28939022.pdf

|  1. DATE | 2. LOCATION | 12. CONCLUSIONS  |
| --- | --- | --- |
|  27 Jan 51 | Ryukyu, Islands (Okinawa) | ☐ Was Balloon ☐ Probably Balloon ☐ Possibly Balloon  |
|  3. DATE-TIME GROUP Local GMT 27/0725Z | 4. TYPE OF OBSERVATION ☐ Ground-Visual ☐ Ground-Radar ☑ Air-Visual ☐ Air-Intercept Radar | ☐ Was Aircraft ☐ Probably Aircraft ☐ Possibly Aircraft  |
|  5. PHOTOS ☐ Yes ☑ No | 6. SOURCE F-80 Pilots | ☐ Was Astronomical ☐ Probably Astronomical ☐ Possibly Astronomical  |
|  7. LENGTH OF OBSERVATION 23 Minutes | 8. NUMBER OF OBJECTS 245 deg | ☑ Other Contrails ☐ Insufficient Data for Evaluation…

AIR INTELLIGENCE INFORMATION REPORT
Unidentified Vapor Trail
Ryukyu Islands Area D/I FEAF
2 March 1951 27 January 1951 B-3
R.J. Reynolds, Lt Col, USAF 20th Air Force

This report pertains to an unidentified vapor trail sighted by members of the 20th Air Force at coordinates 26 degrees North - 127 degrees 15 minutes East, altitude 30,000 feet, heading 235 degrees on 26 January 1951.

APPROVED, EVALUATION BY PREPARING OFFICER:

/s/
CHARLES Y. BASFILL
Brigadier General, USAF
Deputy for Intelligence

10975

7-3712-34

DOWNGRADED AT 3 YEAR INTERVALS:
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10

Hq…

2
AIR INTELLIGENCE INFORMATION REPORT
ER-45-51
D/1 FEAF

1. On 27 January 1951 the 20th Air Force, Okinawa, reported an F-10 flight sighted a vapor trail on 26 February 1951 at an altitude of 30,000 feet; heading: 340 degrees; time: 1025/I. The point of sighting was 25 degrees 10 minutes North - 127 degrees 16 minutes East. The friendly aircraft was at an altitude of 10,000 feet; heading: 100 degrees at an indicated air speed of 400. The vapor trail was sighted for two (2) minutes. A second F-10 flight scrambled and observed one (1) vapor trail at 24 degrees 10 minutes North - 125 degrees 21 m…

AIR INTELLIGENCE INFORMATION REPORT
3
D/I FEAF
LR-45-51
Page 3 of 4

30,000 turned to a heading of 270 degrees and sighted a vapor trail at 11 o'clock level. At the distance we were from the vapor trail it was impossible to determine the number of vapor trails. It is my belief that there was only one vapor trail which could be seen from that distance. We turned to 235 degrees and flew that heading for 23 minutes at 99¢. At this point our rate of closure on the vapor was not apparent, therefore due to lack of fuel we returned to base and landed.

Capt, USAF
LESLIE C. MILLS
1st Lt, USAF
Interrog…

15214
AF FORM 112--PART II
CONFIDENTIAL
Air Intelligence Information Report
4
L/I FEAF
IR-45-51
Page 4 of 4

6. Although all possible sources were utilized to identify the reported phenomena no conclusive evidence as to source or origin of the vapor trail has been obtained.