Flagstaff, ArizonaMay 1958

Insufficient Data

Summary

On May 3, 1958, military personnel at Flagstaff, Arizona reported observing an object with the appearance of an elongated balloon, white in color and comparable in size to a basketball. The object appeared motionless and was detected at approximately 35,000 feet altitude. The observation lasted 15 minutes. The object was picked up on radar. The source of the report was military. The Air Force evaluation concluded the sighting was a balloon.

Reported location

Flagstaff, Arizona

Date of incident

May 1958

State / country

AZ / US

Page count

3 scanned pages

USAF evaluation

unknown

Microfilm

T1206, Roll 32

Original case file scans

Original case file · scanned by NARAPage 1 of 3

View transcribed text

PROJECT 10073 RECORD CARD

1. DATE: 3 May 58

2. LOCATION: Flagstaff, Arizona

12. CONCLUSIONS:
[X] Was Balloon
[ ] Probably Balloon
[ ] Possibly Balloon
[ ] Was Aircraft
[ ] Probably Aircraft
[ ] Possibly Aircraft
[ ] Was Astronomical
[ ] Probably Astronomical
[ ] Possibly Astronomical
[ ] Other
[ ] Insufficient Data for Evaluation
[ ] Unknown

3. DATE-TIME GROUP: Local ___ GMT 03/16252

4. TYPE OF OBSERVATION:
[ ] Ground-Visual [ ] Ground-Radar
[X] Air-Visual [X] Air-Intercept Radar

5. PHOTOS: [ ] Yes [ ] No

6. SOURCE: Military

7. LENGTH OF OBSERVATION: 15 mins

8. NUMBER OF OBJECTS: one

9. COURSE: stationary

10. BRIEF SUMMARY OF SIGHTING
Obj w/appearance of elongated balloon, size compared to a basketball, white, Appeared motionless. A/C at 35,000, Obj picked up on radar.

11. COMMENTS
Description is of a balloon.

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Source: National Archives Catalog · NAID 28978098