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Case FileNARA NAID 28989474 · T1206 Roll 40

Project Blue Book Case File

Guam, September 1960September 1960

Insufficient Data

Summary

On September 29, 1960, military radar operators on Guam reported a target at 1235 (about 12:45 a.m. local). Ground-controlled approach radar at the naval air station picked up a target at 20 miles, tracked it to within 2 miles on a collision course, at an estimated speed of 2,880 knots. No target was seen leaving outbound, and no known aircraft was in the area. A tower observer saw a pale blue light with binoculars, but lost contact when he turned away for a moment. There was no sound. Both observers were considered reliable. An Air Force analysis said the facts were insufficient for a firm conclusion. The target was observed for only about a third of a minute, too short to correlate radar and visual. The Air Force listed the case as anomalous propagation, which frequently causes false radar targets at fantastic speeds.

Reported location

Guam, September 1960

Date of incident

September 1960

State / country

? / XX

Page count

5 scanned pages

USAF evaluation

unknown

Microfilm

T1206, Roll 40

Original case file scans

Original case file · scanned by NARAPage 1 of 5
View transcribed text
§
| MILITARY RADAR ; he PROJECT 10073 RECORD CARD ' :
i 1. DATE 2. LOCATION 12. CONCLUSIONS
L 0 Wos Bolloon
é 29 Sep 60 Guan [a] Probably Bolloon
_ |3. DATE-TIME GROUP 4 TYPE OF OBSERVATION ” oN dd bre he
| TT OR Oe B thir XX Croond-Roder’ ats x re A
i 5 MT 29/ 12352 =} rg Te ich 0 Air-Intercep?! Rador DO Possibly Aircroft
§ 5. PHOTOS » SOURCE O Wos Astronomical
i O Yes OD Probably Astronomical
N Military : O Possibly Astronomicol
{ he : . Anom Pr
i 7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS | 9. COURSE X Other £OM TOD ,
O Insufficient Dota for Evaluation |
few sec | one | SW-NW DO Unknown
CURA Sa Rr SSA TER 50 TRAE fe RT MONET, PIECE, SC i a ER A NRE
" |10. BRIEF SUMMARY OF SIGHTING 11. COMMENTS
Target picked up on radar at 20 miles, tracked | Anamalous propagation frequently causes
to within 2 miles of NAS on collision course. false targets on radar scopes traveling
Estimated speed 2880 knots. Visual observation | at apparently fantastic speeds, and it
of pale blue light (with binoculars) contact appears that this might well be the
lost when observer turned away for a second. answer here. L/5v.de Conidc7 Aitieved
7 ¢ df
ATIC FORM 329 (R¥V 26 SEP 52) y
/ 5

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Source: National Archives Catalog · NAID 28989474