FAA Form 1320-15 (4-82) Supersedes WA Form 1320-2
U.S. Department of Transportation Federal Aviation Administration
Advisory Circular Subject:
NOISE STANDARDS: AIRCRAFT TYPE AND
AIRWORTHINESS CERTIFICATION Date: 7/15/03 Initiated by: AEE-100 AC No: 36-4C Change:
1. PURPOSE.
a. Contents: This advisory circular (AC) contains information concerning the aircraft noise certification requirements of part 36 of the United States Code of Federal Regulations (CFR) Title 14. The document includes general information, references and definitions related to part 36, followed by regulatory language of all sections of part 36 Subparts and Technical Appendices. Explanations of regulatory language, FAA policies for implementation of the regulatory language and other guidance information are provided for each section, as appropriate. Four appendices are also attached and referenced within the body of the AC. These include the ICAO Environmental Technical Manual as identified below, a description of FAA procedures for auditing an applicant’s data adjustment and analysis methods, a methodology for adjusting data for the effects of ambient noise, and information on equivalent procedures and demonstrating “no acoustical change” for propeller-driven small airplanes and commuter category airplanes. The regulation that this AC references to is part 36, as amended through August 7, 2002 (Amendment 36-24).
b. Scope: This AC provides information for interested parties (such as regulatory authorities, aircraft manufacturers, acoustic consultants, airline and airport operators and others) on compliance with the part 36 noise certification regulations, including FAA policies and interpretations of regulatory language and other technical guidance applicable to noise certification processes for airplane and rotorcraft classes of aircraft. It is applicable for noise certification of normal, utility, acrobatic, commuter and transport category airplanes and normal and transport category rotorcraft as defined in part 21.
This AC does not change regulatory requirements and does not authorize changes in, or deviations from, regulatory requirements. This document contains some mandatory language, where it is appropriate, as well as language that is permissive and advisory in nature. Mandatory language (e.g. the term “must”) is used in the AC for “Explanations of regulatory language”. Mandatory language is also used for certain “Supplementary Information” and “ Procedures” to reflect FAA policies regarding compliance with the intent of regulatory language.
Permissive language (e.g. the term “should”) is used in this AC, to identify conditions and/or methods and procedures that may be acceptable to the FAA for purposes of aircraft noise certification based upon experience to date, but where an applicant is not constrained from considering or validating and proposing alternatives for compliance with part 36.
The FAA Office of Environment and Energy (AEE) (located in Washington DC) has approved a substantial number of equivalent procedures proposed by applicants. Many of these equivalent procedures are referred to in this document because, through their extensive usage by applicants, they have become acceptable practices for aircraft noise certification applications. Appendix 1 of this document is Steering Group Approved Revision 7 (SGAR7) of the “Environmental Technical Manual On The Use Of Procedures in The Noise Certification Of Aircraft” developed by the ICAO Committee on Aviation Environmental Protection (CAEP). This AC references specific Technical Manual equivalent procedures that may be considered acceptable by FAA for aircraft noise certification applications. The acceptability of an equivalent procedure for an aircraft noise certification application is subject to FAA review and approval on a project by project basis.
c. Document Format: This AC contains a section-by-section review of part 36 as shown in Figure 1:
FIGURE 1: Document Format
d. Exclusions: The following topics are not addressed in this AC:
(1) This document does not review the noise certification requirements for supersonic transport category airplanes. Part 36, Subpart D and other related sections of part 36, address supersonic airplane noise certification requirements only for the Concorde airplane and there currently are no identified procedures for future supersonic planes. An applicant must contact the FAA Office of Environment and Energy for assistance and future plans associated with the noise certification of supersonic transport category airplanes.
Paragraph Number: new easy to reference number for each section of 14 CFR part 36 that is addressed
1. Citation Number: Regulatory section of 14 CFR part 36 that is being addressed
Supplemental information (included only if necessary).
2. 286. Section B36.7(b)(6).
