Landing Systems

Fleet Landing Systems (LS) IPT (PMA213D) is responsible for acquiring, delivering and sustaining the Automatic Carrier Landing Systems (ACLS) equipped aboard CVN, LHA, and LHD ships. These systems provide all-weather airborne instrument recovery capability for all Navy and Marine Corps fixed wing aircraft.

Landing System Upgrade Program (LSUP)

The LSUP Program is the Life Cycle Extension (LCE) plan for the three AN/SPN systems, which provide instrument landing capability to fleet fixed wing aircraft. The AN/SPN 35, 41 and 46 are all past their original expected service lives and are in need of upgrading to remove obsolete components. Service life will need to be extended into the 2040s to provide safety of flight service for the Navy and Marine Corps fixed wing aircraft.


AN/SPN-46(V) Automatic Carrier Landing System (ACLS) is a precision approach landing system  (PALS) which provides electronic guidance to carrier-based aircraft and allows them to land in all-weather conditions with no limitations due to low ceiling or restricted visibility.  The AN/SPN-46 is the Fleet’s only fully automated, all-weather approach landing aid for carrier aircraft.


The AN/SPN-35C provides fleet air traffic controllers an all-weather precision approach radar system, for safe landing of aircraft onboard amphibious assault ships.


AN/SPN-41A/41B transmitting set provides all-weather instrument approach guidance from the ship, to the aircraft equipped with the AN/ARA-63 receiver group.  The AN/SPN-41A/41B is used as the ship’s Instrument Carrier Landing System (ICLS) to provide azimuth and elevation alignment information.