PROJECT BLUE BOOK

PROJECT 10073 RECORD
. DAT TIME GROUP LOCATION
Provincetown, Mass,
3. SOURCE . CONCLUSION
Civilian UNIDENTIFIED
4 NUMBER OF BJECTS
One Case is carried as Unidentified.
5. LENGTH OF OBSERVATION 11. BRIEF SUMMARY AND ANALYSIS
9 Minutes See Case File. 7
6. TYPE OF OBSERVATION .
Ground-Radar . -
COURSE . A
Varied . .
. PHOTOS
Yes .
XI No : .
PHYSICAL EVIDENCE
A

ESL 15082
t
UNCLASSIFIED
HEADQUARTERS C304
SIGNAL CORPS ENGINEERING LABORATORIES
FORTMONMOUTH, NEW JERSEY
REFER TO.SIGEL-RMB-5 Address reply toi
Project 172B
Commanding General
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.
SUBJEC Report hting 8
2100
TO: Chief, Engineering and Technical Division
Office of the Chief Signal Officer
Depertment of the Army
. Washington 25, D. C.
Attention: IGGG-M
The attached report obtained from the Massachusetts Institute
of Technology Weather Radar Research Group under Contract DA-36-
039 sc-32038 with the Signal Corps Engineering Laboratories, is for-
warded for your information and possible transmission to interested
parties within the I. S. Air Force. Massachusetts Institute of
Technology Weather Radar Research Group requested to treat
this matter as "Restricted, Security Information" in accordance with
AR 380-5. It is understood , that this communication constitutes the
first formal report or crence.
T
.
.
UNCLAS
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Field on Cape Cod to o track a pair of jet aircraft (F-84's I believe) at 35,000 ft.
in order to provide them with an estimate of their wind drift, and consequently
winds aloft at that altitude, I have never understood why the group at otis
Field wanted us don't in general approve of using our radar
systems operations completely disconnected with our regular line of work.
This instance is, I bel the only time had any with
a group
We had established radio communications with the jet aircraft on our
VF. The first radar contact was matle with the SCR-615-B at h5-mile range and
285° azimuth. As the accompanying plot shows, the F-84's were flying straight
and level course at 250 IPH indicated air speed towards the nortlwest (3330).
below them are some light haze above, 80 that the visibility near their flight
level may have been quite The other aircraft did very shary tur nearly
2700 and again approached the F-8h's an intercepting course and closed with them,
as far could tell at 5.0 minutes. Again the F-84 pilots ere unable
to see any other aircraft. The "Flying Saucer" then carried on straight towards
Cambridge; but cur radar operators in attempting to track both the F-84's and the
"Saucer" lost track ntimuing to plot the minutes
as indicated.
The signal strength from the two F-8h1s dn close forma tion was
o-thirds saturdtion. The signal , from the "Saucer" was saturated.
UNCLA
ONT
T - S
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UNCLASSIFIED

001
h
2-F8
:
56 1P38425
WEATHER RADAR RESEARCH
MIT CAMBRIDGE, MASS.
UNCLASSIFIED
I SEPT. 1950
0950 E *

FILE NO. SUBJECT
SIGGG-M-l Report of Flying Saucer Sighting
TO FROM DATE COMMENT NO. 1
Commanding Officer CSigo 28 Nov1 1952
Signal Corps Intelligenc onoy Whedon/73909
Room 3052,Main Navy Bldg,
Washington, D.
ng to
Air Force I igence Agenoy.
2. It is understood that the Air Force treats information this type
high olassification. If it is desired that M T, under Signal Corps contract,
consider this information as higher than Restricted Security Information, this office
should be advised in order that appr propriate directives may be prepared.
AND TECHNICA
G. D. Drn
Copt, Sicaal Corpa
1 Incl: LUTHER E. JOHNSON
Ltr fm Hq, SCEL, Chief, Special Projects Branch
21 Nov 52, w/2 Incl
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.
. .
..
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iv
.
UNCLASSIFIED T
1 !Ai:
M
CCSIY.JEFORMATIA
DDFE 96 10-54801-3 U. O. GOVERNMENT PRENTING OFFICE