The weight of the airplane at the brake release must be the maximum takeoff weight at which the noise certification is requested….
a. Explanation
This section specifies criteria for defining a reference maximum takeoff weight of an airplane.
b. Supplemental Information
(1) Part 36 section 36.1581 Requirements: An airplane reference maximum takeoff weight for noise certification which is less than the maximum weight established under applicable airworthiness requirements must be furnished as operating limitations in the limitations section of the airplane flight manual.
c. Procedures:
(1) Applicant’s Responsibility: An applicant must define and obtain FAA approval of an airplane maximum takeoff weight to calculate reference EPNL values.
Actual regulatory text (italicized, bold and indented) reproduced for better readability
Brief “Plain English” explanation of regulatory text (appears only if text is not self explanatory)
Additional procedurerelated information (included only if necessary).
(2) This document does not review part 36 Appendix F, “Flyover Noise Requirements for Propeller-Driven Small Airplane and Propeller-Driven, Commuter Category Airplane Certification Tests Prior to December 22, 1988.” Appendix F has been superseded by Appendix G.
(3) This document does not review the aircraft operational limitations that may be imposed on certificated civil aircraft operating within the United States of America, such as is identified in part 91. An applicant or operator may review the current operational limitations that are found in the Operating Noise Limits of part 91, Subpart I, section 91.801.
e. 14 CFR part 36 History: The table below summarizes the date of adoption of part 36 and all amendments that followed.
Amendment #, Effective Date Title Subject 00-0, 12/01/69 Adoption of part 36 Adds new part 36 to the FAR and makes procedural changes to part 21.
36-1, 12/01/69 Approach Noise Test Conditions Changes the type certification approach noise test conditions for subsonic transport category airplanes and for subsonic turbojet airplanes regardless of category; to ensure that the test is conducted with the same configuration as that used during the airworthiness type certification, and does not result in noise levels less than those that will be generated in normal operation.
36-2, 12/01/73 Noise Standards for Newly Produced Airplanes of Older Type Designs Requires certain new production turbojet and transport category airplanes to comply with part 36, regardless of type certification date as a condition for issuance of certain standard airworthiness certificates.
36-3, 01/20/75 Acoustical Change Approvals Tightens the conditions under which an applicant must show that issuance of type certificate changes will not increase take-off and sideline noise levels.
36-4, 02/07/75 Noise Standards for Propeller Driven Small Airplanes Prescribes noise standards for normal, utility, acrobatic, transport, and restricted category type certificates for propeller driven small airplanes; issuance of standard airworthiness certificates and restricted category airworthiness certificates for newly produced propeller driven small airplanes of older type designs; prohibits acoustical changes in the type designs that increase noise levels beyond specified limits.
36-5, 09/20/76 Noise Type Certification and Acoustical Change Approvals Changes the procedures for measuring and evaluating the noise of subsonic transport category airplanes and turbojet engine powered airplanes; governs new type certificates and acoustical change approvals for which application, is made after September 17, 1971.
36-6, 01/24/77 Noise Regulations for Propeller Driven Small Airplanes Submitted to the FAA by the EPA;
and Notice of Decision Changes procedures to increase the numbers of test flights, modify performance correction formula, and revise noise test engine power; decision not to make other certain EPA recommended amendments.
36-7, 10/01/77 Noise Level Limits and Acoustical Change Provides for three stages of aircraft noise levels with specified limits, with definitions of classification of airplanes under each stage; applications after November 5, 1975 to be Stage 3;
Amendment #, Effective Date Title Subject Requirements for Subsonic Transport Category Large Airplanes and for Subsonic Turbojet Powered Airplanes prescribes acoustical change requirements for airplanes in each stage.
36-8, 04/03/78 Noise Limits and Acoustical Change Requirements for Subsonic Transport Category Large Airplanes and Turbojet Powered Airplanes Amends noise limits for new airplane designs; limits noise levels of certain older airplane types if designs are changed; amends noise measuring points and noise test conditions; this amendment complements 36-7 and includes minor modifications to the Stage 3 noise limits, and also brings part 36 into greater conformity with ICAO standard.
