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5/28/2018 Cpdlc Data Link
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Technical White Paper CPDLC Data Link
With global air traffic expected todouble in the next 20 years to over1 billion flights, upgrades to AirTraffic Control systems will become
necessary in order to preventreductions in airspace efficiencieswhilst maintaining acceptable levelsof safety. Additional requirementsfor data link on aircraft areanticipated over the next 5-10years to meet this need for newtraffic management systems.
Data link solutions provideairline operators with significantbenefits at reduced cost, includingenhanced flight operationsefficiency and lower airlinemaintenance, administrationand air traffic control costs.
With new statistics and headlines relating to
increased air traffic and the environmental
damage this causes being published on an
almost daily basis, it is evident that air traffic
management systems in Europe and theUnited States need to be modernised. The
response of the US and the European Union
to this situation is equally well documented,
with both EUROCONTROL and the FAA
taking the lead in the modernisation of the
ATM EcoSystem. The Single European Sky
ATM Research (SESAR) is currently in its
development phase (2009-2016) with initial
deployment in some technology areas already
progressing. Once complete, this should
facilitate a threefold increase in capacity and a50% reduction in air navigation costs, as well
as a reduction in an aircrafts environmental
impact by up to 10% per flight.
The Federal Aviation Administrations (FAA)
Next Generation Air Transportation System
(NextGen) is the US equivalent to SESAR. This
system will be implemented in stages between
2012 and 2025, and will save 1.4 billion gallonsof fuel and 14 million tonnes of CO2 by 2018.
The system is anticipated to reduce delays by
35%, adding up to $23 billion in benefits by
2018 compared with 2010, according to the
FAA. Data link solutions represent the key to
future global Air Traffic Management (ATM)
systems, and both SESAR and NextGen
are defining the standards and validating
the systems of tomorrow, today. The Single
European Sky - Data Link Services (Link 2000
/ SES-DLS) is being deployed now. The aircraftimprovements defined and validated during the
development phase of SESAR will start to be
deployed in the 2016-2018 timeframe.
Controller Pilot Data LinkCommunication (CPDLC) -
Data Link Mandate
Flight Operations Airline Maintenance Airline Administration Air Traffic Control
Data Communications
1
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Although complex in name, PM-CPDLC is
straightforward in practice: similar to text
messaging on cell phones, this system allows
pilots and Air Traffic Control to send canned
data messages between the ground and the
aircraft. CPDLC messages enable routine
tasks that can take up to 50% of a controllers
time to be automated. Messages include
standard ATC clearances ACL (e.g. Climb
to level 350) or AMC (e.g. microphone
check) and are intended to augment ATC
voice communications and provide additional
air traffic control capacity in high density ATC
environments.
CPDLC is not a new technology, and air traffic
controllers and pilots have been using these
text messages for many years in the existing
Future Air Navigation System 1/A (FANS1/A),
used in trans-oceanic flights.
There are various forms of data link in operation
today, including AOC, ATC, ADS as part of ATS,
FIS (D-ATIS) and A623 applications that include
D-ATIS. In addition, clearances such as Pre-
Departure Clearances are supported via A623
messages.
The European Commission mandated the
installation of Protected Mode Controller Pilot
Data Communication (PM-CPDLC) for forward
fit aircraft starting from January 1, 2011.
This mandate is the first of a number of
expected compulsory upgrades to the data link
systems on aircraft. The SES-DLS mandate is
expected to be followed by additional data link
requirements.
FAAs NextGen Air Traffic
Management Systemrequirements
are expected in 2014. Initial deployment
is expected to be centered on FANS
1/A+ with VDL Mode 2, followed by
harmonisation with Europe by 2025 as
reflected in NextGen Advisory Committee
(NAC), dated 02/2012.
SESARrequirements in work (SC-214),
project operational usage starting in the
2016-2018 time frame. The Airbus plan is to
have an ATSU capable of SC214 in 2016.
North Atlantic Trackswill have preferred
routings for FANS1/A equipped aircraft from
2013 on limited tracks, and from Feb.2015on two core NAT tracks above FL340
Today three versions of CPDLC are envisioned:
Future Air Navigation System (FANS1/A+)
Link 2000/SES-DLS
SC-214.
Data link solutions represent the key to future globalAir Traffic Management (ATM) systems, and bothSESAR and NextGen are defining the standardsand validating the systems of tomorrow, today.
