Helicopter Sikorsky CH-53C Serial 65-340 Register 70-1630 used by US Air Force USAF. Aircraft history and location Aircraft History 70-1630 US Air Force Sikorsky MH-53M Pave Low IV USAF conv to MH-53J conv to MH-53M 1981 A ETAS 1980-86 I flew this with 601st TASS, Sembach airbase, Germany 601st TASS 2004-07-11 B EGUN MH-53M type 21st SOS homebase 21st SOS 2007-06USAF early Jun07 type:MH-53M in Poland for support HMX-1. 21st SOS 21st SOS Send Updates Use APP to upload photo @ (optional) When Now? / / Send