36-9, 04/03/78 Aircraft Noise Measurement and Evaluation Specification Updates and clarifies the procedures and standards for conducting certain aircraft noise certification tests, based on developments in the state of the art and on aircraft noise test experience; achieves substantial conformity with modifications to ICAO Annex 16.
36-10, 07/31/78 Civil Supersonic Airplanes Noise and Sonic Boom Requirements Prescribes final rules for SSTs except Concordes with flight time before January 1, 1980; prohibits issuance of standard airworthiness certificates to Concordes that do not have flight time before January 1, 1980 and that do not comply with part 36; also amends part 21 and part 91 concerning operations of subject airplanes; FAA goal to not certificate or permit to operate any future design SST that does not meet standards then applicable to subsonic airplanes.
36-8, 09/28/78
CORRECTION (Title): Correction to Minimum Thrust Cutback Altitudes Prescribes the minimum altitude at which thrust may be reduced during take-off noise tests for certain airplanes powered by turbojet engines with high bypass ratios, which were previously certificated under the stage 2 limits; affects approvals for voluntary changes in type design which might increase the noise levels and is necessary to avoid an unintended effect of Amendment 36-8.
36-9, 01/15/79
CORRECTION (Title): PNLT Corrections Formula for Ambient Atmosphere Conditions Affecting the Sideline Flight Path Executes FAA's intended statement of the rule and prescribes an appropriate correction to the measured noise data when atmospheric conditions do not conform to the prescribed standard reference conditions.
36-11, 11/10/80 Operating Limitations and Related Requirements for Certain Propeller Driven Small Airplanes Provides for certain exclusions from the rule; applies to operation of newly produced airplanes (without flight time before January 1, 1980), and acoustically changed airplanes (without flight time in the changed design before January 1, 1980), that have not been shown to comply with part 36 noise levels; requires that an operating limitation be appropriately provided to the pilot.
Amendment #, Effective Date Title Subject Designed for Agricultural Aircraft Operations or Fire Fighting Purposes 36-12, 08/01/81 Noise Levels for Turbojet Engine Powered Airplanes and for Large Propeller Driven Airplanes:
Recommended Regulations Submitted to the FAA by the EPA Adds provision for FAA approval or equivalent procedures; clarifies and simplifies rule language to better explain which noise level requirements apply and which “tradeoff” provisions are available to applicants for approval of modifications to certain, already certificated aircraft type designs; FAA decisions not to prescribe other EPA recommended amendments.
36-13, 02/17/87 Airworthiness Standards and Operating Rules:
Commuter Category Airplanes Amends parts 21, 23, 36, 91, and 135 concerning an additional category of propeller driven, multi engine airplane designated as Commuter Category.
36-14, 2/05/88 Noise Standards for Helicopters in the Normal, Transport and Restricted Categories Adds noise certification Standards applicable to helicopters; applies to civil helicopters in the normal, transport and restricted categories and provides noise level limits and test procedures for the issuance of original and amended type certificates; prohibits changes in type design of helicopters that may increase noise levels beyond certain limits; does not limit further manufacture of existing helicopter types; provides commonality with ICAO Annex 16.
36-15, 05/06/88 Standards Governing the Noise Certification of Aircraft Revises certain provisions of the regulations to make them more understandable and easier to use; simplifies noise certification test and record keeping requirements.
36-16, 12/22/88 Noise Certification Standards for Propeller Driven Small Airplanes Revises noise certification standard by substituting the use of actual take-off tests for the level flyover tests; revises the noise level limit numbers to approximate the sound levels measured in accordance with Appendix F of part 36; exempts both antique airplanes and airplanes modified by the addition of floats and skis from the acoustical change measurement and documentation requirements of part 21.
36-17, 08/14/89 Noise Standards;
Limits on the Growth of Noise from Certain Airplanes and Airplane Types Requires that aircraft certificated within certain stages remain within those stages; applies to large transport category aircraft and to turbojet powered aircraft regardless of category and prohibits modification of individual airplanes and whole airplane types which result in increased noise beyond the limits of an airplane's certificated stage; does not restrict changes that result in decreased noise but does prohibit any remodification of an airplane which would return it to its original noise level.