Data Link Upgrade Mandate Timings
20092010
2011
2012
2013
20142015
2016
2017
2018
2019
2020+
Eurocontrol PM-CPDLCRetrofit DateFebruary 5, 2015
North Atlantic TracksFANS1/AMandated on limited tracksthen on two core NAT tracks
Eurocontrol PM-CPDLCForward FitJanuary 1, 2011
Eurocontrol PM-CPDLCEnd of FANS1/A ExemptionOn Forward FitJanuary 1, 2014
FAA / NextgenTentative Deployment2014 - 2020
European SESAR(the Single European Sky
ATM Research Programme)(Operational phase 2016-2018)
2
Single European Sky Data Link Services (SES-DLS) Mandate - PM-CPDLC
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AOC Data Link Benefits
Honeywells data link solutions
support not only ATC applications,
but include an extensive AOC
capability.
1. Improved communicationwith the flight crew, in
terms of time and accuracy.
2. Improved communication
and information dissemination
within an airlines operation.
3. Increased information
for cost reduction.
4. Reduced pilot workload.
5. Reduced delay times.
6. Increased accuracy
for flight crew pay.
7. Reduced activity by
airline personnel.
8. Improved operational planning.
9. Reduced impact on fuel cost.
10. Improved maintenance
operation.
11. Improved passenger service.
12. Emergency/Hijack
awareness notification.
13. Voice communication
cost reduction.
Technical White Paper CPDLC Data Link
Each of the three versions of CPDLC supports
the needs of Air Traffic Management (ATM) to
varying degrees, outlined as follows:
FANS 1/A+, developed in the 1990s by
Honeywell, Boeing and Airbus, is primarily
used for Trans-Oceanic flights. FANS utilises
Aircraft Communications Addressing and
Reporting System (ACARS) over VHF andsatellite communication for transmission of
messages. The use of ACARS restricts the
amount of air traffic on the system due to
bandwidth limitations of the technology.
Later upgrades included ACARS over HFDL.
The FAA is currently planning on utilising
FANS 1/A+ over U.S. continental airspace as
an initial ATC data link deployment phase; but
requiring operators to use VDL Mode 2 radios
for improved performance.
SES-DLS.The Data Link 2000+DLS
implementation mandate in Europe provides
the ground and airborne infrastructure
for future ATM.SES-DLS installs the
Aeronautical Telecommunications Network
(ATN) and requires VHF Data Link Mode 2
(VDL-M2) radios on aircraft to remove the
bandwidth limitations of the ACARS/Satellite
system.
When directly integrated into the Flight
Management system, FANS2/B+ is often
referred to as the SES-DLS/Link 2000
solution.
SC-214/WG78.To investigate future data
link requirements the FAA and EUROCAE
have established a joint committee SC214 /
WG78.
FANS utilises Aircraft Communications Addressingand Reporting System (ACARS) over VHF and satellitecommunication for transmission of messages.
3
Data Link Service
ATC Comm. Management (ACM)ATC Clearance (ACL)
ATC Mic Check (AMC)
4D Trajectory Data (4DTRAD)2
Departure Clearances (DCL)
Taxi In/Out (D-Taxi)
Flight Pan Intent (FLIPINT)
In Trail Proceedure (ITP)
Operational Terminal Info Services (D-OTIS)
Hazardous Weather (D-HzWx)
Runway Visual Range (D-RVR)
Digital Automatic Terminal InformationServices (D-ATIS)3
Not Supported Partially Supported Supported
1 FANS 2 is Boeings name for highly integrated, seamless FANS 1+ and PM CPDLC/CM ATN systems. Airbus uses FANS B+to signify PM CPDLC/CM ATN system. 2Uses CPDLC and ADS-C. 3Is part of D-OTIS functionality.
