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time and money. However, to deliver the future datalink capability required by the airlines, both ground and
airborne systems must have a transition to the next generation architecture.
The Mark III CMU offers a datalink user the next generation ARINC 758 CMU capable of providing the
datalink functionality to meet the industry demands for today and tomorrow.
1.3 Honeywell Datalink Experience, Products, and Services
Honeywell has been developing Datalink Management Units since the early 1980s starting with the ARINC
597 ACARS. Since that time, Honeywell has continuously evolved and introduced new systems, comprised
of the 724 ACARS (introduced in 1988), the Mark I 724B ACARS (introduced in 1989), and the Mark II User
Re-programmable ACARS (introduced in 1991).
Honeywell currently offers two go-forward CMU products. The Mark II CMU is offered for 724B or 758 wiring
installations. The 965-0758-001 PN is for 724B installations, while the 965-0758-002 is for ARINC 758
installations. The other CMU is our new Mark III CMU (PN 7519200-920), which is offered for ARINC 758
wiring solutions
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, and is described in this document.
Honeywell is the leading supplier of datalink systems, with over 100-datalink customers. This is significant
in light of the fact that at the beginning of the 1990s, Honeywell had only three customers. We contribute
this large growth due to the fact that we have continued to invest in datalink systems and technology. The
new Mark III is the latest in such product introductions.
Honeywell also developed the equivalent of an ACARS MU for the Boeing 777. This was the first dual and
integrated ACARS system and the first essential ACARS system.
Airbus uses a communications unit named the Air Traffic Services Unit (ATSU) which is designed and
manufactured by Aerospatiale. The ATSU is a Supplier Furnished Equipment (SFE) system but the AOC
applications software is provided as Buyer Furnished Equipment (BFE). Honeywell is the leading supplier of
ATSU AOC software, which is based on the same AOC software contained in the highly successful Mark II
CMU.
With our offering for the B-777, the ATSU and our CMU, Honeywell is the only manufacturer that can support
all three aircraft configurations.
Honeywell is also a leading supplier of datalink display systems. Whether it is a full-sized ARINC 739
MCDU, a compact ARINC 739 Multi-Input Display Unit (MIDU) or a compact CDU, there is a datalink display
system for all aircraft from air transport and regional to business jet and general aviation.
The Mark III interfaces with many avionics devices, particularly Flight Management (FM) systems.
Honeywell is the leading supplier of FMs, whether it is the advanced Pegasus platform in the air transport
arena or the NZ-2000 in the regional and business jet market. Honeywell also provides FM systems in its
integrated avionics solutions (AIMS, VIA, and Epic).
To complete a user's datalink capability, Honeywell also offers ARINC 740 cockpit printers, SATCOM, and
radio systems (HF and VHF).
In addition to datalink products, Honeywell offers supporting services. The Honeywell Global Data Center
(GDC) provides ground-based data services for users that do not wish to implement their own ground
infrastructure. GDC currently provides a turnkey solution for over 2,200 datalink equipped aircraft. This
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The 7519200-920 part number reflects the standard Mark III CMU designed for ARINC 758 for air transport aircraft.