36-18, 08/18/90 Revision of General Operating and Flight Rules Reorganizes and realigns the rules to make them more understandable and easier to use; provides more flexibility for certain operations.
36-19, 12/31/92 Primary Category Establishes a new primary category of aircraft and new simplified procedures for type, production, and airworthiness certification, and
Amendment #, Effective Date Title Subject associated maintenance procedures; maximum certificated weight of no more than 2,700 pounds, a maximum seating capacity of four, and unpressurized cabins.
36-20, 09/11/92 Alternative Noise Certification for Primary, Normal, Transport and Restricted Category Helicopters not Exceeding 6,000 Pounds Maximum Take-off Weight Adds Appendix J to part 36 providing for an alternative noise certification procedure; new appendix is an optional alternative to the existing helicopter noise requirements and is not an additional regulatory requirement; applicants may demonstrate compliance with either Appendix H or the less costly, but more stringent Appendix J.
36-21, 12/29/95 Authority Citation Revises part 36 authority citation.
36-22, 12/13/99 Noise Certification Standards for Propeller-Driven Small Airplanes Harmonizes the U.S. noise certification regulations and the European Joint Aviation Requirements (JAR) for propeller-driven small airplanes. The international standards and practices, as issued under International Civil Aviation Organization (ICAO) Annex 16, Volume 1, and its associated Technical Manual are the harmonization basis.
36-23, 3/1/2002 Removal of Expired Special Federal Aviation Regulations Removes Special Federal Aviation Regulation (SFAR) Number 41 editorial note from part 36.
36-24, 8/7/2002 Noise Certification Standards for Subsonic Jet Airplanes and Subsonic Transport Category Large Airplanes Harmonizes the U.S. noise certification regulations and the European Joint Aviation Requirements (JAR) for subsonic jet airplanes and subsonic transport category large airplanes. The international standards and practices, as issued under International Civil Aviation Organization (ICAO) Annex 16, Volume 1 (Chapter
3), Amendment 7, and its associated Technical Manual are the harmonization basis.
2. CANCELLATION.
Advisory Circular 36-4B, Noise Certification Handbook, dated March 23, 1988, is canceled.
3. REFERENCES.
The following references identify FAA Orders, Advisory Circulars, and Reports that provide direction and/or guidance on acceptable processes and procedures for aircraft noise certification. References to current ICAO and JAA noise standards are also listed. As these documents are referenced in this AC, information is also provided as to the extent that their provisions apply to a given type of aircraft noise certification process.
Applicants are encouraged to contact FAA AEE to determine if more recent editions are available and applicable to noise certification actions that are being considered for FAA approval.
(1) FAA Order 1050.1D, Policies and Procedures For Considering Environmental Impacts, (Change 4, June 14, 1999), or current version
(2) Public Law 103-272, Codification of Certain U.S. Transportation Laws as Title 49, United States Code, Section 44715, July 5, 1994
(3) Part 36, Appendix G Handbook, FAA Report FAA-AEE-95, dated June 20, 1995
(4) Requirements for DGPS-Based TSPI Systems Used in Aircraft Noise Certification Tests, DTS-75- FA753-LR3, Letter Report, April 14, 1997
(5) Joint Aviation Requirements, JAR 36, Aircraft Noise, May 1997
(6) Advisory Circular (AC) 25-7A, Flight Test Guide, March 31, 1998, or current version
(7) FAA Order 8110.4B, Type Certification Process, April 24, 2000, or current version
(8) ICAO Committee on Aviation Environmental Protection (CAEP), Environmental Technical Manual on the Use of Procedures in the Noise Certification of Aircraft, Steering Group Approved Revision (SGAR) 7, September 2000 (included as Appendix 1 to this AC)
(9) FAA Order 8100.8A, Designee Management Handbook, January 30, 2001, or current version
(10) FAA Order 8110.37C, September 30, 1998. Designated Engineering Representatives (DER) Guidance Handbook, or current version
(11) International Civil Aviation Organization (ICAO), Environmental Protection, Annex 16, Volume 1, Aircraft Noise, Third Edition - 1993. (Amendment 7, Applicable March 21, 2002)
4. DEFINITIONS.
This section contains two categories of Definitions that are used within the regulatory language, policies or other guidance information of this Advisory Circular. The first category defines general terms or organizational designations that depict FAA and Applicant roles in the part 36 noise certification process. The second category defines specific aircraft types that must comply with part 36 regulations and other items related to those aircraft.
