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Launch Complex 39, Pads A and B

KSC Release No. FS-1999-12-25-KSC

Fixed Service Structure (FSS)
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KSC-98PC-1179 - Fixed Service Structure (FSS)Fixed Service Structure (FSS) equipped with three swing arms which provide services or access to a Shuttle on the pad.
The FSS is each pad's most prominent feature, standing 347 feet from ground level to the tip of the lightning mast. The lightning mast itself, 80 feet tall and made of fiberglass, supports a one-inch stainless steel cable which starts from an anchor 1,100 feet south of the FSS, angles up and over the mast, and then extends back down to a second anchor the same distance to the north. Below the lightning mast is a hammerhead crane used for pad hoisting operations.

The FSS is equipped with three swing arms which provide services or access to a Shuttle on the pad. They are retracted when not in use. There are 12 floors on the FSS, positioned at 20-foot intervals. The first is located 27 feet above the pad surface. The FSS also provides an Emergency Egress System for astronauts.

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