PROJECT BLUE BOOK

PROJECT 10073 RECORD
1. DATE - TIME GROUP % LOCATION

1,2, 3 March 1950 Knoxville, tennessee

3. SOURCE 10. iwectecy vesere)
Army Radar Other (KiCmGc XC CoOMAIXUE XESS Probable Ground Returns

4. NUMBER OF OBJECTS
Soveral ground returns from inversion. Report on 3 March of A/C
11, BRIEF SUMMARY AND ANALYSIS

5. LENGTH OF OBSERVATION
1 hour 55 minutes,  Ywe successive nights returns of stationary object. Cn third
6. TYPE OF OBSERVATION night slow motion was Aeagend rng ist night 1 hour 55 minutes.
Ground Radar

2d night Not stated. 3d its day report of object size of
C-47 with track speed estimated at 200 knots.
7. COURSE
1. oe ti 2. Not B

Returns on 3 sucessive nights from same quadrant. Probably

Report from 3 March probable A/C. First two nights returns
“Por stationary object likely ground targets since they were
of long duration. No Weather data included. Should be an

inversion in the area at the time in order for this to be a
cause of the report.

% PHYSICAL EVIDENCE

0 Yes
= No

FORM
FTD ser 63 0-329 (TDE) Previous editions of this form may be used.

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LEMORANDU?!

‘
SREILT: Radar scuisaent in :noxville, Tennessee retcaren (pgp (0
Unidentified bisects in Vieinity of Cak Aidze.

The followin: infcration was received from Cj, 3d aray, Fort ~~ laa
georgia, amd froa col District Cosanter, aaxaell aF.t A tsee -acuart
Caief of —nginvers cf rosar stition near inmexville o «rated by station
Be on re-ortcd to lr. a, Fe Dalis, Culaf of tne al wecurity Divisicn at .ak
nic se, Terressee, tuet m2: cited tarou_ a .scar cet a.c~7 between 2155 ard
235v hours, 1 Lar ow? ar unicentifiec cbjuct, a.titude m,w feet, cesriug
@;.proxizately 352° to 540° fron inoxville, aistence lo alies, The recar st
Oper .ted on 19,W. xe: caniuie frocuercy. opeec or wirection of objuct
weeter ained.

AEC Security Division Cnief ut Cak Zic-e, checked with S:yrna afi,
hasnville, which re,orted tnst there were fo fiicct plans that vould
indicate a clane being im that vicinity ana altituce. 3d Aray ciecked with
lLth AF with nesative results,

On 2 her 50 one report indicated tie station iad picked up en object
in a Froxizately the same location at 11-5 hours. Another re.ort imic:ted
that at 202 hours, save cate two unidcerti: ied objects a,;earea re ortely
at an altituce of 80 5000 feet, bearing 310° froa Knaxville. T:.ere was no
speed or directicn incicate-, lo fli jit plans were reported,

At 1035 hours, 3 -ar 5C, 8 re ort was a ain received froa tin save
source indicating one unicentified object altitude 40,00 feet, 32° fros
Knoxville, same frecuency, a:;raxt-ste speed QU miles per hour. +0
direction but determined a-proxizately the size of Ci] Aircraft,

AEC Security Livision Chief is act certain as to qperaticn efficiency
of racar unit and has recuested anyrna aF Fase to send cualified racar
operator. SyTnA ius 0 secson SO quntifieu but Cer. Sus _vstec 3c aruy serd
qualified racar operator to check the ecud, sent. Colonel jncocn, aF lic ison
to lors has requested risht-iati-rson .f. to soc ace.uate ra.ar set to
Knoxvilie. Inctections received t..ct ri-..tesattersca ar. sical nct sem recur
sets if trey can be sus, lies froaa iccal seucese. 3d amy re. ats co culifies
Tac?l cpverswrae

Se. Eo ADCOCK, Chief cf «n-invers, .acar, station iRCL, “noxville,
WO mug th. sip..tin.s ceseriocea stove nis & local re utution in .wavilie cf
bein; Aissly ce,e:wable. ie was on enginecr in racar cx, :ri.entation wore‘

Co eon 0 em ree

prior to and coping .crld .2 i: DOWNGRADED AT 3 YRAR INTERVALS ,

———.: DECLASSIFIED AFTE nue ¥
£ =. DOD DIR 5200.10 —_

ek sean UNCLASSIFIZD | “A

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