GBAS Approval Process - PANSA
Transcript of GBAS Approval Process - PANSA
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GBAS Approval Process
Honeywell, Precision Landing Systems
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Agenda
• FAA System Design Approval – Integrity Panel
• Ionosphere Mitigation • GBAS Approval by Country • GAST-D (CAT II/III)
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GBAS Certification Phases • System Design Approval (SDA) – Manufacturer
– Ground station system design meets requirements – Developed to appropriate design assurance levels – Accuracy, integrity, availability requirements satisfied
• Facility Approval – Owner/ANSP/Airport – Ground station installed properly, safely – Approach plates/procedures developed – Signal-in-space, coverage volume verified, approaches verified – Maintenance technicians trained, certified
• Service Approval – Operator/Airline – Aircraft equipped – Pilot crews trained – Control tower personnel trained
FAA approved 2009 BAF approved 2011
Bremen, Germany Newark, New Jersey Houston, Texas Malaga, Spain Sydney, Australia Frankfurt, Germany
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FAA System Design Approval
Honeywell, Precision Landing Systems
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SYSTEM DESIGN APPROVAL •System Safety •System Engineering •Software Design Assurance •Hardware Design Assurance •System Verification •Commercial Instruction Book •Training Material •System SRMD •Operational Evaluation
FACILITY APPROVAL •Operations •Maintenance •Installation •Flight Procedures •Flight Inspection •Spectrum Management •Training •Safety Management
SERVICE APPROVAL •Aircraft Approval •ATC Training •Pilot Training •Instrument Flight Criteria
GBAS CAT I Approval Steps
• To be approved the system must meet ICAO, FAA and/or other recognized standard
• The standard for SmartPath is the FAA LAAS Specification 3017 which also traces to the ICAO requirements
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Customer Requirements LGF/
Customer System Reqts
Arch
Code Test
Detailed Reqts Requirements
•ICAO SARPS •FAA Specification 3017
Secondary Requirements •DO-246C, GBAS Signal in Space •DO-245A, MASPS for GBAS •Mil-Std-461E, Electromagnetic Interference •Mil-Std-810F, Environmental Tests •FAA-G-2100G, Electronic Equipment •ED-114, MOPS for GBAS
Process Requirements •ARP-4754, Certification Considerations •ARP-4761, Safety Process •DO-278/DO-178, Software •DO-254, Hardware
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GBAS CAT I Approval Plan
• GBAS Approval Plan – Provides the FAA with Honeywell’s plan to achieve
design approval for the GBAS system – Approval basis includes
• Requirements • Compliance method • Data • Schedule • Responsibilities
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GBAS CAT I Approval Plan
Approval Plan
System Engineering Management Plan
• Configuration Management Plan (CMP)
• GBAS System Description Document
• Functional Hazard Assessment (FHA)
• Algorithm Description & Analysis Document
• GBAS System Requirements Specification (SRS)
• Interface Control Documents• Preliminary System Safety
Assessment (PSSA)• GBAS System Verification Plan• GBAS System Verification • GBAS System Safety Assessment
DCP PSAA/SAS(Honeywell)
Deos PSAC/SAS(Honeywell)
GPS Receiver PSAC/SAS(CMC Electronics)
VDB TX/RX PSAC/SAS(Telrad)
Remote Power Distribution Panel PSAA/SAS
(Honeywell)
DCP PHAC/HAS(Honeywell)
GPS Receiver PHAC/HAS
(CMC Electronics)
GBAS Approval Summary
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FAA Approval Process
• System Design Approval Plan CAT I Local Area Augmentation System (LAAS) – Provides top-level SDA plans and activities for use by FAA
personnel
• System Design Approval Process And Procedures for The CAT I Local Area Augmentation System – Defines the evaluation criteria for all reviews necessary to
accomplish System Design Approval
• These documents describe the objectives, activities and documentation to: – Verify compliance to the requirements – Define design data that substantiates compliance – Document accepted configuration
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System Design Approval
System Safety Assessment
Functional Hazard Assessment
Preliminary System Safety Assessment
Algorithm Description Document
HMI Analysis/Report
Complex HW Design Assurance Reviews
SW Design Assurance Reviews
Commercial Instruction Book
Review
Training Material Review
Systems Engineering Review
System Level Verification
FMEA/FMES
SRMD(System Design
Aspects)
FAA System Design Approval
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Safety Definitions
• Integrity – The probability of transmitting out-of-tolerance navigation data for 3-seconds or longer in any 150-second interval
• Continuity – The probability of an unscheduled interruption of the VHF transmission for 3-seconds or longer in any 15 second interval
• Availability – The proportion of time during which service is provided, computed over a long period (typically a year)
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Safety Requirements
• Severe-Major Hazard Classification – Approach Integrity due to LGF failure, anomalous
environmental or atmospheric effects – 1.5 x 10-7 in 150-seconds
– Approach Integrity under fault free or no more than Reference Receiver fault – 5 x 10-8 in 150-seconds
• Minor Hazard Classification – Unscheduled interruption of VDB transmission (Loss of
Continuity) – 1.0 x 10-6 in 15-seconds – Unscheduled loss of sufficient Reference Receivers or
Ranging Sources (Loss of Continuity) – 2.3 x 10-6 in 15-seconds
• Availability – 0.99 (goal)
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LAAS Integrity Panel
• Purpose – Ensure GBAS integrity monitors address defined GPS threats
• Team – Honeywell, FAA (10), Subject Matter Experts (11 Key Technical
Advisors)
• Process – 10 years development – 20 Technical Interchange Meetings – Review development of integrity monitors – Approve integrity monitors
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Integrity Algorithms SCAT I GAST-C
