Home1996 Treaties and Agreements ...Brazil (12820) – Memorandum of Understanding Concerning Flight of the Humidity Sounder for Brazil (HSB) Instrument on NASA’s Earth Observing System PM-1 Spacecraft hide Brazil (12820) – Memorandum of Understanding Concerning Flight of the Humidity Sounder for Brazil (HSB) Instrument on NASA’s Earth Observing System PM-1 Spacecraft TIAS Office of Treaty Affairs December 5, 1996 Space Cooperation Memorandum of understanding signed at Washington December 5, 1996; Entered into force December 5, 1996. Download attachment [116 KB] Tags Brazil Space Treaties