FANS 1/A+ SES-DLS
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Departure En Route Approach LandingTake-OffTaxi Taxi
From Aircraft
Link Test/Clock
Update
Fuel/Crew
Information
Delay Reports
Out
To Aircraft
PDC
AGIS
Weight and Balance
Airport Analysis
Dispatch Release
Flight Plan
Load FMC
To Aircraft
ATIS
Weather Reports
To Aircraft
ATC Oceanic
Clearances
ATIS
Weather Reports
Reclearance
Ground Voice
Requests
(SELCAL)
To Aircraft
Gate Assignment
Connecting Gates for
Passengers and Crew
ATIS
Off Report Engine Data Position Reports
Weather Reports
ETA Updates
Engine Parrameters
Maintenance Reports
Provisioning
Gate Requests
Special Requests
Engine Information
Maintenance Reports
On In
Fuel Information
Crew Information
Fault Data (from Central
Maintenance Computer)
Closeout
From Aircraft From Aircraft From Aircraft From Aircraft From Aircraft From Aircraft
Data link also allows users to save messages
for future reference and trend analysis.
Improved information delivery speed can
help eliminate delays, providing information
punctually and to multiple parties. Information
sharing is also easier, as electronic information
can easily be sent to multiple destinations,
which is difficult with voice communications.
Many global airlines now use data link as the
main channel of communication between
aircraft and ground crew. In addition, a
significant proportion of this communication
is automated. Using data link systems
avoids common communication problems
such as unclear radio communication or
misinterpretation due to language differences
or poor clarity.
Data link also helps to increase the speed of
information dissemination, both to and from
the aircraft. For example, an alert regarding a
maintenance or exceedance condition such
as engine overheating can be automatically
sent to Maintenance and Engineering, and a
delay message sent to Flight Operations and to
personnel on the ground at destination as soon
as the fault is detected by aircraft systems.
Using data link systems avoids common communicationproblems such as unclear radio communication ormisinterpretation due to language differences or poorclarity.
Typical ACARS Data Link Applications
4
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Honeywell is one of the worlds leading avionics
suppliers and is the only company selected to
contribute to both the SESAR and NextGen
programmes. Honeywell solutions are currently
validating tomorrows data link solutions and
incorporating tomorrows system requirements
into todays products.
Honeywell solutions are mapped through
upgrades, STC, TC and platform centric
solutions for all major aircraft platforms
including Boeing, Airbus and Embraer.
Technical White Paper CPDLC Data Link
Honeywell continues to lead the way in ATMtechnologies, and is the only company globallythat has been selected to contribute to both theSESAR and NextGen programmes.
54Updates & Retrofit available from Honeywell
CPDLC Solutions by Aircraft TypeA/C Type FANS-1/A/A+ FANS-2/B+ Standalone
ATNUpgrades/Minimum Configuration Required
B717 Option4 N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade , VDL Mode2upgrade of VHF Mode 0/A and MCDU or MIDU upgrade
B737 Classic N/A N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade, VDL Mode2upgrade of VHF Mode 0/A and MCDU (not HON on B737) orMIDU upgrade
B737 NG Option Future Option CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade, VDL Mode2upgrade of VHF Mode 0/A and MCDU (not HON on B737) orMIDU upgrade
B747 Classic N/A N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade CMU, VDLMode2 upgrade of VHF Mode 0/A and MCDU or MIDU upgrade
B747-400 Option N/A CMU Solution4 VDL Module 2 upgrade of VHF Mode 0/A or upgrade FMS to NGFMS or provide a Federated Solution
B747-8 Option Option N/A NG FMS
B757/B767 Option (with Pegasus FMS)4 N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade , VDL Mode2upgrade of VHF Mode 0/A and MCDU or MIDU upgrade
B777 Option Future Option(with AIMS-2)4
N/A VDL Mode 2 upgrade of VHF Mode 0/A and AIMS upgrade
B787 Standard Option N/A B787 CMF
MD-80 N/A N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade, VDL Mode2upgrade of VHF Mode 0/A and MCDU or MIDU upgrade
MD-90 Option (with Pegasus FMS)4 N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade, VDL Mode2
upgrade of VHF Mode 0/A and MCDU or MIDU upgradeMD-10/11 Option N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade, VDL Mode2
upgrade of VHF Mode 0/A and MCDU or MIDU upgrade
Airbus WB N/A N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade, VDL Mode2upgrade of VHF Mode 0/A and MCDU or MIDU upgrade
Airbus SA Option (FANS-A+) Option (FANS-B+) CMU Solution(via STC fornon-ATSUequipped a/c)
For A320 with Airbus ATSU: VDL Mode 2 and non-HON upgrade(ATSU, MCDU). For aircraft not having an Airbus ATSU, CMUMark II option for standalone ATN solution.
