PROJECT BLUE BOOK

‘ , PROJECT 10073 RECORD CARD

1 DATE ( |% Location (| ~"}¥2 CONCLUSIONS oa)
6 March, 1951 Albuquerque, New Mexico O Wes Balloon
= 0 Probably Balloon
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION —————1 2 Possibly Balloon
ES a 0 Bibund- Vi suel 0 Ground-Rador 2 My we Ne ay
om7_06/21342 —_— — O Air-Viswol : OD Air-Intercept Radar n Possibly Airereft
5. PHOTOS 6. SOURCE <= ; (t{ Wos AstronomicolMeLeor
O Yes 1) Probably Astronomical
XD Ne Civilian 0 Possibly Astronomical
7. LENGTH OF OBSERVATION —s_—=~ 8. NUMBER OF OBJECTS | 9. COURSE ~~“ID Other
0 Insufficient Data for Evaluation
Not Reported one Not Reported D Unknown
10, BRIEF SUMMARY OF SIGHTING 11. COMMENTS Cah
Reports gathered by Dr, on Report of meteor, not UFO,
this object with purpose of attempted ape ;
recovery of portions assumed to have possi Ste tS ays
landed. S29 A 9 &
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ATIC FORM 329 (REV 26 SEP 52)

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HOT SPRINGS! O

Effective Date March 15, 1950. In the interest of safety, all airmen proposing to fly within 150 eat
miles) of Los Alamos, New Mexico at an altitude greater than 10,000 feet MSL or more than 4,000 feet |
terrain, whichever is higher, are encouraged to file flight plans, preferably IFR, with the appropriate Cc

to do so may result in in-flight identification by fighter aircraft. THE EXISTING PROHIBITED i
PTA V NITY OF LOS ALAMOS REMAINS OUT OF BOUNDS FOR ALL AIR TRAFFS

enn

° 45 ’
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1 LY 27

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VERY HIGH FREQUENCIES (VHF) PRINTED IN BLUE |
For pilot information see ‘er side

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chant oy

PP

PILOTS - never
telephone.

The following are
IDENTIFICATI
station followed t

Example: ‘C
IDENTIFICATI:

and letter suffix,
Example: ‘“S

“9 052
. —_ - > t
Example of pilot joa os
“ — — a _— — z
After communicaty- ; ee sujor , 2
last three units 1 =
The airway station ~~ BeisiwyO)

radio range or rad\

Example: Pts .

After the airway
message with the
other information |

Example: ar
Sam
TRS

If you are flying V
of flight know your
Flight plans may b
not served by suchi

The word foaseay

The word “OUT”
Example: “ST

The words “SAY /

The words “STAN|
Examples: “ST,

assistan

upper Wo

tain of y

trained tS,

terrain fi
lations).

A-ABLE 33p)
B-BAKER

C -CHARLIE
D-DOG
E-EASY
F--FOX

G -GEORGE
H HOW
1-ITEM
J~JIG
K~KING

sath

os

L~ LOVE
M-~ MIKE

Chief, Atmospheric Physics Laboratory

DOWNGRADED AT 3
DECLASSIFIED AF

a's 0)
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: !
Y
UNCLASSIFIED
PROJECT TWINKLE
FINAL REPORT
\
L, ELTERMAN
27 November 1951
APPROVED:
P ° H, WYCKOFF

YEAR INTERV
TER 12 YEARS,

DOD DIR 5200.10

ALS;

6 Mar, 1951 ‘ Report from four los Alamos personnel of very bright
object crossing sky. Also observed by two Kirtland AFB
pilots who reported this as a meteor; time - 14:30; reported

by Dr. La Paz to be a detomating fire-ball. No fragments

recovered,

DOWNGRADED AT 3 YRAR |] ;
DECLASSIFIED AFTER 13 YRane ou:
DOD DIR 6200.10

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DEPARTMENT OF THE AIR FORCE fe ee
HEADQUARTERS UNITED STATES AIR FORCE x
WASHINGTON
THE INSPECIOR® GENERAL. USAF
STH DISTRICT OFFICE OF SPECIAL INVESTIGATIONS
WRIGHT-PATTERSON AIR FORCE BASE, DAYTON, OHIO
IN REPLY REFER TO. 5D 2h-O 26 March 1951

SUBJECT: Anomalous Luninous Phenomena
The Fireball of 1951, March 6, 1:5h

TO: Commanding General
Air Materiel Command
Wright-Patterson Air Yorce Base

Dayton, Ohio
ATTN: MCIS

The attached Spot Intellicence Report, dated el March 1951,
and copy of letter to Headquarters OSI, dated 22 March 1951, are
forwarded for your information and any action deemed appronriate.

