Williams AFB, ArizonaJune 1947

Unidentified

Summary

In June 1947, an object described as round was reported diving straight down over Williams Air Force Base in Arizona. According to the brief account in the file, the observer watched two round objects descending at a very high rate of speed. The Air Force classified the case as unidentified.

A related document in the file suggests that the objects might have been freely falling instruments, possibly from burst weather balloons or rawinsondes (devices used to measure temperature and pressure in the upper atmosphere). The file also notes that a meteor falling vertically could, under the right circumstances, match the description: as the mass of the incoming meteorite decreases and its speed drops, it could eventually fall to earth as a non-glowing body. However, the file does not reach a definitive conclusion about the cause of the sighting.

The full case file, consisting of 46 pages as held by the National Archives, is reproduced below.

Reported location

Williams AFB, Arizona

Date of incident

June 1947

State / country

AZ / US

Page count

46 scanned pages

USAF evaluation

unidentified

Microfilm

T1206, Roll 1

Original case file scans

Original case file · scanned by NARAPage 1 of 46

View transcribed text

i

1 ‘ | PROJECT 10073 RECORD

R: UR.

3 | i. DATE - TIME GROUP 3 LW TION (

{ | 30 Jun LY illiams AFB, Arizona

| 13. SOURCE 10. CONCLUSION

; dlitary Probably HLTHOR

I :

~ }4. NUMBER OF OBJECTS

1 Two

4 5. LENGTH OF OBSERVATION 11. BRIEF SUMMARY AND ANALYSIS

4

f Not reported Observer oi hbed two round objects he dine straicht down.

a — ——— A A SS mm OXF IDE 33 - ye * (PIP Lira yl 5 vy 7? he - az) 119 4A oh = Yi pl ¢ Led 1
B |. TYPE OF OBSERVATION RPL MOS Sm BOT welling at a v high rate of speed.
k Ground-Tisua!

Bl |7. COURSE |

8 etre ee trai Set le

E 8. PHOTOS
. 0 Yes

. m1 No

f 9. PHYSICAL EVIDENCE

E 3 No ;

4 FORM
5 FTD sep 63 0-329 (TDE) Previous aditions of this form may be used. :

i

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Source: National Archives Catalog · NAID 28929303