lil 174 On the same day, while flying an H-19B aircraft near JANET in the oniwetok Atoll, the pilot crashed into the lagoon. The accident was a result of the pilot's being unable to maintain VFR flight during a heavy rain snower, A civilian passenger, Dr. Mark M, Mills of the University of California ladiation Laboratory was killed; however, four other persons aboard the aircraft survived without major injury. The aircraft was re- covervd from gome eight feet of water for investigative purposes and then salvaged, Cn 10 July 1958, an de21 aircraft crashed into the ocean near GuoNN in the uniwetok Atoll after encountering a material failure in the control system. This failure, nowever, could not be determined precisely inasmuch ag the aircraft sank in very deep water and was not recoverable, all per sons apoard the helicopter escaped without injury. An H-216 aircraft crasned near YVONNE Island in deep water on 14 August 1958. so injury to personnel was recorded. No passengers were involved. 4 blow-out of the master cylinder, which severed the engine i,,nition narness, was determined as the cause of the accident. Several otner incidents occurred during the operational pnuse of HAnvJPack, and these inciaents togetner with the major accidents emphasized bie nazaris of aircraft operation in the eniwetok vroving Ground. in one incident, a Be57- aircraft in flight exoerieucec failure of tae nose gear hydraulic actuator. ine runway was fodmeu to assist the AFWL/ HO