# Presentation: 843685

## AIRCRAFT ENGINEERING/DATA PACKAGE

- Bill Schinstock
- Wichita Aircraft Certification Office

- Presentation 8

## Part 91 Appendix GOperations in RVSM Airspace

- Section 1	Definitions
- RVSM Group Aircraft
- RVSM Non-group aircraft
- RVSM Full and Basic Flight Envelopes
- Section 2	Aircraft Approval
- (b)   Aircraft Engineering Data Package Content
- (c)	  Required Aircraft Altitude-keeping Equipment
- (d)   Altimetry System Error (ASE) Containment for pre-April 9, 1997 aircraft

## Appendix G Content 

- (e)   ASE Containment for post-April 9, 1997 aircraft
- (f)    ASE Containment for Non-group aircraft
- (g)   TCAS II Compatibility with RVSM Operations
- (h)   Administrator finding  of compliance

## Interim Guidance 91-RVSM

- 91-RVSM Reference Paragraphs
- Appendix 7:	Table of Contents
- Paragraph 6:	Approval Process
- Paragraph 7:	RVSM Performance Requirements
- Paragraph 8:	Aircraft Systems
- Paragraph 9:	Airworthiness Approval
- Appendix 1:	Explanation of W/
- Appendix 2:	Altimetry System Error Components
- Appendix 3:	Establishing and Monitoring Static 	Source Errors

## Interim Guidance 91-RVSM (cont.)

- Manufacturers and Approved Design Organizations use these sections of Appendix G and 91-RVSM to:
- Gain Aircraft Certification Office approval of data package processes and data showing compliance with RVSM standards
- Gain ACO approval of documents for operator application to aircraft groups and individual airframes (e.g., Service Bulletin, STC)

## Aircraft Approval Requirements

- Aircraft may be approved to RVSM requirements as:
- Group aircraft or Non-group aircraft
- Must meet minimum aircraft equipage requirements
- Required aircraft systems must meet Appendix G  Tolerances

## Aircraft Approved for World-wide Operations

- RVSM compliant aircraft are eligible for RVSM operations world-wide
- FAA and JAA aircraft approval criteria established for world-wide approvals
- Assumptions such as high density traffic used in criteria development

## Approval Objective

- 	The objective of airworthiness approval for  RVSM operations is to demonstrate that the design and manufacture of the aircraft, its systems, and their installation can meet the performance criteria necessary for RVSM operation, as defined in Part 91 Appendix G.

## Basis of RVSM Airworthiness Approval

- The altimetry system performance for any aircraft is governed by the appropriate certification requirements
- i.e., FAR/JAR 25.1325, "Static Pressure Systems.”
- RVSM airworthiness approval is in addition to the requirements defined by the aircraft's certification basis.

## Airworthiness Approval

- Airworthiness authorities (e.g.,  ACO’s) have approved data packages for most aircraft types.
- The data packages:
- Identify the approved aircraft type or group
- Detail how the manufacturer has verified the altimetry system performance

## Minimum Equipment for RVSM Operations

- Two independent altitude measurement systems
- Each system should be composed of the following elements:
- Cross-coupled static source system
- Static source error correction (SSEC), if needed to meet the ASE requirements
- Exploring single system for turbo-prop aircraft
- An altitude alert system
- An automatic altitude control system
- Note:   Altitude reporting transponder equipage required by other regulations.

## Equipment Tolerances(Reference Appendix G)

- _ASE Requirements__	__	__Basic Envelope__	__	__	_        _Full Envelope_
- Group Aircraft	[Mean ASE of the group] _<_80 ft (25m)	        _<_120 ft (37m)
- 	(pre April 1997) 	[Mean ASE + 3SD] _<_200 ft (60m)		        _<_245 ft (75m)
- Group Aircraft		        N/A         _	__	_        [Mean ASE]  _<_80 ft (25m)
-     (post April 1997) 		        N/A  _	__	_       [Mean ASE + 3SD] _<_200 ft (60m)
- Non-group Aircraft	[Residual static source error + 		        _<_200 ft (60m)
- 					worst case avionics] 	_<_160 ft (50m)
- ALTITUDE ALERT LIMIT:  _+_300 ft Altitude Deviations
- 	Aircraft applying for type certification after April 1997: ±200 ft
- AUTOMATIC ALTITUDE CONTROL SYSTEM:  _+_65 ft (20m) about acquired altitude		Note:  For aircraft type certified prior to April 1997, FMS/PMS system with _+_ 130 ft 		variations allowed

## Definition of Flight Envelopes

- JAA/FAA documents evaluate ASE requirements against
-  the basic flight envelope and the full envelope

- Full RVSM Envelope

## Definition of Flight Envelopes

- Basic RVSM Envelope
- Same as full envelope except upper Mach boundary
- Upper Mach boundary not less than long range cruise plus 0.04 Mach
- Note: Basic envelope is not applicable to post April 1997   	  group aircraft

## TCAS II, Version 7.0

- Appendix G amended in December 2001:
- 	"After March 31, 2002, _unless otherwise authorized by the Administrator_, _**if you operate an aircraft that is equipped with TCAS II in RVSM airspace,**_ it must be a TCAS II that meets TSO C-119b (Version 7.0), or a later version.”
- Applicable to US-registered aircraft, _not_ FAA controlled oceanic airspace

## Operator Documents

- For operator action, aircraft  RVSM compliance documents have taken the form of:
- For In-service Aircraft
- Manufacturers’ Service Bulletin
- Supplemental Type Certificates
- Aircraft Service Change for Gulfstream aircraft
- For New-production aircraft manufactured in compliance with Appendix G
- Statement of Compliance in AFM
- All documents approved by Aircraft Certification Offices

## Aircraft Engineering Package Availability

- See FAA RVSM Website, RVSM Documentation page, Documents Applicable to All Approvals
- Aircraft Engineering Packages for air carriers and GA operators
- Manufacturer points of contact
- 			_http://www.faa.gov/ats/ato/rvsm1.htm_
- 			 RVSM Documentation
- 			 Aircraft Engineering Packages
- 			 Points of Contact