PROJECT BLUE BOOK

PROJECT 10073 RECORD
1. DATI- TIME GROUP 2. OCATION
9 March 49 09/2100Z Eau Claire, Wisconsin
3. SOURCE 10. CONCLUSION
Civilian Other(CONTRAILS)
4. NUMBER OF OBJECTS .
Cne
5. LENGTH OF OBSERVATION 17. RIEF SUMMARY AND ANALYSIS
1 hour arver sighted a large spjherical object. It left a very
white trail. Its motion wns up and down with tight
6. TYPE OF OBSERVATION uvering. Its sneed was moderate. Cbse 9S3
.
.

10. Highly intelligent and
GETRAL GELERAL
1. Local weather: 1. Local weather: Very little wind, 2-3 tenths high cirrus, visibility
unlinited - unlinited ceiling.
2. Winds aloft: Not known
on - I 1 ! .
-4 .
7. No photogranh made altnough obsarver believes it would have been
possible. to obtain an imege.
3
UNCLASSIFIED
DOWNGRADED AT S YEAR N 3
DECLASSIFIED AFTER I2 ITERYALS
.DOD DIR 5200.1O YEARS

ASSIVIED ARTER 12 TEX DOD DIR 5200.10 UNCLASSIFIED

11 April 1949
SUBJECT:
TO: Commanding General
Air Material Command 6
Wright-Patterson Air Force Base
Dayton, Ohio
The folloving incident is reported in accordance with Air
Intelligence
1949:
GUTERAL
1 Date of slghting: 9 March 1949
2. Time of sighting: Approximately l5oo hours
- -
3. Where sighted:
a. General
(1) Eau Claire, Wisconsin
(2) Approximately 50 miles south on U.S. route
(3) From an automobile
Ta 5
C. Altitude: 20,000 feet
7. Tine i in sight: Axproximately 1 hour
DOD DIB 5200.10 3. Aocearance of object:
a. Color: undetermined
b. Shape; sohericel
C. Aoparent construction: undetermined
YE d. Sice
(1) Metidetal alcat Aporoxlmasely 5o deet dimseser
AEM 12,
'of a B3 shot at lo feet.
UNCLASSIFIEN :
-

9. and 10. Direction of flight and maneuvers: Horizontal direction
would not be positively determined. Movenent in vertical plane was
both up and down with tight maneuvering.
11. Evidence of exhaust:
A. Color of smoke:
white more so than cirrus cloud formations.
b. Length and wiith: Trail was about 50 tines length of ob-
C. Odor: None
a Rate of eveporation: Jomlete at end of described trail.
e Mo sqund or spurts.
12. Effect on clouds: Object did not pass through any cloud
fornations but at tines aoneared silhouetted against cirrus clouds -
therefore indlcating that object was below cirrus formntions.
1.30 Heighto: Hone
14. Supporti None observed .
15. Propulsion: None observed
16. Control and stability:
a No fins observed
17. 1 No air ducts observed.
- 18. Speed: llot over 200 miles per hour.
:
19. Sound: Mone
30. Manner of di isaopearance: Lost sight of object on entering city
of Bau Claire, Wisconson.
Relative to the Observer
1.
2. Aldress: lashington 20, D. O.
3. 030wntiva1 ofttcer rwlas. Venoder Cthtcer (82le)
Station-d Hendquartere Air leather Service, Andrewe Mr Furce Base.
UNCLASSIFIED .
-

i. 16
FIED .
INCIDENT NO.377
1. 1 Date of Observation 9 March 1949 Date of Interview
2. Exact Time (local) 1500
3. Place of Observation Eau Claire, Wisconsin (50 miles South)
4.Position of observer Ground from auto
5 Khat attracted attention to object
6. 1 Number of objects
7. Apparent size BB shot at 1o ft)
8. Color of object Undetarmined
9. Shape Spherical
10. Aitituds L0-45° slavation 20,oco' (based on normal altttude for condensation
trail). treil).
11. Direction from observer Direction from observer
12. 12. Distance from observer 10-25 miles (lataral) 10-25 miles (lateral)
13. Direction of flight of object(s) 13. Direction of flight of object(s)
14. Time in sight 1 Hour
15. Speed Not over 200 MPH
16. Sound and odor 16. Sound and odor None noticed Nore noticed
17. Trail Intense white 50 times of objeot, width 1 to l0 times width of
object.
1s. Luminosity
19. Projections
20, Maneuvers up and down with tight maneuvering
21. 1 Manner of disappearance
22. Irfaet on Clouds Hone
23. Additional information concerning objoct
2L Wather Conditions W
(ovar)
E
*+

4
.
13
UNCLASSIFIED
.