oldcrowcv63
Tech Sergeant
The IJN CV airborne force typically flew at altitudes above 10,000 feet with A6M escorts a few thousand feet higher. SCR-270 Radar typically detected at about 100 miles distant. In this case, Midway defenders had advanced warning based on a PBY report: (3V58 ) Lt. William Chase: "Many Planes, heading Midway, bearing 320 degrees, distance 150." This was followed shortly after (0553 LOCAL) by Sand Island RADAR detection at 93 miles, 310 degrees. altitude 11,000 feet: The distance difference was probably due to a PBY navigational error. 100 miles was enough time for immediately launched fighters to obtain altitude superiority for a force at 11,000 feet or a bit higher. When first sighted at Midway by Carey's defending MAG-22 Wildcat fighter element the famous call was: "Tally Ho! Hawks at Angels Twelve!" at 0612. Figuring a speed of advance of about 2.5 to 3 miles per minute, that constitutes a warning of about 30 minutes. With a visibility of about 20 miles, Carey's F4F-3 inteercept was thus about 40 miles out from Midway which roughly corresponds to the account in Prange.
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