28937492.pdf

04/04/52

ATIC NO. ---
AF NO. ---
REPORT NO. AF Letter
DATE OF REPORT 3 April 1950
TIME OF RECEIVING 2305 EST
SHAPE Light Source
BIRTH ---
COURSE Erratic (W to S to N)
NO. IN GROUP 1
MODES ---
IN POS SHETCHES ---
Temporary ATIC Form 329
(2 Jan 52)

DATE OF INFO 3 March 1950
LOCATION Selfridge AFB Mich
SOURCE AF Pilot
DATE IN TO ATIC ---
COLOR White
BREED ---
ANTITUDE 5,000'
LENGTH OF TIME OBSERVED 4 Min.
TYPE OF OBSERVATION Ground
Descended vertically before
PARTNERS fast horizontal flight
Source observed the erratic flight of this
light. Compared it to house window at
night viewed from 30 yar…

22
CONFIDENTIAL
HEADQUARTERS
CONTINENTAL AIR COMMAND
MITCHEL AIR FORCE BASE, NEW YORK
Classified
By Auth: CG JSR&D
APR 1950
(Date) (Initials)
INIT 373.5 (E)
APR 1950
503.2
SUBJECT: Unidentified Flying Object
TO: Director of Intelligence, Headquarters United States Air Force, Washington 25, D. C.

1. Attached for your information are two narrative reports concerning radar sighting of an unidentified flying object.

2. The fact that the object was sighted on the scopes of two (2) radars is considered worthy of special note.

3. Comment of technical experts, this headquarters, was solicited a…

SECRET

INT 373.5 (E), "Unidentified Flying Object", (cont)

observed on the CPS-4 height-finder before being observed on the CPS-5 surveillance radar set. This follows logic and field experience, inasmuch as the high altitude coverage of the CPS-5 is known to be poor and the antenna is not capable of being automatically tilted as in the case of the CPS-4 on which the controller may tilt the antenna within wide limitations to observe any high altitude or high angle objects. It is to be noted that previous field experience with a CPS-5 surveillance radar set has indicated that targets picked up…

UNCLASSIFIED
10 March 1950
NARRATIVE REPORT OF
1ST LT 661ST AC & W SQ, SELFRIDGE AFS, MICH

On the first occasion of noticing the strange object 3 Mar 50, at 2305, I had just come from the Selfridge AFB Officers' Club and as I turned down Wright Blvd. on the way to the main gate I noticed a strange object directly over the Post Exchange Bldg., descending vertically at a slow rate. I stopped the car and watched this object descend to an approximate height of 5,000 feet, hovering there for approximate one (1) minute then proceeding in a westerly direction to approximately fifty (50) miles we…

UNCLASSIFIED
CONFIDENTIAL

The second experience was as follows. I went on duty as
Controller at 1630, 8 March 1950. At 1946 hours a blip was pointed
out to me that was at 270°, sixty-eight (68) miles, 40,000 feet
(measured by the HRI scope). We (Cpl- and I) watched this blip
and it did not move for three (3) minutes, then faded. At 2002 hours
the target was picked up again and it was at 40,000 feet, lateral
movement was detected in a northeasterly direction; at this time I
estimated the speed at 1,500 m.p.h. At 2006 hours a target appeared
at 350°, fifty-eight (58) miles at 45,000 feet. There…

COORDINATION: ATSC Form No. 10-500 (Rev. 71 Oct 43)
CG OR DEF CO
(PRINT SYMBOL AND INITIALS IN APPROPRIATE BLOCK)
UNCLASSIFIED

Department of the Air Force
HEADQUARTERS UNITED STATES AIR FORCE
Washington

5D-OSI/DML/fmn

5D 24-21
14 March 1950

SUBJECT: "PROJECT GRUDGE" Unconventional Type Aircraft
(Unexplained "Blip" on Radar Scopes Caused by
Metallic Targets)
SPECIAL INQUIRY

TO: Commanding General
Air Materiel Command
Wright-Patterson Air Force Base
Dayton, Ohio
ATTN: MCIAXS

The attached copies of a spot report regarding the above subject,
dated 10 March 1950, are forwarded for your inform…

CONFIDENTIAL
UNCLASSIFIED
PARAPHRASED THE AIR FORCE
HEADQUARTERS UNITED STATES AIR FORCE
WASHINGTON
The Inspector General USAF
23th District Office of Special Investigations
Box 326, RPA, Detroit 32, Michigan
10 March 1950
SPOT INTELLIGENCE REPORT
SUBJECT: Unconventional Type Aircraft
(Unexplained "Blip" on Radar
Scopes Caused by Metallic Targets)
TO: Director of Special Investigations
Headquarters United States Air Force
Washington 25, D. C.
ATTN: Counter Intelligence Division

1. SYNOPSIS: 1st Lt. [REDACTED], Radar Operator and Controller, 661st AC & W Squadron, Selfridge Air Force Base,…

CONFIDENTIAL
UNCLASSIFIED
10 Mar 50

Subject: Unconventional Type Aircraft
(Unexplained "Blip" on Radar
Scopes Caused by Metallic Targets)

Lt. [redacted] requested that the radar crews record in the log various readings and coordinate the various scopes. When [redacted] crew first observed the unidentified "Blip", he noticed a very definite rapid decrease in altitude on "ERI" scope to about 15,000 feet. The time was not noted. The "Blip" was again picked up at approximately 2046 hours on the "PPI" scope.

To facilitate understanding of bearings and zones, a 360° circle divided into four (4) e…