Figure 2-7.—AN/SPS-40E radar system.
System overhaul and restoration are performed on
AN/GPN-27 (ASR-8)
a turn-around basis every 10-15 years by naval
shipyards or private contractors as directed by
The Airport Surveillance Radar AN/GPN-27 is used
NAVSEA. Antenna and pedestal restoration is done on
at naval air stations (NAS) and Marine Corps air stations
(MCAS) to detect aircraft within 60 nautical miles of
a turn-around basis, with the assembly aboard ship
the station and to generate plan position indicator (PPI)
replaced about every 3 years.
information for aircraft control.
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