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Acronym: PPM

Category: NASA Acronyms

Meaning / Stands for:

	Acronym	Meaning
	SPAS	Shuttle Pallet Satellite (German)
	COA	Center Operations Area
	MTTFF	Mean Time To First Failure
	OAT	Overall Test
	SSA	S-Band Single Access
	PVRD	Purge
	MCC	Main Combustion Chamber
	JED	Julian Ephemeris Data
	LL	Lever Lock
	DP	Differential Pressure