PROJECT BLUE BOOK

PROJECT 10073 RECOND CARD
LOCATION CONCLUSINS
Heffeaville, Fennsylvania wis Beaen
Prabaaiv mp.asn
TYPE OF OBSERVATION . P
Grouns-Vaeuel Grouna-Rader 14
non Dr cra
A.o V soot A intercept Raner Pos A.
40745 6' SOURCE nos Astranom.ca.
Yes civilion Proy A
LENGTH CF GBSERVATION B. NOMBER CF DN.FCT tin
several minutes 1
HEF SUMMARY OF SIGHTING T. COMWENTS T. COMWENTS
Sketchy Sketchy ro
3)
Directer Directer 20-
Maxwell AFB, Alol ATTN: Archives Bre Aerospace Studies
Maxwell AFB, Alobama ATTN: Archives Bronch Aerospace Studies Inst U K243.6012-
RETURN TO: RETURN T
TIC VORM 329 (REV 26 S2P 52)

A.ATIAA
NDR29165 SECURITY IN ORMATION 2.AT1A
ACTION 3.
C-1 PRIORITY RESTRICTED 25Avc52 09 04 v. e.
FM AIR WEATHER SVC DETACHMENT AT DHAHRAN AIRFIELD DHAHRAN SAUDI
ARABIA 220920Z
TO CS USAF WASH DC TO DIR OF INTELL
SPECIAL SECURITY OFFICER ATIC AMC WPAFB ATTN ATIJA-2C SECMP10:C
AIR DEFENSE COMD ENT AFB COLO SPRINGS COLO
MATS WASH DC ATTN INTELL DIV
AIR WEATHER SVC WASH DC ATTN INTELL BRANCH
FLY OB RPT: 1 CLEAR ACUTE LIGHT APPARANT SIZE OF PIN POINT IN THE
ODOLITE, SIGHTED AT 2021157. OBS BY THE ODOLITE ON SURFACE,
LAT 26 DEG 17 PLS NOT THLJNG 50 DEG 89 MIN EAST. OBJECT FOLLOWED
FOR 4 CONSECUTIVE MINUTES BEFORE BEING LOST WITH FOL BEARINGS.
1 MINUTE, ELEV ANGLE 34.0 DEG, AXIMUTH ANGLE 156.7 DEG: 2 MINUTES,
ELEV ANGLE 57.6 DEG. AXIMUTH ANGLE 22S.0 DEG: 3 MIN: ELEV ANGLE
89.9 DEG, AXIMUTH ANGLE 350.2 DEG: 4 MINUTES, ELEV ANGLE 43.FLNJS
DEG, AXIMUTH ANGLE S20.2 DEGC NOT WITNESS TO OBS: OBJECT NOT VISIBLE
EXCEPT THRU THE ODOLITE BUT TRACH OF CBJECT MADE BY SKILLED VEA OBS. EXCEPT THRU THE ODOLITE BUT TRACH OF CBJECT MADE BY SKILLED WEA OBS.
WEA CLEA VIS 15 MILES AT TIME KVS. DHAHRAN PIBAL 2Z2102Z K
25 029 12904 25134 333 07 43413 53 419 C X3 5TA0L4 73428 83450 25 029 12904 25134 333 07 43 413 53419 C X35TA0L4 73428 83450
TERHINATQD DEELIGHT FADE. BAHREIN ISLAND RAWIN 23150SZ 85309
253 99 33321 53 225 63125 83141 9I1SE9GBVE1 23 131 25411 43 216 25309 33321 53 225 63125 83141 9I1SE9GBVE1 23 131 23411 43 216
66119 83317 99992.13324 43321 73524 99995 2362FIRIFNO KNOWN METE0RO- 66119 83317 99992.13324 43321 73524 99995 2362FIRIFNO KNOWN METEORO-
LOGICAL CONDITION ACCOUNTS FOR SIGHTING. NO PHYSICAL EVIDENCE.
NO INTERCEPTIONOR IDENTIFICATION YRAO KNOUN AIR TRAFFIC AT TIME OF NO INTERCEPTIONOR IDENTIFICATION YRAO KNOUN AIR TRAFFIC AT TIME OF
SIGHTING ENDSWO DHJTRAN.
RELEASED SUBJ TO CORRECTION
25/1510Z AUG

