INCIDENT SUMMARY SHEET
Incident No. 183
1. Date and Time of Observation: 15 Oct 1948 - night
2. Where Sighted: Fukuoka Area between Shigamo Shima 33° 40' N by 132° 00' E and Fuku Shima 32° 45' N - 128° 40' East, Japan
3. Observer's Position: Air (i. e., ground, air, control tower, etc.)
4. Name and Address of Observer: N/S
5. Occupation and/or hobbies: pilot and radar observer
6. Attention Attracted by: pip of unknown aircraft appearing on airborne radar
7. Number of Object(s) seen: 1 possibly 2
8. Size of Object(s): Could not be estimated
9. Color of Object(s): N/S
10. Shape (Sketch if Possible) Could not be determined
11. Nature of Luminosity: N/S (directed beam of light?)
12. Altitude of Object: N/S (estimated)
13. Estimated Distance of object from Observer: 9 miles to 12,000 ft
14. Estimated Speed of Object: Much greater than Y-61.
15. Time in sight: N/S
16. Tactics: Evasive
17. Sound Made by Object(s): N/S
18. Direction of Flight of Object(s) N/S
19. Apparent Construction: N/S
20. Effect on Clouds: N/S
21. Exhaust Trail Color of): No exhaust flames or trails seen
22. Manner of Disappearance: Accelerated speed and was lost to airborne radar-scope
23. Weather Conditions at Time of Sighting: Fukuoka Area: Unlimited ceiling, wind calm, visibility 5 to 6 miles with heavy cloud coverage 12 to 14,000 ft
24. Peculiarities Noted: High rate of acceleration, vertical scattered. ascent, cognizance of Y-61's location at all times.
25. Summary of Incident: (over) (See attached page)