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Case FileNARA NAID 28941466 · T1206 Roll 9

Project Blue Book Case File

Benton, PennsylvaniaApril 1952

Unidentified

Summary

On April 19, 1952, at 10:50 a.m. local time, radar operators at an air traffic control station near Benton, Pennsylvania, detected three unidentified objects on radar. The targets appeared as a normal flight of three aircraft in formation showing Mark X IFF (identification friend or foe). The objects moved at an average speed of 400 knots and flew at 12,000 feet altitude. The radar track showed three solid vertical lines on the radar scope. The objects remained on radar for 28 minutes before disappearing. A cold front was passing over the station at the time. The Air Force station considered the aircraft friendly and took no scramble action. The evaluation concluded: Unknown.

Reported location

Benton, Pennsylvania

Date of incident

April 1952

State / country

PA / US

Page count

3 scanned pages

USAF evaluation

unidentified

Microfilm

T1206, Roll 9

Original case file scans

Original case file · scanned by NARAPage 1 of 3
View transcribed text
PROJECT 10073 RECORD CARD

1. DATE: 19 Apr 52

2. LOCATION: Benton, Pennsylvania

3. DATE-TIME GROUP: Local 1050, GWT 1450, 1950

4. TYPE OF OBSERVATION: Ground-Visual [unchecked], Ground-Radar [checked], Air-Visual [unchecked], Air-Intercept Radar [unchecked]

5. PHOTOS: Yes [unchecked], No [unchecked]

6. SOURCE: Radar Operators

7. LENGTH OF OBSERVATION: 28 minutes

8. NUMBER OF OBJECTS: 3

9. COURSE: E

10. BRIEF SUMMARY OF SIGHTING: Identified as friendly a/c.

11. COMMENTS: [blank]

12. CONCLUSIONS: Was Balloon [unchecked], Probably Balloon [unchecked], Possibly Balloon [unchecked], Was Aircraft [unchecked], Probably Aircraft [unchecked], Possibly Aircraft [unchecked], Was Astronomical [unchecked], Probably Astronomical [unchecked], Possibly Astronomical [unchecked], Other [unchecked], Insufficient Data for Evaluation [unchecked], Unknown [checked]

ATIC FORM 329 (REV 26 SEP 52)
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Source: National Archives Catalog · NAID 28941466