ax,

2 Incls JAIGS F. X. O'CONT:
1. Spt Intl Rot dtd 2l Mar & Colonel, USAF
. wfincl Sect Aero Chart District Commander
2. Cy of ltr to Ha OSI, dtd
22 Mar 51
Cony to: ,
Yq OSI w/o abv incls
, ; ,
?
4
{ /
i
f
" 7
4
trey
a re
Ue f
lls

DOWNGRADED AT 3 YEAR INTERVALS;
DECLASSIFIED AFTER 12 YEARS.
DOD DIR 5200.10 -

4 FOWCE-WPRAPE-L Le NOV » oi NCCAS

DEPARTMENT OF THE AIR FORCE
HEADQUARTERS UNITED STATES AIR FORCE
WASHINGTON

THE ING@PECTOMW GENERAL VOAT
'%re OVSTRICT OFFICE OF SPECIAL INVESTIGATIONS
eC rATL en AI FORCE GABE, HEW WERIC OG

File No: 24-0 21 March 1951

SPOT INTSLLIGZNCS FEPORP

SUBJRCT: Anomalous luminous vhenomens
The fireball of 1951, March 6, 15:34

TO: Director ef Special Investigations
Headquarters, United States Air Force
Washington 25, D. C.

Although this incident does not fall within the purview of
AFCSI Letter No. 85, dated 23 October 1950, nevertheless, the pudlicity
incident to this matter and the search conducted by Dr. LINCOLN LAPAZ,
Director Insetatute of Meteoritics, has been euch that it is believed
the facts adduced will be of interest, and in accordance therewith
distribution is being accomplished.

1. SYNOPSIS: An anomalous luminous vhenomena occurred 6 March
1951 at approximately 14:34 hours. The reports of this phenomena were
gathered by Dr. LINCOLN LAPAZ, and a search was made to determine
whether or not there wers resultant physical evidence of a meteorite.
The physical evidence of a meteorite, if such was a meteorite, has not
been discovered. Visual observations have been reduced to points of
intersection covering an approximate rectangular area three (3) miles

by six (6) miles and within an area contiguous to Tafoya, New Mexico.
Search continues by LAPAZ.

2. DSTAILS: Dr. LINCOLN LAPAZ, Director, Institute of Meteoritics,
University of New Mexico, Albuquerque, New Mexico, gathered all available
sizhting data of the phenomena and has attemoted to recover any physical

residuary evidence 8s more particalarly delineated in a report of Dr.
LAPAZ:

"The March 6 fireball is the last in the long series of incidents
occurring in northeastern Hew Mexico and the closely adjacent portions of
Texas and Colorado. Of this series, only three firebalis produced any
acoustic phenomen® and, therefore, were initially rezarded as almost
certainly detonating meteorite falls. The first of this trio was the
fireball of January 30, 1949 in the Amarillo-Lubbock rezion, which was
tre sudject of intensive study by the 0.5.1. and the Institute of Meteoritics
end other interested azencies. In spite of the fact that the area of fall
was speedily and accurately located and that this area was not only searched
for several weeks immediately after the fall, Dut also has been repeatedly

SOWNGRADED AT 3 YEAR INTERVALS;
OT NCLASSIPIED AFTER 12 YEARS
‘" DOD VIR 6209.10

WHICTASSIFIEO

UNCLASSIFIED
File 24-0 |
Sudj Anomalous luminous phenomena 21 Mar 51

7

“searched since, no meteoritic fraements have been recovered to date.

The second of the trio was the detonating firedal) of December 4, 1949 in
the Campo, Colorado region, from which , in spite of long continued careful
search, no meteorites have been recovered. The fireball of March 6
completes the trio and bids fair to. conform to the pattern set by the two
earlier falls, in that searches initiated in the accurately delimited

area of fall within 24 hours after the appearance of the fireball have
discovered no meteorites to date.

"The detonatine fireball of March 6 was of exceptional magnitude,
rivalling the record-breaking meteorite fall of 1945, February 18 in
Kansas and Nebraska, from which over a thousand fragments have been
recovered, in the intensity of the light and sound effects produced. The
fireball of March 6 was seen at a distance of 10 miles by an observer
crossing glaring snow-fields in bright sunlight. As rezarde the remarkable
sound phenomena produced on March 6, they beve been so fully reported on
by the news agencies as to require no comment here. Transit measures on
carefully made observations of this fireball indicate that it remained
luminous to a very low level in the atmosphere. Fence, if it were @ normal
meteorite fall, the probability would be very creat that solid masses
survived to fall to the earth. Furthermore, decause of the great size and
luminosity of the fireball, it seems likely that the larzest surviving masres
wonld be of such size as to munch out easily visible craters in the earth.
Yot in this, as in the two earlier cases, no trace either of meteorites or of
the effect of meteoritic impact on the earth has besn found.

