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21
Federal Aviation 0
Administration 0
Session 4
RNP – The Expectations?
Certification Issues
Federal Aviation 1
Administration 1
RNP Airworthiness &
Operational Implementation
in the U.S.
Federal Aviation
Administration
Presentation to:
EurocontrolWorkshop – “Implementing RNP”
Toulouse, France
Barry Miller
Aircraft Certification Lead for U.S. RNP Implementation
FAA Avionics Standards Branch, Aircraft Certification Service
(AIR-130)
October 5, 2005
Federal Aviation 2
Administration 2
RNP Airworthiness & Operational
Implementation Overview
RNP Strategy – A Change in Perspective
The “Three-Legged Stool”
RNP Operational Approval
Background: Aircraft Certification
The Role of Aircraft Certification
The Role of the Manufacturer
Federal Aviation 3
Administration 3
RNP Strategy – A New Perspective
• Tradition  Design Airspace Around the Aircraft
Example – Implementation of ILS Procedures
• New Paradigm 
Define the Airspace to Meet Operational Needs
Define the Operational Procedures Design Criteria to Meet
Airspace Definition  TERPS or PANS-OPS
Then, Define the Aircraft Requirements for Operations in the
Airspace
• The RNP Strategy  “A Three-Legged Stool”
Air Traffic Criteria
Operations Criteria  Including Procedure Design Criteria
Aircraft Qualification Criteria
Federal Aviation 4
Administration 4
The “Three-Legged Stool”
• Define the Air Traffic Criteria
 Define the Airspace
 Air Traffic Control Procedures
• Define the Operations Criteria
 Procedure Design Criteria
 Operational Performance Requirements
• Define the Aircraft Qualification Requirements
 Find Foundation in the Operational Criteria
 Embrace Existing RNP Airworthiness Approvals
 Define Operational Mitigations
Federal Aviation 5
Administration 5
RNP Operational Approval
• Define the Aircraft Performance Characteristics
 Applicability to Desired RNP Procedures
 Examples: RF Turn Capability, TOGA Performance
• Develop Pilot Operations & Training Requirements
 Aircraft System Operations Related to the RNP Procedures
 Example: GNSS Required  A Starting Point
 Pilot Alerting & Operational Limitations for RNP Procedures
New Pilot Procedures to Accommodate FTE Monitoring
Go-Around Capability Exists & Does Not Exceed Containment
• Ensure Support for Database Integrity
 Use of Approved Database Suppliers  Letter of Acceptance (LOA)
 Operator-Defined Database Configuration Control
 Applicability of Operational Database Checks – Simulator & Aircraft
Federal Aviation 6
Administration 6
Background: Aircraft Certification
• Airworthiness Key  Intended Function
14 CFR 25.1301 & 25.1309  Intended Function
• Absent RNP Standards 
Document Aircraft Capability & Performance
The Aircraft Flight Manual (AFM)
Does Not Constitute Operational Approval
RNP Airworthiness Approvals for Many Aircraft
Boeing, Embraer, Gulfstream ~ Airbus
Federal Aviation 7
Administration 7
Role of FAA Aircraft Certification
• Support the Operations Approval
 Define Aircraft Performance Characteristics
Alerting – Display Scaling – TOGA – Inertial Performance
Approve Data Suppliers  FAA AC 20-153  LOA
• Support New Aircraft & Certification Projects (TC/STC)
Future: Draft FAA Advisory Circular 90-RNP SAAAR
Approval for Required Navigation Performance (RNP) Procedures with
Special Aircraft & Aircrew Authorization Required (SAAAR)
Expect Manufacturer to Use Specific, Defined Criteria
Federal Aviation 8
Administration 8
Role of Aircraft OEMs
• Document Aircraft Performance
Examples: Altimetry System, Flight Technical Error (FTE)…
• Assist Aircraft Customers Achieve Ops Approval
• Provide Aircraft Qualification & Operations Guidance
 Tailored to the Specific RNP Operation
 Minimum Equipment List for the RNP Operations
　
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