Helicopter Sikorsky HO4S-3 Serial 55-549 Register N17378 1305 used by US Coast Guard USCG. Built 1953. Aircraft history and location Aircraft History For 1305 see also 2015 407gxp 54580 1305 US Coast Guard 1953-10-19USCG HO4S-3G d/d 19oct53 1962 redesig HH-19G May67 to civ 1955 flown by LCDR George F. Thometz, JR and LT Henry J Pfeiffer during Yuba City, CA Floods and with their crew saved 138 lives in 12 hours N17378 - Whisper Jet at Kirkland, WA from Aug93 Send Updates Use APP to upload photo @ (optional) When Now? / / Send