"In view of the very vusszling nature of the three major incidents
Giscurssed above (and of many other unexolained minor incidents of similar
nature), I wish to repeat the recommendation I made in the case of the
Lubbock and Campo fireball falls, namely, that the 0.5.I. arrange to secure
photegravhic coverage of the area in which frarments yrom the March 6 fall
should have landed., (Preferably the photo-reconnaissance missions should

secure stereo coverage of the sort obtained for us in the Four Corners region
under the direction of Colonel James C. Tison, Hq. USAF, DCS/Opns, Photo
and Reconn. )

"After a careful stuiy hae beer made of the photogranhs of the
fall area (an elliptical region with axes of 8 and 5 miles, respectively,
tre major axis extending from (about) Lat. 36° 24', Long. 104° 10’ to
Lat. 36° 31', Long. 104° 6', see Trinidad (S-4) Sec. Aero. Chart), it is
strongly recommended that sufficient air force personnsl be assigned to

eround search to insure exhaustive search of all areas in which meteoritic
impact. appears to have occurred.

"In maine these recommendations, I am chiefly influenced by the
possibility that the fireballs in question may not be meteoritic in nature.
However, in the event that my first juizment is confirmed by recovery of

> TEAR INTTRV ‘IS;

CIOWNGRADED AT 8 YEAR INT Mess
y SSIPlTED AFTER 12 YEARS.

(ONGLASSIFIED , = DECLASSIEI ED ee 0

See, |
anne

f So = FIED
File 24-0 “WNCLASS
Subj Anomalous luminous phenomena 21 Mar 51

“meteorites when more exhaustive air and ground search is made, I do not
feel that the effort expended by the Air Force in conducting such searches
would have been wasted. Meteorites recovered soon after their fall have,

at present, a military value far in excess of the scisntific importance
they have always had....*

3- ACTION: This District Office is not taking any action other
than forwarding this report in accordance with ACSI Letter No. 85,
dated 23 October 1951. In the event that there are any new developments
of consistent facts pertaining thereto, they will be forwarded in
accordance with the distribution of this report.

1 Inel RICHARD G. COX
Sect Aero Chart Lt. Col., USAF
(S-4) District Commander

cos AMC (dup) w/incl
AFSWC

DOWNGRADED AT 3 YEAR INTTNV*"S
DECLASSIFIED AFTER 12 YEARS.
3 DOD DIR 5200.10 -

-——> Or" © Cm.

—
> .

Se ee

CLASSIFT

: —< 4 - 7
; ’ >

, p Menvcrassirict

EADQUARTERS UNITED STATE?
WASHINGTON

FORCE

AIR MAIL THE INSPECTOR GeNamal UBar

17re OISTRICT OFFICE OF BPECIAL INVESTIGATIONS
KIMTLAND Al\@ FORCE GAGE, NEW MEKICO

File Not 2h-0 22 March 1951

SUBJECT: Anomalous Lasinous Phenomena
Fireball of 1951, March 6, 1:33)

TOs Director of Special Investigations
rs, United States Air Force

Keadquarte
Washington 25, UD. C,

1. Reference is made to the attached Spot Intelligence Report,
subject as above, dated 21 March 1951.

2. Dr, LINCOLN LAPAZ is of the opinton (see third paragraph of
Dr, LAPAZ's statement, attached report) that a photographic coverage of
the area in which fragments from tho Harch 6 fall should have landed
may produce data of value to the Air Force. The 17th District OSI has
not expressed an opinion concerning this matter but contact was made
with Headquarters, Special Weapons Conmand, in an attempt to secure
photograohic coverage. The Director, Security and Intelligence,
Special Weapons Command, after a check of his facilities, informed
this office that such a mission could not be accomplished by his Com
mand due to a shortage of equipment and personnel.

