Mt Laguna, californiaDecember 1955

Unidentified

Summary

On December 17, 1955, an unusual high speed track appeared on ground radar at Mount Laguna, California. The local time was about 0945 (9:45 a.m.). The observers were USAF radar operators, and the report was made by military personnel.

Three operators saw the track on an AN/FPS-3 radar set. They reported no internal interference on the equipment at the time. The track came inbound from one radio area, checked at a point north of another, then turned outbound. Its estimated speed was about 3,000 knots, but the speed calculated from the full track path was about 1,415 knots. The crew watched the track for about 13 minutes until it passed out of radar range.

The operators thought the track might have been a test aircraft, but a nearby base could not confirm any of its aircraft in the area. The crew said the track did not match any interference they had seen before.

The case is filed under Project 10073, the Air Force's official record for unidentified flying object reports. The record card noted it as a possible test vehicle.

Reported location

Mt Laguna, california

Date of incident

December 1955

State / country

CA / US

Page count

3 scanned pages

USAF evaluation

unidentified

Microfilm

T1206, Roll 24

Original case file scans

Original case file · scanned by NARAPage 1 of 3

View transcribed text

| i
age : PROJECT 10073 RECORD CARD Se
PE _—
© | 1 DATE 2. LOCATION ~ . | "2. concLusIONS
. gre : O Wos Bolloon
& | 17 Dep 55 Mt Laguna, california O Probably Bolloon |
© | 3. DATE-TINE GROUP 4 TYPE OF OBSERVATION Bj Foxuikly Balloon
f O Wos Aiicroft

Localities foe Boe Raat li 0 Ground- Visual X Ground-Rodar OX Probably Aircraft

i omT_17/1745Z 0 Ain Visual O Alr-Intercept Radar |D Possibly Aircraft |
~ | 5- PHOTOS » SOURCE O Was Astronomical bi
E O Yes ; D Probably Astronomical
1 & No military © | Possibly Astronomical
© | 7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS | 9. COURSE on BAT) | CARINE in CT Ole 4 SRR
4 0 Insufficient Dota for Evgluation |
i 0 Unknown {
Caen RE ee Es Te ER EE RRR Rl Co Lo Sel De SER NE RRR BRE
© [10. BRIEF SUMMARY OF SIGHTING 11. COMMENTS
E- / |
"| Track of unusual high speed observed on Possible Test Vehicle
[ ground radar equip by 3 USAF operatoers.
"| speed estimated at 1,415 knots.
: els
3 : ATIC FORM 329 (REV 26 SEP 52)
; 7
.

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Source: National Archives Catalog · NAID 28964374