Thule, Greenland, June 1951June 1951

Insufficient Data

Summary

On June 10, 1951, near Thule, Greenland, the crew of a Military Air Transport Service C-54 reported two apparent contrails at about 0100 (1:00 a.m.). The crew saw the first contrail about 60 miles south of Thule while flying at 3,900 feet, and the second nearly over Thule while at about 6,000 feet during a descent.

Several crew members looked at the contrails to decide if they were real or a weather effect. The captain said all agreed they appeared to be contrails, but the crew was not fully familiar with arctic weather that can create similar formations. They estimated the contrails were at 30,000 to 40,000 feet. Temperature readings suggested a slight inversion was present.

The sky was clear in the area of the sighting, with some light broken clouds lower down. The Air Force recorded the case in Project 10073, its official file for unidentified flying object reports. The conclusion was contrails, listed as a possible weather phenomenon.

Reported location

Thule, Greenland, June 1951

Date of incident

June 1951

State / country

? / XX

Page count

2 scanned pages

USAF evaluation

unknown

Microfilm

T1206, Roll 8

: ; PROJECT 10073 RECORD CARD : . | { 1. DATE 2. LOCATION 12. CONCLUSIONS 0 Was Balloon 9 June 1951 Thule, Greenland 0 Probably Balloon 3. DATE-TIME GROUP 4 TYPE OF OBSERVATION | Possibly Balloon Locel rE OD Ground- Visual! O Ground-Rador Probably Aircroft omy_0/0100Z2 XXAir Visual O Air-Intercept Radar DO Possibly Aircraft S. PHOTOS o 0 Was Astronomical 0 Yes O Probably Astronomical 3 No Milita 0 Possibly Astronomical Ee EE ern TTI r—— 7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS | 9. COURSE # Other POSS wx phen UNK 0 eo Dota for Evaluation 2 Unk 0 nknown 10. BRIEF SUMMARY OF SIGHTING 1. COMMENTS 2 #4 contrails observed by MATS A/C (Contrails) | ATIC FORM 329 (REV 26 SEP 52) #4