1st Lt John H Prowell Jr pilot of P-39Q, 44-2719, 301st FS, 332nd FG, 12th AF, lost on return from convoy patrol, radio noted defective during flight and seemingly, lost sight, of wingman in manouvre, possible engine failure, A/C crash site located approx 30 miles SSW La Cosa, oil slick and sea marker dye spotted, also dinghy, but pilot not recovered. 25th April 44. Posted MIA initially, later DNB. MACR 13687.