a. General Definitions:
(1) Administrator: The Federal Aviation Administrator or any person to whom he has delegated his authority in the matter concerned. (Ref: part 1)
(2) Aircraft Certification Office (ACO): The (FAA) office that administers the type certificate and production approval of products in the area where the manufacturer is located (Ref: FAA AC 21-6A, dated 7/1/82)
(3) Applicant: 14 CFR part 21.13, states: “Any interested person may apply for a type certificate”.
The person that applies to the FAA for an aircraft type certificate, whether a new (original), amended, supplemental or provisional type certificate, is identified as the “applicant” and is the entity that must comply with the procedural, certification and production requirements of 14 CFR part 21.
(4) Noise Certification Specialist (NCS): The Directorate (Transport, Small Airplane, or Helicopter) Noise Certification Specialist
(5) Person: An individual, firm, partnership, corporation, company, association, joint-stock association, or government entity. It includes a trustee, receiver, assignee, or similar representative of any of them. (Ref: part 1)
(6) Type Inspection Authorization (TIA): The TIA is the official FAA document that provides direction and communication between the local ACO engineering group and the FAA flight test crew. The TIA usually mandates the provisions of an applicant’s approved demonstration compliance plan and any additional restrictions, inspections, tests, limitations, procedures, etc., that are required by the ACO to be observed during the conduct of the flight or ground testing.
b. Definitions Related to Aircraft
(1) Acrobatic Category Airplane: The acrobatic category is limited to airplanes that have a seating configuration, excluding pilot seats, of nine or less, a maximum certificated take-off weight of 12,500 pounds or less, and intended for use without restrictions, other than those shown to be necessary as a result of required flight tests. Acrobatic category airplanes are required to show compliance with 14 CFR part 23.
(2) Aircraft: A device that is used or intended to be used for flight in the air. (Ref: part 1)
(3) Aircraft Engine: An engine that is used, or intended to be used, for propelling aircraft. It includes turbosuperchargers, appurtenances, and accessories necessary for its functioning, but does not include propellers. (Ref: part 1)
(4) Airplane: An engine-driven fixed-wing aircraft heavier than air that is supported in flight by the dynamic reaction of the air against its wings. (Ref: part 1)
(5) Airport: An area of land or water that is used or intended to be used for the landing and take-off of aircraft, and includes its buildings and facilities, if any. (Ref: part 1)
(6) Civil Aircraft: Aircraft other than a public aircraft. (Ref: part 1)
(7) Commuter Category Airplanes: The commuter category is limited to propeller-driven, multiengine airplanes that have a seating configuration, excluding pilot seats, of 19 or less, and a maximum certificated takeoff weight of 19,000 pounds or less, intended for non-acrobatic operations. Commuter category airplanes are required to show compliance with part 23.
(8) Helicopter: A rotorcraft that, for its horizontal motion, depends principally on its engine-driven rotors. (Ref: part 1)
(9) Large Aircraft: Large aircraft means aircraft of more than 12,500 pounds, maximum certificated takeoff weight (Ref: part 1)
(10) Normal Category Airplane: The normal category is limited to airplanes that have a seating configuration, excluding pilot seats, of nine or less, a maximum certificated take-off weight of 12,500 pounds or less, and intended for nonacrobatic operation. Normal category airplanes are required to show compliance with 14 CFR part 23.
(11) Normal Category Rotorcraft: A normal category rotorcraft is a rotorcraft with a maximum weight of 7,000 pounds or less and that meets the regulatory requirements of part 27.