SCAT I Operations (1998) CAT I Operations CAT I Operations CAT II/III OperationsBroadcast Msg Type 1, 2 & 4 Broadcast Msg Type 1, 2 & 4 Broadcast Msg Type 1, 2 & 4 Broadcast Message Type 11
Sigma PR Ground Sigma PR GroundPhase Center Non-Zero Mean Phase Center Non-Zero MeanGround System Sigma Monitor Ground System Sigma MonitorIonosphere Anomaly Monitor Ionosphere Anomaly MonitorTroposphere Anomaly Monitor Troposphere Anomaly MonitorEphemeris Monitor Ephemeris MonitorSignal Deformation Monitor Signal Deformation MonitorLow Satellite Signal Power Monitor Low Satellite Signal Power MonitorCode Carrier Divergence Monitor Code Carrier Divergence MonitorExcessive Acceleration Monitor Excessive Acceleration Monitor Excessive Acceleration MonitorExecutive Monitor Executive Monitor Executive MonitorRFI Above the Mask RFI Above the MaskIono Screening Real Time Inflation Iono Screening Real Time InflationConstellation Alerts Constellation AlertsBroadband RFI Monitor Broadband RFI Monitor
Cross Correlation MonitorIono Gradient Monitor
GAST-D
CAT III monitors developed GAST-C provides foundation for GAST-D
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System Design Approval
System Safety Assessment
Functional Hazard Assessment
Preliminary System Safety Assessment
Algorithm Description Document
HMI Analysis/Report
Complex HW Design Assurance Reviews
SW Design Assurance Reviews
Commercial Instruction Book
Review
Training Material Review
Systems Engineering Review
System Level Verification
FMEA/FMES
SRMD(System Design
Aspects)
FAA System Design Approval
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Ionosphere Mitigation
Honeywell, Precision Landing Systems
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Ionosphere Threat Model • Independent ionosphere analysis performed by
following countries – United States – Germany – Spain – Australia – Switzerland – Brazil
• Approved Honeywell GBAS addresses mid-latitude iono • Honeywell is developing an update to address low-latitude
iono
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Rare Anomalous Iono
Max Iono delay
D = w g
Front Speed (v)
Nominal IonoWidth (w)
Iono Front
Slope (g)
Max Iono delay
D = w g
Front Speed (v)
Nominal IonoWidth (w)
Iono Front
Slope (g)
•Gradient = Slope (g)
Results in integrity/position error
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Iono Error at Decision Height
200 ft DH
< 6 km
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Iono Scintillation
Impacts availability of GBAS
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Equatorial Scintillation
• Amplitude and phase of GPS signals change rapidly
• Degradation of measurements – Enhanced error
• Loss-of-lock of satellite signals – Degradation of geometry, less accuracy,
availability issue • Occurs local sunset to local midnight
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GBAS Approval by Country
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Germany
• Country requirements for type certification • Top level requirements: ICAO • Honeywell responsible to obtain type certification with BAF
Bremen Frankfurt
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Germany - Requirements • NfL II-51/08, Notification concerning the requirements
for type-certification of GBAS ground facilities as aeronautical radionavigation stations – System safety and security
• ICAO Annex 10, Volume 1 • ARP4761, Safety Assessment Process
– Software requirements • Developed according to EUROCAE ED-109
– Technical functional requirements • ICAO Annex 10, Volume 1 • Tests per EUROCAE ED-114 • Ground and Flight inspections per ICAO Doc 8071 chapter 4 • All weather operations, NfL I-1/99 • Remote monitoring
– Environmental requirements • ED-114 • NfL I-328/01, Guidelines Concerning Obstacle Clearance for Instrument Runways
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Germany - Requirements • NfL II-51/08, Notification concerning the requirements
for type-certification of GBAS ground facilities as aeronautical radionavigation stations – Facility Documentation
• Installation manual • Technical system description • Operators manual • Maintenance manual
– Legal telecommunication requirements • Declaration of conformity to radio equipment and telecommunications standards
– Applicable to Cat I operations – Independent audit of Honeywell’s FAA SDA data package
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Spain
• Top level requirements: FAA specification • Aena prepared approval package for certification authority
Malaga
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Australia • Top level requirements: FAA specification • Airservices Australia prepared approval package for certification
authority • Certification authority CASA participated in FAA audits
Sydney
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Switzerland • Switzerland approval agency stated that they don’t approve NAVAIDS. It
is the responsibility of the ANSP to purchase an approved system. • Switzerland approval agency is interested to see safety case for how the
new NAVAID is integrated into the airport’s operation • Honeywell provided a documentation package that defines the
SmartPath system Zurich
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Brazil • Top level requirements: ICAO • Approval agency ICEA is working with
the FAA on approval of the Honeywell SmartPath for low-latitude – ICEA participates in FAA audit meetings
• ICEA needs to address iono threat model for Brazil – Independent iono analysis – Honeywell iono analysis
• Honeywell will submit design approval documents to ICEA
Rio de Janeiro
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India
• Top level requirements: ICAO • Honeywell will submit approval documents to Airports Authority of
India and approval agency DGCA Chennai
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GAST-D (CAT II/III)
Honeywell, Precision Landing Systems
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GAST-D (CAT II/III)
• Honeywell has initiated an FAA approval plan for a GAST-D system • Core architecture unchanged from GAST-C SLS-4000 system • Two new monitors for GAST-D • Requirements prototyped and validated by the FAA