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USAF record 28995102

28995102

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PROJECT 10073 RECORD CARD

1. DATE 12 Oct 61

2. LOCATION Ferndale, Michigan

3. DATE-TIME GROUP Local: 1802 GMT: 1222022

4. TYPE OF OBSERVATION Ground-Visual

5. PHOTOS O Yes .O No Civilian

6. SOURCE Civilian

7. LENGTH OF OBSERVATION 28 min

8. NUMBER OF OBJECTS 2

9. COURSE Varied

10. BRIEF SUMMARY OF SIGHTING Obj of sighting is probably a non-persistent condensation trail. Witness reports that obj appears to make turns and moved as a unit. The motion of this condensation trail is an illusion. The distance of non-persistent trails is the a/c is generating at the one end and the trail is dissolving at the other, this gives the illusion of movement. Direction in which the a/c is moving in the direction reported by witness is due to trails being illuminated by rays of setting sun. Dizensions arrived at by witness are not all put of bounds for a condensation trail. Length of time these contrails exist depends upon factors such as moisture content and temperature of air. Length of trail depends upon maximum above factors as well as speed of a/c. There is no evidence available which would indicate that obj of sighting was not a non-persistent condensation trail.

11. COMMENTS [REDACTED]

12. CONCLUSIONS [REDACTED]

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