(12) Primary Category Aircraft: A primary category aircraft is an aircraft that (i) is unpowered, or is an airplane powered by a single, naturally aspirated engine with a 61-knot or less stall speed, or is a rotorcraft with a 6-pound per square foot main rotor disc loading limitations, and (ii) weighs not more than 2,700 pounds, and (iii) has a maximum seating capacity of not more than four persons, including the pilot, and (iv) has an unpressurized cabin. A primary category aircraft is required to meet the regulatory requirements of part 21, section 21.24.
(13) Propeller: A device for propelling an aircraft that has blades on an engine-driven shaft and that, when rotated, produces by its action on the air, a thrust approximately perpendicular to its plane of rotation. It includes control components normally supplied by its manufacturer, but does not include main and auxiliary rotors or rotating airfoils of engines. (Ref: part 1).
(14) Public Aircraft: Aircraft used only in the service of a government, or a political subdivision. It does not include any government-owned aircraft engaged in carrying persons or property for commercial purposes.
(Ref: part 1)
(15) Restricted Aircraft: Used for special purpose operations as defined in part 21, section 21.25
(16) Rotorcraft: A heavier-than-air aircraft that depends principally for its support in flight on the lift generated by one or more rotors (Ref: 14 CFR part 1).
(17) Small Aircraft: Small aircraft means aircraft of 12,500 pounds or less, maximum certificated take-off weight. (Ref: part 1)
(18) Subsonic airplane: A subsonic airplane means an airplane for which the maximum operating limit speed, MMO, does not exceed a Mach number of 1.
(19) Supersonic airplane: A supersonic airplane means an airplane for which the maximum operating limit speed, MMO, exceeds a Mach number of 1.
(20) Transport Category Aircraft: Those aircraft (large or small) that are demonstrated to meet and are certificated to the regulatory requirements of part 25 for transport category airplanes or part 29 for transport category rotorcraft.
(21) Jet Airplane: Any fixed wing airplane that is powered by a turbojet or turbofan engine regardless of whether it is an airplane certificated to part 23 (small or commuter aircraft) or part 25 (transport category aircraft)
(22) Turbo-propeller Airplane: An airplane whose primary source of thrust is from a propeller driven by a gas turbine engine.
(23) Utility Category Airplane: The utility category is limited to airplanes that have a seating configuration, excluding pilot seats, of nine or less, a maximum certificated take-off weight of 12,500 pounds or less, and intended for limited acrobatic operation. Utility category airplanes are required to show compliance with part 23.
5. ABBREVIATION AND ACRONYMS.
Note: In addition to the abbreviations and acronyms contained in this paragraph, section A36.6 of this AC contains symbols and units associated with the noise certification standards for subsonic transport category large airplanes and jet airplanes.
AC = FAA Advisory Circular A/C = Air-conditioning (Environmental Control System) ACO = Local FAA Aircraft Certification Office AEE = FAA Office of Environment and Energy AFM = Airplane Flight Manual ANM = FAA Northwest Mountain Region APU = Auxiliary Power Unit ARP = Aerospace Recommended Practice CDI = Course Deviation Indicator CG = Center of Gravity CFR = Code of Federal Regulations dB = decibels DER = Designated Engineering Representative DGPS = Differential Global Positioning System DMU = Distance Measuring Unit EPR = Engine Pressure Ratio (Power Setting Parameter) FAA = Federal Aviation Administration GDI = Glide-slope Deviation Indicator GPS = Global Positioning System Hz = oscillatory frequency, cycles per second
INS = Inertial Navigation System ICAO = International Civil Aviation Organization ILS = Instrument Landing System ISA = International Standard Atmosphere JAR = Joint Aviation Requirements (of Europe) Log = logarithmic value to base 10 m = meter MLW = Maximum Landing Weight MSL = Mean Sea Level altitude, feet MTOGW = Maximum Take-off Gross Weight N1 = Low Pressure Rotor Speed (Power Setting Parameter), rpm or % NAC = No Acoustical Change NCS = Noise Certification Specialist NIST = National Institute of Standards and Technology NPD = Noise-Power-Distance RFM = Rotorcraft Flight Manual RH = Relative Humidity, % rms = root-mean-square rpm = revolutions per minute SAE = Society of Automotive Engineers SBV = Surge Bleed Valve (engine internal operating valves) STC = Supplemental Type Certificate TIA = Type Inspection Authorization TC = Type Certificate TM = Technical Manual (“ICAO Environmental Technical Manual on the use of Procedures in the Noise Certification of Aircraft”) TSPI = Time Space Positional Information VNTSC = Volpe National Transportation System Center (DOT) VREF = Reference Landing Speed
6. - 7. RESERVED.
