nsfw:racy: Possible ocr: Onctricnl Pow Themmal Contral SdarArags SRalaor. Paces Batey. Fadacor. Pmes AltifudeLkturmination Corfral Cocabinediath Sersor Aaleg Sal Letcta Spin Sun Sercar ALLOWABLE CUNTAMINATION LIMITS AND PREDICTIONS OF END - OF LIFE CLEANLINESS are important considerations in satellite maintenance. Experts determine these limits and predic- tions for each sensitive surface. Pictured here are the contamina- tion-sensitive surfaces on the Global Positioning System (GPS) satellites.