Seaof Japan Eof Vladivostok radar-visual unidentified-object report — December 1957

BRIEF SUMMARY OF SIGHTING: A projectile was sighted by the S/C Commander which passed over the tail of the aircraft at a low altitude, disappearing from sight. TEXT EXTRACTED FROM THE DOCUMENT: UNCLASSIFIED BRAG 6 16 DEC 22 H 12 DRQ 2464 PP REFSG DQ RAPR 248 TO CONER STH TAC RECON WG YOKOTA AB HONSHU JAPAN INFO RAPR/DEPFS'CIO UFO WRIGHT PATTERSON APB OHIO CDLRAP 5 FUCHU AT JAPAN FCR ATTC ATTNI DC CC-4-IGC 73-19628 THE SOYIET AIRMAN WHO FIRED ON AFG AIRCRAFT AS REPORTED TO US ATTACHE IN USSR BY MAJOR KRASOVSKTY CF SOVIET AIR FORCE WAS ON THIS AF AIRCRAFT. PP PAR TWO PP FIFTH AF CMA PROJ NR FOUR FIGHT FIVE DASH TEXT FROM THE DOCUMENT: PAGE TWO REPORT SIX FIVE SEVEN 0 UNCLASSIFIED MEN NR VICTORIA GA FOUR THREE ECON SO CMA THEY VISUAL SIGHTING TWO APR NINETEEN FIFTY SEVEN PILOT FIGHTING PILOT ONE THREE ONE PPH 2O SEVEN ONE THREE EIGHT ECON SIGHTING PP GNE VISUAL TWO NINE PECON PP ONE THREE THREE CHA PE ONE THREE THREE ONE TWO CMA FOUR FULL CMA CAPTAIN ONE ONE EIGHT THREE TWO ONE THREE CMA HEADING FIVE EAST CMA ONE ZERO FIVE THREE PECON PP STAR SIGH ALT PER FACT TWO FIVE FIVE ZERO CMA RADAR LOCK UP OBJECT ON BEARING FIVE THREE SEV EN THREE FOUR PECON PP NORTH ONE PECON FOUR EIGHTY EAST CMA TRUE HEADING TWO THREE ZERO CMA SPEED UNDETERMINED PP RADAR ALTITUDE TWENTY FIVE ZERO PECON CMA VISUAL ALTITUDE 17000 FEET CMA VISUAL SIGHTING BY PILOT SIDE TOWARDS TAIL END OF VISUAL RANGE PECON TWO FOUR THREE THREE WHEN OBJECT DISAPPEARED AND RADAR CONTACT WAS LOST PP SIGN OF THE OBJECT WHICH PASSED NEAR THE TAIL OF THE AIRCRAFT DESCRIBED TO HAVE A LONG TAIL BEHIND AND TRAVELED IN AN ARCHING COURSE DISAPPEARING. THE FOUR ZULU CHARACTER DISAPPEARED BACK INTO THE WATER WITH A TREMENDOUS EXPLOSION ABOUT THREE MINUTES AFTER BEING OBSERVED. A large number of unusual electronic signals have been observed in the Far East recently, as well as definite evidence of jamming activity in that area. Supporting case details: Reported special objects or artifacts: Radar system Physical traces or material: Radar data or reported radar return associated with Seaof Japan Eof Vladivostok radar-visual unidentified-object report — December 1957 Electromagnetic or instrument effects: Radar or sensor detection Institutional response / aftermath: Government or official action