( PROJECT 10073 WORKSHEET
I. GENERAL
1. DATE 2. LOCATION 3. TINE
Local:
20 Me fhesinll Zebra:
4. WAS OBJECT OBSERVED FROM THE GROUND? Yes No
Naked Eye
i_] Binoculars
Tolescope
[Theodolito
5. WAS OBJECT OBSERVED BY GROUND RADAR? Yes No
By One Sot
□By Two Sets
By Three Sets
6. WAS OBJECT OBSERVED FROM THE AIR? Yes NO
A/C Observed Objoct
C]Interception Attempted
No Intercept Attempted
7. WERE AIRCRAFT SCRAMBLED TO INTERCEPT? Yes PNo
A/C Scrambled
Vicual ContactMade
A/I Contact Made
C]No Contact Mado []No Contact Mado
8. DID OBJECT CHANGE DIRECTION AT ANY TIME? Yes Yes No
□]Normal ]Normal
ClViolent
9. IF OBJECT WAS A "LIGHT", WAS IT: 9. IF OBJECT WAS A "LIGHT", WAS IT: ( Blinking
[I Steady [1 Steady
10. LENGTH OF TIME IN SIGHT: 111-15 Seconds
E11-5Minutes
I] Over l0 Minutes [] Over l0 Minutes
11. REPORTING AGENCY (Untt Number and Nailing Address)
II. ASTRONOMICAL DATA
12. WHAT ASTRONOMICAL ACTIVITT WAS NOTED?
13. DID OBJECT APPEAR TO ARCH DOWNNARD? L] Yes CINo
Th. DID OBJECT HAVE A TAIL? !! Yes JNo
15. DID OBJECT APPEAR TO DISINTEGRATE? T Yes CNo
16. TIME OF SIGHTING RELATIVE TO SUNRISE OR SUNSET (Data From AIr Almanac)
Night
C! Day X
Sunrise 10033
[]Sunset
III. AIRCRAFT DATA (.0
17. WERE AIRCRAFT NOTED IN AREA? Yes 9
10110
[]One Aircraft 9-
(]lore Than One Aircraft
18. WAS ANY SOUND HEARD? TYes CTNO
19. WERE THERE INDICATIUNS OF HIGH BACKGROUND NOISET  YOS C
CO. WAS THE OBJECT VIEWED ABOVE 45O ELEVATION? Yes CINo
AT1C Test Form 334 (13 Aug 52)

IV. BALLOON DATA
21. WERE BALLOONS RELEASED IN AREA? Yes
22. TIME SINCE SCHEDULED BALLOON RELEASE: Jinutes
23. POSSIBLE BALLOON LAUNCH SITES DOWNWIND OF SIGHTING:
Lightod? Deseriba
Location Typs Launching Agency Yes No Lighting
a.
b.
c.
d.
(attach overlay)
V. EVALUATION
21. EVALUATION OF SOURCE: 22. DETAILS OF REPORT:
Excellent Good
Good Good Fair
□Fair Fair Poor Poor
Poor Inaufficient to Evaluate Inaufficiant toEvaluate
Unreliable
Extremely Doubtful
Hoax
23. FINAL EVALUATION:
WasBalloon Was Astronomical
ProbablyBalloon ProbablyBalloon Probably Ascronomical Probably Ascrenomical
]PossiblyBalloon ]PossiblyBalloon Possibly Ast,onomical
Was Aircraft Other:
ProbablyAircraft
PossiblyAircraft InsufficientData For Evaluation
Unknown
24. COMMENTS:
f
ATIC Tost Form 334 (13 Aug 52)

PROJECT 10073 WEATHER DATA SI P
1. DATE OF OBSERVATION 2. TIME OF CBSERVATION 3. STATION OBSERVING
42 WINDS ALOFT:
ALTITUDE VELOCITY DIRECTION ALTITUDE
(feet) (knots) (degrees) (feot) (knots) (degrees)
0 25,000
1,000 30,000
2,000 35,000
3,000 40,000
4,000 45,000
5,000 50,000
6,000 55,000
7,000 60,000
8,000 8,000 65,000 65,000
9,000 70,000 70,000
10,000 75,000
12,000 80,000 80,000
14,000 14,000 85,000
16,000 16,000 90,000
18,000 18.000 95,000 95.000
20,000 100,000
5. WAS AN INVERSION LAYER NOTED? Yes CINo
(If yes, at what altitude? 一
6. WERE ANY THUNDERSTORMS NOTED IN AREA? □Yea No
(If yes, at what quadrant? C
7. CLOUD COVER: 8. VISIBILITY WAS
tenths at feet. MILES.
tenths at tenths at feet.
9. COMMENTS:
ATIC Test Form 333 (13 Aug 52)

