21deg32N&157deg06W Pacific unidentified aerial event — February 7, 1951

Disappeared about 4 deg. elevation. COMMENTS Insufficient data for evaluation in that duration not reported. Object was observed to be lighted as if by internal illumination. This object was observed at a distance of approximately 7.5 miles. Object was sighted at 19:57 hours at an azimuth of approximately 15 degrees and an elevation of approximately 30 degrees. Object was observed for a period of approximately 150 seconds, disappearing at an azimuth of approximately 85 degrees and an elevation of approximately 10 degrees. DOD DIR 5200.10 Transcribed text from the document: UNCLASSIFIED Traveling at a very slow speed, reported as circular in shape, lights seen by pilot of USAF aircraft 23 miles off Oahu, T.H. at 19,000 feet, on 7 February 1951. The object remained stationary for approximately 1 minute, then made a very sudden and rapid climb and disappeared.