Airbus LR Standard (FANS-A+) N/A N/A With Airbus ATSU: VDL Mode2 non-HON upgrade (ATSU, MCDU)
Airbus A380 Standard (FANS-A+) Future Option(FANS-A+B)
N/A
Airbus A350 Standard (FANS-A+B) Standard Option(FANS-A+B)
N/A
BAe-146/RJ N/A N/A CMU Solution4 Federated Solution - CMU MKII to MKII+ Upgrade, VDL Mode2upgrade of VHF Mode 0/A and MCDU or MIDU upgrade
EMB-170/190 N/A Future Option(with NGFMS)4
EPIC CMF Either NG FMS with EPIC CMF upgrade or stand alone EPIC CMF/ATS upgrade (Requires Pentium M Configuration) - VDL Mode2upgrade of VHF Mode 0/A
Honeywell Solutions
Note : N/A = Not Applicable or Not Available (the OEM did NOT provide such a function for the aircraft). Standard means the a/c as delivered from the OEMwould have that capability, OPTION is that function is a current (or soon to be available OPTION), and Future Option means exactly that (a PLANNED futureoption from the OEM, but not under any current development and therefore there is some risk in that it will change or not ultimately be cer tified and offered).
5/28/2018 Cpdlc Data Link
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965-0758-006 supports ARINC 758
wiring (Retrofit and Forward-Fit)
PowerPC (MPC 8270) Processor BasedSystem, >750MIPS
32MB SDRAM, 64MB Flash
1MBit Non-Volatile Backup (24 Hours)
1GB (SD Card)
Increased AOC Capabilities (Logic Units)
and Programmability via ART (ACARS
Reconfiguration Tool)
Honeywells solution for VDRUpgrade to provide VDL M2
capability
With the implementation of the
EUROCONTROL mandate, any airline
operators flying within European Airspace
need to have VDL Mode 2 Data Link capability
installed on VHF #3. Mix-ability between
VDL Mode 0 and VDL Mode 2 units will vary
depending upon aircraft platform and OEM.
Honeywells VHF Data Radio (VDR) Model
RTA 44D and Integrated Primus EPIC Radios
are upgradable to provide VDL M2 capability
for all kinds of platforms supporting multi-
frequency capabilities as per the European
mandate A631-5/6 standards.
This conversion includes hardware and
software modification that vary according to
the serial number of the VHF. Honeywells plan
is for two service shops to perform the relevant
service bulletins (Seattle Area Service Center
(SASC) and Toulouse Service Centers (FSC)).
MKII CMU (965-0758-001 or -002) Upgrade Paths
Leading the
way in ATMtechnologies.
6
The available upgrade of current MKII CMUs
(-001 or -002) to the ARINC 758 Mk II+ (965-
0758-006) or the MKII CMU (-001) to ARINC
724B MKII+ (965-0758-005) with PM-CPDLC
Application Software provides the following:
DLS IR Compliant PM-CPDLC (VDL
Mode 2) Functionality
Data link Recording Capability (High-
Speed ARINC 429 Interface to CVR)
Provides the router services for the FMS
hosted FANS 1 and 2 applications
HF, VHF (VDL Mode 0/A and Mode 2),
and SATCOM support
965-0758-005 supports ARINC 724B
wiring (Retrofit ONLY)
Part No.Product
Reconfigurable Partitioned SW 622/623 ATC
Messages (PDC,OCX, ATIS etc)
Uses MCDU FANS Special RoutingSupport
SATCOM and HFDL ARINC 716 (Mode 0
or Mode A) Supports 724B
and 758 wiring
VDL Mode 2 AOA ARINC 758 and
724B wiringsupported
ATN and VDLMode 2
ATC communicationvia CPDLC(Link 2000+Message Set)
Level C Protected Mode
CPDLC AOC enhancements
Future Enhancements: Gatelink Secure ACARS Recording
InitialCMU MKII
VDLMode 2CMU
Link 2000+Pioneer PhaseATN CompliantCMU
Link 2000+ATN CompliantCMU MKII +
MKII+Communications
Manag
ementUnit
1996
2000
/1
2006
Current
ARINC 724B ARINC 758 FANS 1/A+5 SES-DLSLink 2000
5Support FANS as a router with special FANS routing logic and Data Link recording.Not SupportedSupported
965-0758-001
965-0758-002965-0758-005
965-0758-006
Honeywell continues to lead the way in
ATM technologies, developing MKII+ CMUs
for future compliance with the anticipated
changes to data link requirements including
data link encryption. The hardware of part
numbers 965-0758-005 (ARINC 724B version)
and 965-0758-006 (ARINC 758 version)
is designed to support the future data link
requirements with only software upgrades
necessary to achieve future functionality as
per the table to the left. These technology
roadmaps include three important upgrades
linked to the PM CPDLC software:
The AOC function has been enhanced to
supply greater customisation capabilities.