.
dal #3

UNCI ASSIFIED
1 :
Ltr, DO #l, File No. 1D-OSI 24-0, dated 5 Oot 50, Spot
- Intallie Rpt Unconventi onal Aircraft
:
2 Inclsi, .
- .
AMC Routing Sheet 4
subj: Sightin 3 of Unidentified Airborne Objeot
(1 oy)
Rpt of Sighting .
.
. by JOSEPH V. CONNELLY
(i oy) . ' .
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. UNCLASSIFIED
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Headquarters USAF
Washington 25, . C.
1. SYNOPSIS: Unconventional aircraft reported
sighted by Mass. Institute chnology radar observer
on 2l September 1950 between Provincetown, and
The Isle or Shoals. (Evaluation F-2)
.Rese Aasociate. " Weather Radar Project"
(U.S. Signal Corps Contract), Mass. Institute of Technol- 1
ogy, advised this District that while tracking F-86
aircraft by means of radar, that an unidentified object
R. YANDOH is a ttached as inclosure #l Inclosure #2 was
provided to S/A YANDOH T was delivered to
YANDOH by JOSEPH V. CONNELLY vritten. In view
of technical detail contained in inclosures #1 and #2,
it is not considered summarize such infor-
mation in this paragraph.
3. ACTION: In accordance 1t AFCSI Letter #85, .
dated 8 Feb 50, no further investigation is being con-
ducted by this Diatrict Office.
DECLASSIFIED YEARS.
DOD DIR 5200.10
UNCLASSIFIED R. S. BOWER
. Colonel, USAF
5 District Commander
11
.
N

toward It was moving rapidl told the
pilots about and directi them. The echo
caught up of the 86's
suddenly very speed turn to the 4 OCT 19
right, headed back toward Boston and passed directly over our
flight. perhans went under
centr ifural ship
turn amounted to something more than Miv gave an ex-
cellent radar echo whi ch could not be mistak for anything else
and in all respe velocityseemed normal radar
target. oassec while track
our flight, again seconds shortly
after and i rapidly approaching Boston ent back to the
86's since we hesitated to leave them for too Long I wish
we had when had the
+
UNCI AF23489
.. ANTT
WF-L-is Fes.42 260M OTHER SIDE)
AMC Forn ANC

thing that is none of my business, but on the other hand, it may
be something that the Air Force would like to know about if it
doesn't already I wish you would take the matte up with your
intelligence and The whole
thing has us nuts here and we don't know whether to talk
about it our
do the latter.
Regards,
reported that he later discussed this matter with TUTTLE by telephone
and TUTTLE advised him that the matter was to -bc considered confidential and
that in all probability someone tis Air Force Base would contact him
concerning it. To date, he has by anyone from the 33rd
Fighter advised informa tion ha released
to the ers IED
UNCLA
2
WF-LIS FES
AMc Form No. Dn'e for 's

ill be noted that e object e heading
towards the shore line in a direction that wou - Salem,
olloving
inormation was as rolated to
this chart:
"1. Object first detected at about point F-86's
were about at A, on converging cours rapidly
overtaking
to right crossing directly over or under F-86's at
C and headed in tovard Boston.
CERTAIN FEATURES
- 1. C
2. Turn of object was t
3. Object SS 40
mile range marl
UNCLASSI
3
AMc Form The o fod

but not appreciably.
3. c .
4. advised that he in touch with nilots of the F-86 aircraft
by VHF radio during the period the unidentified object appeared the radar
scope, and was later advised by the pilots that they had not the object.
The following information pertains to the F-86 aircraft at appro oxima tely the
time the unidontified objoct was sighted:
Run 3 Pressure altitude 30,00o ft.
Free Air Te
Time of Run, 537.6 seconds =.
Length of Run, 62.5 Miles.
True Ground Speed, 419 1PH.
Compass Course 333°
-
Magnetic Course 330°
Corrected Course 314°
. .
True Course 329°
'
UNCLASS FIED .
4
LWF-LIS FEB.49..
47 ty
To fod  kA M o

a
data in the event the unidentified object should reappear LIGDA regretted
very operated
in conjunction w. e radar set.
. 8 It was apparent the undersigned at Massachusetts
Institute of Technology and, as a result, an
account of it may eventually appear in
Incl: T R. XANDOH
.
.
UNCLASSIFIED
47 It fordm moplos will

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WINDS AI ART CN CT CN CT
k=-
Pressure Change (in tonths mb.)
MIT
Surface ∑CNCt=
Lepx 2,1950 Diurnal..
0945 Isothe
Advective.