Improved Fresnel Lens Optical Landing System (IFLOLS) Provides the pilot with a
visual indication of relative position with respect to a prescribed glide slope.
Improved Precision Approach RADAR Trainer (IPART) Standalone PAR
proficiency trainer that simulates the appearance and functions of an OJ-333 RADAR
Integrated Launch and Recovery Television Surveillance System (ILARTS)
Records aircraft launches and recoveries through remote cameras and monitors.
Integrated Voice Communication Switching System (IVCSS) Digital non-blocking
Interrogator Set Enhances the RADAR operator's PPI display by replacing the
conventional IFF response from the aircraft with a target symbol that represents a
variety of aircraft status conditions and provides two sets of numbers to indicate direct
identification and altitude.
Joint Electronics Type Designation System (JETDS) Standardize system for
identifying electronic material and associated equipment within the DOD.
Latitude (L) Parallels that are used to locate points north or south from the equator
(0 L) to the poles (90 L). Parallels of latitude are always parallel to the plane of the
Lenticularis clouds Clouds shaped like lenses or almonds; normally formed by wind
flow in mountainous areas.
Longitude (LO) Meridians that are used to locate points east and west of the Prime
Meridian and are measured in degrees of arc from 0 to 180. LO is based on great
circles passing through the poles. These great circles are divided in half by the poles,
and each half is assigned a value of east or west.
Magnetic Heading (MH) Heading measured in relation to magnetic north.
Manually operated visual landing aid system (MOVLAS) Emergency landing system
that is used when the primary optical landing system is rendered inoperative.
Military Operations Area (MOA) Airspace designated outside of Class A airspace to
separate or segregate certain nonhazardous military activities from IFR traffic and to
inform VFR traffic where these activities are being conducted.
National Geospatial-Intelligence Agency (NGA) Responsible for managing and
distributing all Department of Defense (DOD) navigational charts and publications.
NICE Inform Browser-based suite of applications designed specifically for use in the
Public Safety and Air Traffic Control communities. NICE Inform allows users to build
scenarios based on actual incident timelines and provides a means for gathering and
storing incident reports.
Nimbostratus clouds Thick and dark gray clouds that are formless in appearance.
Obstruction lights Placed on all elevated obstructions on the airport and all other
obstructions within a given glide angle of the airport.