The ACARS Reconfiguration Tool (ART)
has been improved so that multiple
elements of the AOC database (e.g.
parameters, screens, downlinks) may be
viewed and edited simultaneously.
The Airsim tool has been upgraded to
enable the simulation of the CPDLC
function.
MKII+ Communications Management Unit
Increased Functionality
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Technical White Paper CPDLC Data Link
CMC
ACMS
ATC
AOC
ACARS
CMU - A623
Router
FMS
Cockpit
Printer
Aural Alert
Visual Alert
AOC Datalink Movement Messages Weather Requests Delay/Diversion Reports Customised Reports
FMS Datalink Flight Plan Uplinks Wind Uplinks Performance Uplinks Position Reports
ACMS Datalink Engine Trend Reports Exceedance Reports FOQA Reports Customised Reports
CMC Datalink Real-time Faults
PilotInterface MCDUs
HFDL ANT
SATCOM
CVR
3rd VDR
Data Link Recording
Airline Data Lin k
PM-CPDLC/ATN
ANT
VDR
VDL-M2 ANT
The diagram above outlines Honeywells
comprehensive approach to delivering benefits
to airlines through the adoption of data link-
based upgrades. Honeywell has a multiple
tools suite that helps airlines to configure
their solutions to meet their operational,
maintenance, optimal flight planning and
administration functions. The architecture
provides a seamless interface to CMS, FMS,
ACMS and other LRUs to help transmit reliable
data in real-time for use in decision-makingmanaged through the CMU MKII+s seamless
power and interface capabilities with other
avionics systems in the aircraft.
ACMS/FDAMS - A/C Exceedance Reports
These are used to automatically inform ground
of abnormal conditions (engine or aircraft
performance outside acceptable thresholds),
for example, EGT over temperature, landing
gear dropped at excessive high speed, N1/
N2 over speed, oil temperature /oil pressure,
vibration and other potentially hazardous
conditions. Engine & aircraft performance
reports result in reduced maintenance and
warranty cost, and support various aircraft/engine analysis programmes (ADEPT, GEM,
and others)and offer the potential for full
automation of analysis.
CMC (Maintenance Computer) Reports
Used to automatically inform ground crew of
equipment failures. For example, on Airbus
aircraft, CMU can turn on and off CMC
reports to be sent to ground. This allows
data to be sent to maintenance in real-time,
and decreases the need for maintenance
visits to the aircraft. This system also deliversinformation more rapidly, which can reduce
delays.
FMS (Flight Management System)
This system allows for the update of wind data
to allow for adjustments in flight plans, as well
as enabling updates of flight plan changes and
down- linking of flight plan changes. And in
some aircraft, FANS Operation is also enabled
(Controller -Pilot Communication) - example
B747, 777, A340 etc. Not All FMCs, ACMS/
DMUs and CMCs support data link. FMS
support A702 AOC application. It may also
have FANS 1/A+ and FANS 2 and FANS B.In addition, airlines use this for any information
(paper) provided to the flight crew before flight,
reducing costs associated with personnel
bringing information to the aircraft. This is more
efficient compared to any information provided
to the flight crew via voice communications,
reduces delays (data can be sent in seconds)
and increases number of aircraft handled by
flight operations/ dispatch. Any information
usually manually written by flight crew for
provision to ground personnel transmitted
faster using this system, and it also removes
the need for manual data entry on the ground,
which in turn reduces the risk of mistakes due
to human error.
7
System Architecture to Address Compliance Using Honeywells CMU
Honeywells Data Link BasedACARS Comprehensive Solution
Data Link Messagesfrom Other LRU
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N61-1121-000-000
April 2012 2012 Honeywell International Inc.
