Hardware AtlasSupplier reference Explore in 3D

AVIATION / Avionics & electrical / REVIEWED 2026-09-11

D03Navigation & air-data sensors

Measure position, motion, and air conditions.

Manufacturers & products

Navigation uses several complementary sources: inertial motion, satellite position, air data and landing/radio aids. Their integrity and integration matter as much as nominal accuracy.

Program applicability is stated for each listing. 737NG, 737 MAX, and other aircraft examples are distinct configurations; listed products are not automatically interchangeable or approved for installation.

manufacturer

Honeywell Aerospace

Air Data Inertial Reference System

Combines air-data and inertial reference functions; the listed HG2030BE variants identify Airbus applications. [2]

Program / application

Other aircraft — listed Airbus variants; no 737 HG2030BE fit established [2]

Custom program inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

View product & inquiry route

manufacturer

Collins Aerospace

GLU-2100 multi-mode receiver

Integrates navigation and landing functions with software-dependent satellite augmentation capabilities. [4]

Program / application

Air-transport MMR candidate; exact 737 effectivity unverified [4]

Custom program inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

View product & inquiry route

manufacturer

Thales

TopStar C GNSS receiver

Civil GNSS receiver offering intended to enable satellite-based approach functions. [3]

Program / application

General aircraft GNSS capability; 737 applicability unverified [3]

Custom program inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

View product & inquiry route

manufacturer

Universal Avionics

UNS-1Fw integral GPS/SBAS

Includes a GPS/SBAS receiver within the flight-management navigation computer. [1]

Program / application

Other retrofit aircraft; 737 applicability unverified [1]

Custom program inquiry

Contact the manufacturer or aircraft OEM for the applicable approved program and configuration. This is an inquiry route, not an assertion of stock, price or installation eligibility.

Product scope & qualifications

Integrated FMS/receiver, not a standalone inertial or air-data sensor.

View product & inquiry route

What remains unverified

Public source set does not establish the exact 737NG sensor suite or comparable independent accuracy/latency measurements.

Where it comes from

A company address is shown separately from a published factory location. Request the manufacturing site and lot traceability for the exact part when sourcing.

What to compare

Measured quantities
Distinguish position, attitude, airspeed, pressure, height and approach guidance.
Accuracy and drift
Require stated confidence level, alignment and outage conditions.
Integrity and continuity
Accuracy alone does not establish suitability for an approach operation.
GNSS interference response
Ask about detection, monitoring and behavior during loss or corruption.
Update and latency · Hz / ms
Dynamic guidance depends on timely, synchronized sensor outputs.
Interfaces and installation
Antenna, probe, air-line, alignment and bus requirements are product-specific.
Redundant architecture
Identify independence and cross-checks among sensor channels.
Software and aircraft approvals
Confirm the installed version supports the intended operational capability.

Selection & integration notes

Keep bare inertial sensors, complete ADIRUs and integrated navigation receivers separate in comparisons.

Published product examples

2 REFERENCES

Specifications belong to the named product and configuration.

Honeywell four-MCU ADIRSHoneywell Aerospace

Packaging: 4 MCU[2]Manufacturer description of the third-generation ADIRS package.

HG2030BE variants on this page are linked to Airbus platforms; the packaging value does not establish a 737NG unit.

Example sources [2]

UNS-1Fw integrated GPS/SBASUniversal Avionics

Receiver channels: 12[1]Internal GPS/SBAS receiver in the manufacturer's FMS description.

Receiver is part of the NCU; do not compare its channel count directly with an ADIRU drift specification.

Example sources [1]

Sources & references

REVIEWED 2026-09-11

Manufacturer pages and technical documents support the linked claims. A review date is not a publication date or stock check.

UNS-1Fw Universal FMS Universal Avionics · Publication date not stated
Remote NCU, GPS/SBAS receiver, dimensions, mass, interfaces and power.
Accessed 2026-09-10
Air Data Inertial Reference System Honeywell Aerospace · Publication date not stated
Four-MCU ADIRS architecture; HG2030BE variants list Airbus applications.
Accessed 2026-09-10
TopStar C Thales · Publication date not stated
Civil GNSS receiver offering; detailed sheet requires form access.
Accessed 2026-09-10
GLU-2100 Multi-Mode Receiver Collins Aerospace · Publication date not stated
MMR navigation/landing capability and software-dependent SBAS/GLS functions; revision 7/24.
Accessed 2026-09-10