|Mission type||ISS resupply|
|Mission duration||134 days|
|Spacecraft type||Progress-M s/n 350|
|Start of mission|
|Launch date||11 August 2004, 05:03:07 UTC|
|Launch site||Baikonur, Site 1/5|
|End of mission|
|Decay date||22 December 2004,|
|Perigee altitude||352 km|
|Apogee altitude||363 km|
|Epoch||11 August 2004|
|Docking with ISS|
|Docking port||Zvezda aft|
|Docking date||14 August 2004, 05:01:08 UTC|
|Undocking date||22 December 2004,|
|Time docked||131 days|
Progress M-50 (Russian: Прогресс М-50), identified by NASA as Progress 15P, was a Progress spacecraft used to resupply the International Space Station. It was a Progress-M 11F615A55 spacecraft, with the serial number 350.
It remained docked for 131 days before undocking at 19:37:02 UTC on 22 December 2004. to make way for Progress M-51. It was deorbited at 22:32:06 UTC on 22 December 2004. The spacecraft burned up in the atmosphere over the Pacific Ocean, with any remaining debris landing in the ocean at around 23:23:38 UTC.
Progress M-50 carried supplies to the International Space Station, including food, water and oxygen for the crew and equipment for conducting scientific research.