3. Reference the fourth paragraph of LAPAZ's statement, attached
report; this office has informed Dr, LAPAZ that the 17th District OSI
does not concur in the recommendation that Air Force personnel be as-
signed to ground search in the areas in which meteoritic impact apvears
to have oecurred,

kh. The attached report is forwarded for your information and re-
view. It is requested that this District be informed if your Héadquarters
deems it advisable to secure photographic coverage of the area as outlined
on the attached map,

1 Inel RICHARD G, Cox
Spot Intel Rpt, 2ZMarSl, Lt. Col., USAF
w/l Incl thereto District Commander

cc: AMC

DOWNGRADED AT 3 YEAR INTERVats.
Ww DECLASSIFIED AFTER 12 YEARS
DOD DIR 5200.10 ,

a

ss, UNCTASSip IED

PILOTS GUIDE FOR COMMUNICATING WITH AIRWAY STAT IONS |
PILOTS - never hesitate to use your radio. Remember that talking by radio is almost the same us talking on your home
telephone.

The following are typical examples of two-way communication with airway stations.

IDENTIFICATION OF AIRWAY STATIONS: CAA Airway Communications Stations are identified by the name of the
station followed by the word “RADIO”.

Example: “CLEVELAND RADIO”.

IDENTIFICATION OF AIRCRAFT: Your aircraft is identified by the make of aircraft followed by the certificate number

and letter suffix, if any.
Example: “STINSON ONE THREE SI1X FIVE”

“STINSON ONE THREE SIX FIVE-Y”.
Example of pilot calling an airway station:
“CLEVELAND RADIO-~-THIS IS-STINSON ONE THREE SLX FIVE -OVER"

Alter communication has been established, an abbreviated form of identification may be used ,il desireds using the

last three units of the certificate number only.

The airway station will normally answer on the radio range or radiobeacon frequency. If reply is desired on other than the
radio range or radiobeacon frequency, pilots should indicate the frequency on which the station reply is expected.

Example: “CLEVELAND RADIO - THIS IS- STINSON ONE THREE SIX FIVE - REPLY ON ONE ELEVEN
POINT ONE MEGACYCLES - OVER”, }

After the airway station has answered your call, proceed with your message without further call up other than preceding the

message with the aircraft identification. Your message may consist of your position report, a request for weather data or
other information that may be required to assist you to your destination.

Example: ““STINSON ONE THREE SIX FIVE - OVER CLEVELAND AT ELEVEN TWENTY - FOUR T HOU-
SAND FEET ON VFR FLIGHT PLAN FROM YOUNGSTOWN TO TOLEDO - WHAT IS THE WEA-
THER AT TOLEDO - OVER”.

If you are flying VFR, a position report is not required, however, it is to your advantage that the stations along your route |
of flight know your position at all times in order that assistance can be rendered should you encounter difficulty,

Flight plans may be filed while in flight, with a CAA Airway Communications Station, if your departure was from an airport
not served by such a Station.

The word “ROGER” is used to acknowledge receipt of a message.

The word “OUT” is used when a conversation is ended and no response is expected.
Example: “STINSON ONE THREE SIX FIVE - ROGER, OUT”.

The words “SAY AGAIN” are used if a message was not understood and a repetition is desired.

The words “STAND BY” are used to indicate that a return call will be made as soon as practicable.
Examples: “STINSON ONE THREE SIX FIVE-SAY AGAIN, OVER”.
“STINSON ONE THREE SIX FIVE-STAND BY”.

ENROUTE FLIGHT SERVICE

All airway communications stations are ready to provide pilots with enroute flight information or
assistance at any time. You may call any CAA RADIO for latest weather along your route of flight,
upper wind velocities, airport conditions, and other flight information. If you become lost or uncer-
tain of your position, call any CAA RADIO. Personnel at CAA airway communications stations are
trained to assist pilots in establishing position by any of the following methods: (a) Visual reference to
terrain features; (b) Low frequency radio range orientation; (c) VHF omni-range indications (triangu-

lations).
RADIOTELEGRAPH CODE

A—ABLE om N—NAN ome 0-ZEE-ROW ae ae ana aoe
B-BAKER emoce O-OB0E aa 1—WUN oan a= an on
C—CHARLIE amo ame P—PETER camams 2-—TOO ee am oe ee
D-DOG enee Q-QUEEN == aca 3— THU-REE conmmas
E—EASY ° R-ROGER mms 4—FO-WER 066sem
F —FOX osems S~SUGAR ee 5—FI-YIV cbese
G-—GEORGE mame T—TARE - 6-—SIKS abenen
H—HOW acee U~UNCLE o— 7—SEV-VEN ery
1—1TEM on V-VICTOR = secu 8—ATE on as akee
J-'G s_ eo mam = W- WILLIAM «ame ame 9-NI-YEN esememanec
K—KING ies ale X-—XRAY —T.

L~LOVE ommoe Y-VOKE escamee

M—MIKE — Z-—ZEBRA — mr