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Spare Part Number
in NASA
Software Project Notebook
in NASA
Shuttle Project Notice KSC
in NASA
Standard Precision Navigator
in NASA
131516131517131519131518
Similar to SPN
ABUP - Auxiliary Back- Up Plate
ABV - Above
ABV - Air Bubble Vehicle
AC - Aerodynamic Center
AC - Comptroller Office
AC - Alternating Current
AC - Assembly Complete
View all in NASA