11.atna
ACTION
2. a
RF078 20Avc520340
WPA150
YMA050M IFOR
JEDLS A247
OPOP JEPHQ JEDWP JEDEN 333
DE JEDLS 2B
OP 2008192
FM FLT OPR OLMSTED AFB MIDDLETOWN PENN
TO JEPHQ/DIR INTEL HQ USAF WASHDC
INFO JEDWP/AIR TECHINTELCEN WRIGHT-PATTERSON AFB OHIO INFO JEDWP/AIR TECHINTELCEN WRIGHT-PATTERSON AFB OHIO
JEDEN/CG ENT AFB COLORADO SPRINGS COLO
JEDWP/CG AMC WRIGHT-PATTERSON AFB OHIO
ATTN AT1AA-2C FLYOBRPT MAEO-8-20 RE AFL 222-5 ON 20 AUGUST 52 AT
APPROX 0310E A OF NEFFESVILLE PA APPROX THREE MILES FROM
LANCASTER PA REPORTED SEEING A STRANGE OBJECT WHICH HE FIRST THOUGHT
TO BE AN AIR PLANE. THE OBJECT WAS AT AN ALTITUDE OF APPROX 500
FT AND OBSERVED BY MR FORD AND TWO OTHER WITNESSES FOR SEVERAL
MINUTES. OLMSTED WEATHER AT THE TIME WAS CLEAR AND FOUR MILES WINDS
CALM.
22/1112Z AUG JEDLS

PROJECT 10073 WORKSHEET
I. GENERAL
1. DATE 2. LOCATION 3. TIME
Local:
3Aing 52 Phatran Arifilet Sunnli Anu bin Zebra:
4. WAS GBJECT OBSERVEO FROM THE GROUND? []Yes □ No
Naked Eye
CJ Binoculars
Tolescope
EtTheodolito
5, WAS OBJECT OBSERVED BY GROUND RADAR? You CLPNo
[]By One Sot
□By Tao Sets
By Three Sets
6. WAS OBJECT OBSERVED FROM THE AIR? Yos 020
A/C Observed Object
[C] Interception Attempted
[]No Intercopt Attempted
7. WERE AIRCRAFT SCRAMBLED TO INTERCEPT? Yes Ho
A/C Scrambled
Visual ContactMade
A/I Contact Made
C]No Contact Mado []No Contact Mado
S. DID OBJECT CHANGE DIRECTION AT ANY TIME? CPYos PYos No
CNormal ChNormal
CIViolent ClViolent
9. IF OBJECT WAS A "LIGHT", WAS IT: Blinking ( Blinking
[4Stoady
10. LENGTH OF TIME IN SIGHT: L11-15 Seconds L11-15 Seconds
1-5Mnutes 1-5 Mnutes
Over 10 Minutes
11. REPORTING AGENCY (Unit Number and Nailing Address)
Ai Whatt denice Hilachment Chahan Arilidl Si
II. ASTRONOMICAL DATA
13. DID OBJECT APPEAR TO ARCH DOWNNARD? L]Yes LEflo
. DID OBJECT HAVE A TAIL? [ Yes 1710
15. DID OBJECT APPEAR TO DISINTEGRATE? II Yes ILINo
16. TIME OF SIGHTING RELATIVE TO SUNRISE OR SUNSET (Data From Air Almanac)
Night
□ Day
Sunrise
[] Sunset
III. AIRCRAFT DATA
17. WERE AIRCRAFT NOTED IN AREA? Yes 19110
[]One Aircraft
]Nore Than One Aireraft
18. WAS ANY SOUND HEARD? 1 Yes CNo
19. WERE THERE INDICATIONS OF HIGH BACKGROURD NOISE? YOS TOHO
PO. WAS THE OBJECT VIEWED ABOVE LSO ELEVATION? Yos LINO
AT1C Test Form 334 (13 Aug 52)

IV. BALLOON DATA
21. WERE BALLOONS RELEASED IN AREA? rYos No
22. TIME SINCE SCHEDULED BALLOON RELEASE: Manutes
23. POSSIBLE BALLOON LAUNCH SITES DOWNWIND OF SIGHTING:
Lighted? Deseribe
Location Typa Launching Agency Yes No Lighting
a. Dhahian (20Auo'52
b. 21002
C. halin lsdanil
d. (20ug52
15002
(attach overlay)
V. EVALUATION
21. EVALUATION OF SOURCE: 22. DETAILS OF REPORT:
Excellent Good
Good Fair
□Fair Poor
Poor ]Insufficient to Evaluate Insufficient to Evaluate
Unreliable
ExtremelyDoubtful ExtremelyDoubtful
Hoax
23. FINAL EVALUATION:
Was Balloon Was Aatronomical Was Astronomical
ProbablyBalloon ProbablyAanomical Probably Anomical
PossiblyBalloon Possibly Astcuncmical
[]Was Aircraft []Was Aircraft Other:
[]Probably Aircraft Proboblx Airanoft
Possibly Aircraft Insufficient Data For Evaluation
Unknown
24. COMMENTS:
ATIC Tost Form 331, (13 Aug 52)

