being weather balloons. Multiple observations indicate that the objects were likely not balloons due to timing, altitude, and flight patterns inconsistent with balloon behavior.

…d uWwO GQOeCKS and no WinfS, was s& ig to ve Ve?Y 1 ? a Ws + ye v ”" oe > | t fe | comparable VO Ve AMC Opinion, INSULT ICL i sar yh We a : * 4. " eae : that ¢ flight, therefore, it follows sible as described if travelin; a object ) STNIAAlC peed. x Declassification Authority: NND 57565 * information. It may be well to point that at

…ing objects". (a) Maneuverability. A spsacial-purpose rocket can be made ag maneuverable as we like, with very high accelerations either along or normal to the flight path. However, a high-performance Space ship will certainly be large and unwieldy and could hardly be desirned to maneuver frivolously around in the Earth's atmosphere. ‘The only economical man…

…ry orbit to the other. These are 3.1, 7.9, and 10.7 miles per second, respectively, wlving a tctal required performance of 20.8 miles per. second for a one-way flight. Barring a suicide mission, the vehicle would have to land and replenish or else carry a 100% reserve for the trip home. Let us assume the Martians have developed a nuclear, hydroren- propelled…

Of course, if we allow the Martians to refuel, the vehicle covld have only two stages# and the gross weight would be only (100) = 123 times the payload, i.e., 250,000 pounds. This would 9 require bringing electrolytic and refrigerating equipment and sitting at the South Pole long enough to extract fuel for the urney home, since they have not asked us for sup…

… left. ~ Begin ters of report on AF Form “eee sea us was reported by 15 observers at Sica boat isk Airport, = femple, Toxas, 9792598 Sl-10*Ns by 2 observers on flight near Evant, © Texas, 98°10°® 31°28'N; 2 observers at Stephensville, Texas, 98°12'W : 32°13°N; and 1 observer in Temple, Texas, 97°20'W 31°07'X, ' | at approximately 2045 hours 2 April 1952 for …

…d to be a ‘ et chts y ™ ac ohana PREIS as rT a a eam tea Neoiling Star", I kept watching this because of the length of tine it hee A ssayed in view, during its flight. there appearsd to be twe (2) parts fall. V4 sehind this, they had trails of ligt but not as large as the first ones: ) ~ , I estimate th onject (the largest one) stayed in sight for. 40 second…

…© horizon and passed overhead at an altitude estimated to be 10,000 ft and = continued out of sight over a bank of cumus cloud on the northern horizons = : The flight time m® this object was under my observation was less than’ 10.2 #3 is seconds. No sound was emitted fran the object. in my sddaenee hit Marte ph eee traveled at a speed faster than a jet aircr…

…s this craft performing? ANSWER 3 The craft came in at anproximately twenty degrees to my right from directly overhead, I sighted it and followed | the line of flight for avproximately two to three seconds, {It came in from ao northwesterly direction on a long, shal- low bank. At the time I saw it, it seemed to reach the apex of the bank ani turn in a southw…

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… } “s 5 — ——t—4f- 7 ! 7 ; im Cue el ee ce “WARNING AREA 0° -<. (W-163, 164) 30'E 15? Warning, Nationa! Dabense Dpacaliie Aeaet 10 . Operations hazardousito the flight of 2ircraft oe 3 1 conducted within this|area. Ee UURNE-EAU |GALLIE 26 LH 437 ae root 4 ti Yi Z, p YY | ee eine Sean 7 >») doe TEPSY WE YS THE LST*+MalTED PAFH ae | ib oBJecy Geen ep et a Pap e…

…was this craft performing? ANSWER ; The craft came in at approximately twenty degrees to my right from directly overhead, I sighted it and followed the line of flight for approximately two to three seconds, It came in from a northwesterly direction on a long, shal- low bank, At the time I saw it, it seemed to reach the apex of the bank and turn in a southwes…

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…probably about a minute. It once appeared to pass through very high, thin clouds, For the past sev- eral years I have been a very close observer of aircraft in flight, and I don't think. that there is a possibility of my being mistaken in the ap- | pearance of this object. Of course, as to what it actually is, I wouldn't care to venture a guess; but there we…

…t was not a ground reflec- tion within the cockpit. There was no aircraft in the immediate vici- nity and none was reported by Air Traffic Control and Military Flight Service. The lights seemed to appear in a slightly bent V formation and were blue in color. The formation appeared to change from a bank to a level position then stopped and banked away just. b…

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