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This document sets forth the characteristics of the Global Navigation Satellite System (GNSS) Landing System Sensor Unit (GLSSU) with a built-in VHF Data Broadcast (VDB) receiver. The intent of this document is to provide general and specific design guidance for the development of GLSSU for airline use. It describes the desired operational capability of the GLSSU and the standards necessary to ensure interchangeability.

This document sets forth the characteristics of the integrated Global Positioning System (GPS)/Global Orbiting Navigation Satellite System (GLONASS) sensor unit (GNSSU) portion of a GNSS system intended for installation in commercial aircraft. The intent of this document is to provide general and specific design guidance for the development of GNSS sensors for airline use. It describes the desired operational capability of the GNSS system and the standards necessary to ensure interchangeability.

This document sets forth the characteristics of the GNSS Landing System Sensor Unit (GLSSU) intended for installation in commercial aircraft. The intent of this document is to provide general and specific design guidance for the development of GLSSU for airline use. It describes the desired operational capability of the GLSSU and the standards necessary to ensure interchangeability.

ARINC Characteristic 755 defines a multi-mode receiver capable of providing flight path deviation guidance (corrections) to the aircraft during the approach and landing phase. The data source may be from an Instrument Landing System (ILS), a Microwave Landing System (MLS) or an GNSS Landing System (GLS). Supplement 5 adds annunciations defined in RTCA/DO-253D – MOPS for GPS LAAS Airborne Equipment. GNSS Data and GLS Config Validity ARINC 429 Labels are also updated. The range for Selected Glide Path Angle is corrected.

The GNSS sensor standard integrates Global Positioning System/Global Orbiting Navigation Satellite System (GLONASS) sensors. The sensor provides position information for display to pilots, and data to other navigation systems on the airplane.

This standard provides design guidance for the development of GPS sensors for airline use. It describes the operational capability of the GPS receiver and the standards necessary to ensure interchangeability. GPS provides navigation data to pilots and provides data for use by other aircraft systems.