PROJECT 10073 WEATHER DATA SHF
1. DATE OF OBSERVATION 2. TIME: OF OBSERVATION 3. STATION OBSERVING
42 WINDS ALOFT:
ALTITUDE VELOCITY DIRECTION ALTITUDE
(foet) (knots) (degrees) (feot) (knots) (degrues)
0 25,000
1,000 30,000
2,000 35,000
3,000 40,000
4,000 45,000
5,000 50,000
6,000 55,000
7,000 60,000
8,000 65,000
9,000 70,000
10,000 75,000 75,000
12,000 80,000
14,000 85,000 85,000
16,000 90,000
18,000 95,000
20,000 100,000
5. WAS AN INVERSION LAYER NOTED? ClYes LINo
(If yes, at what altitude? 一
6. WERE ANY THUNDERSTORMS NOTED IN AREA? Yes No
(If yes, at what quadrant? )
7. CLOUD COVER: 8. VISIBILITY WAS
tenths at feet. MIIES.
feet. tenths at feet.
9. COMMENTS:
no weath. datu awwidu bli
ATIC Toat Form 333 (13 Aug 52)

VLATIA
Z.ATIA
3.0
C1 PRIORITY RESTRICTED V.C.e
TO HO USAF WASH DC
CG ADC ENT AFB COLO
COHDR MATS ANDREWS AFB HD
CG AWS WASH DC
FLY OB RPT: 1 CLEAR WHITE LIGHT APPERANT SIZE OF PIN POINT IN
THEODOLITE, SICHTED AT .292115Z. OBS BY THEODOLITE ON SURFACE,
LAT 26 DEG 17 MIN NORTH LONG 5S DEG 39 MIN EAST. OBJECT FOLLOMED
FOR 4 CONSECUTIVE MINUTES BEFORE BEING LOST WITH FOL BEARINGS.
( 1 MINUTE, ELEV ANGLE 34.3 DEG, AXIMUTH ANGLE 156. DEG; 2 HINUTES, 1 MINUTE, ELEV ANGLE 34.3 DEG, AXIMUTH ANGLE 156.0 DEG; 2 1INUTES,
ELEV ANGLE 57.6 DEG. AXIMUTH ANGLE 220,9 DEG: 3 MIN: ELEV ANGLE ELEV ANGLE 57.6 DEG. AXIMUTH ANGLE 22S.9 DEG: 3 MIN: ELEV ANGLE
89.9 DEG,. AXIMUTH ANGLE 550.2 DEG: 4 MINUTES, ELEV ANGLE 43.5 80.9 DEG,. AXIMUTH ANGLE 550.2 DEG: 4 MINUTES, ELEV ANGLE 43.5
DEG, AXIMUTH ANGLE D2S.2 DEG. NOT WITNESS TO OBS: OBJECT NOT VISIBLE
EXCEPT THRU THEODOLITE BUT TRACH OF OBJECT MADE BY SKILLED WEA
OBS. WEA CLEA VIS 15 MILES AT TIME OBS. DHAHRAN PIBAL 202120Z OBS. VEA CLEA VIS 15 MILES AT TIME OBS. DHAHRAN PIBAL 202120Z
059291290425194333975541353419635247342S85435 TERMINATED THE L1GHT 059291290425194333975341353419635247542S85435 TERMINATED THE L1GHT
FADE. BAHREIN ISLAND RAWIN 201509Z 9532925399333215322563 OEC FYI
THEE 831 FOLRQL 9999133131234194321663119 E1LRWGKSAJ 317999921 THEE 831 F0LR0L 9999193131234194321663119 EILRWGKSAJ 317999921
352443321735249999393625 NO KNOWN METEOR0L0GICAL CONDITI0H ACC0UNTS 352443321735249999333625 NO KNOWN METEOR0L0GICAL CONDITI01 ACC0UNTS
FOR SIGHTING. NO PHYSICAL EVIDENCE. NO INTERCEPTION OR IDENTIFICATION
ACTION. NO KNOWN AIR TRAFFIC AT TIME OF SIGHTING END SWO DHAHRAN ACTION. NO KNOWN AIR TRAFFIC AT TIME OF SIGHTING END SWO DHANRAN
216
G 1