Honeywell Aerospace1944 East Sky Harbor Circle
Phoenix, Arizona 85034
North America: +1 (800) 601 3099
Outside North America: +1 (602) 365 3099
www.honeywell.com
Find Out More
For general information on Honeywell data
link solutions with the MKII Communication
Management Unit, please contact your
Honeywell sales representative or call
+1 (800) 601 3099 or +1 602 365 3099.
For more technical information, please contact the appropriate Technical Sales Representatives:
Greg Francois, Air Transport Andy Hill, Air Transport
Honeywell Technical Sales Honeywell Technical Sales
Office: +1 (602) 436 3196 Office : +44 (0)1256 722 297
Mobile: +1 (425) 922 0708 Mobile : + 44 (0)7974 451 305
Email: [email protected] Email : [email protected]
Achieving Compliance
Adopting Honeywells data link solutions
ensures that your aircraft and fleet are
benefiting from the most up-to-date Honeywell
technology, delivering a superior user
experience and enhanced levels of safety,
efficiency and reliability, whilst maintaining
compliance with local and global mandates.
Furthermore, adopting this technology places
airline operators at the forefront of ATM
advances, ready to reap the benefits of a
modernised ATM environment.
Why Honeywell
Since the launch of FANS in 1990, Honeywell
has been committed to providing technical
tools to enable effortless migration by mapping
through upgrades, STC, TC and platform-
centric solutions for Boeing, Airbus and
Embraer platforms. Our performance-focused
approach meets mandates and ensures
seamless integration to existing HoneywellAvionics products.
For more than 100 years, Honeywell has been
a pioneer in aerospace innovation. Every day,
thousands of aircraft equipped with Honeywell
technology fly across our skies. In fact, our
products can be found on virtually every type
of commercial airliner, business and general
aviation jet, military aircraft and space vehicle
currently in operation. So, from takeoff tolanding, Honeywell helps make flying safer,
more reliable and more efficient, and it doesnt
stop there Honeywell technology is cost
effective too.
Abbreviations
ACMS Aircraft ConditionMonitoring System
ADL Airborne Data Loader
AIMS Airplane InformationManagement System
ANSP Air Navigation Service Provider
AOC Airline Operational Control/Communication
ART ACARS Reconfiguration Tool
ATC Air Traffic Control
ATN Aeronautical TelecommunicationNetwork
ATS Air Traffic Services
ATSU Air Traffic Services Unit
BITE Built In Test Equipment
CM Context Management
CMF CommunicationManagement Function
CMU CommunicationsManagement Unit
MFD Multi-Function Display
NGFMS Next Generation FlightManagement System
OMS Onboard Maintenance System
PDL Portable Data Loader
PM- Protected Mode ControllerCPDLC Pilot Data Link Communication
R/T Receiver/Transmitter
RIPS Recorder IndependentPower Supply
SESAR Single EuropeanSky ATM Research
SES-DLS Single EuropeanSky Data Link Services
SSCVR Solid State CockpitVoice Recorder
STC Supplemental Type Certificate
VDL VHF Data Link
VDL-M2 VHF Data Link Mode 2
VHF Very High Frequency
CPDLC Controller Pilot Data LinkCommunication
CVR Cockpit Voice Recorder
DCDU Data Link Communicationand Display Unit
DCMF Data CommunicationManagement Function
DLC Data Link Communications
DLS Data Link Services
DLS IR Data Link ServicesImplementing Rules
EASA European Aviation Safety Agency
ETA Expected Time of Arrival
FDAMS Flight Data Acquisition
and Management System
FANS Future Air Navigation System
FDCF Flight Deck CommunicationFunction
FMS Flight Management System
HFDL High Frequency Data Link
MCDU Multi-Function Control Display Unit
This document (and related information provided by Honeywell) expresses Honeywells current business views and opinions on certain current and anticipated rules and laws. It isintended as an informal guide only, designed to assist current and prospective Honeywell customers in their evaluation of whether our products and services can meet their businessneeds. This information should not be relied upon when making business decisions. None of the information contained in this document constitutes legal advice or legal opinion on how
any of the referenced rules or laws may apply to you or your organisation or to any other matters. We encourage you to seek your own legal counsel and conduct your own independentanalysis of the matters raised if you feel they are important to you or your business. Although we believe the factual information provided here to be accurate, it is disclosed (along withrelated information) without any representation or warranties of any kind (such as those relating to accuracy, currency, completeness or suitability to your business).