TABLE OF CONTENTS
1. PURPOSE1
2. CANCELLATION6
3. REFERENCES6
4. DEFINITIONS7
5. ABBREVIATION AND ACRONYMS9
6. - 7. RESERVED10
I. CERTIFICATION PROCEDURES FOR PRODUCT AND PARTS 14 CFR PART 2119
8. PART 21 - GENERAL19
9.-11. [RESERVED]19
II. NOISE STANDARDS: AIRCRAFT TYPE AND AIRWORTHINESS CERTIFICATION 14 CFR
PART 3620
12. PART 36 – SUBPART A-GENERAL20
13. Section 36.1 Applicability and definitions20
14. Section 36.1(a)20
15. Section 36.1(b)21
16. Section 36.1(c)22
17. Section 36.1(d)24
18. Section 36.1(e)25
19. Section 36.1(f)26
20. Section 36.1(g)26
21. Section 36.1(h)27
22. Section 36.2 Requirements as of date of application28
23. Section 36.3 Compatibility with airworthiness requirements29
24. Section 36.5 Limitation of part29
25. Section 36.6 Incorporations by reference30
26. Section 36.6(a)30
27. Section 36.6(b)30
28. Section 36.6(c)31
29. Section 36.6(d)31
30. Section 36.6(e)32
31. Section 36.7 Acoustical Change: Transport category large airplanes and jet airplanes37
32. Section 36.7(a)37
33. Section 36.7(b)37
34. Section 36.7(c)38
35. Section 36.7(d)39
36. Section 36.7(e)39
37. Section 36.9 Acoustical change: Propeller-driven small airplanes and propeller-driven commuter
category airplanes [To be completed later]40
38. Section 36.9(a) [To be completed later]40
39. Section 36.9(b) [To be completed later]40
40. Section 36.11 Acoustical Change: Helicopters40
41. Section 36.11(a)40
42. Section 36.11(b)41
43. Section 36.11(c)42
44. – 50. RESERVED42
III. SUBPART B— TRANSPORT CATEGORY LARGE AIRPLANES AND JET AIRPLANES43
51. Section 36.101 Noise measurement and evaluation43
52. Section 36.103 Noise limits44
53. Section 36.103(a)45
54. Section 36.103(b)45
IV. SUBPART C—RESERVED46
V. SUBPART D—NOISE LIMITS FOR SUPERSONIC TRANSPORT CATEGORY AIRPLANES47
55. Section 36.301 Noise limits: Concorde47
56. Section 36.301(a)47
57. Section 36.301(b)47
VI. SUBPART E--[RESERVED]48
VII. SUBPART F--PROPELLER-DRIVEN SMALL AIRPLANES AND PROPELLER-DRIVEN,
COMMUTER CATEGORY AIRPLANES49
58. Section 36.501 Noise Limits49
59. Section 36.501(a)49
60. Section 36.501(b)49
61. Section 36.501(c)49
VIII. SUBPART G--[RESERVED]50
62. -65 [RESERVED]50
IX. SUBPART H--HELICOPTERS51
66. Section 36.801 Noise measurement [To be completed later]51
67. Section 36.803 Noise evaluation and calculation [To be completed later]51
68. Section 36.805 Noise limits [To be completed later]51
69. Section 36.805(a) [To be completed later]51
70. Section 36.801(b) [To be completed later]51
71. Section 36.805(c)51
72. Section 36.805(d) [To be completed later]52
X. SUBPARTS I--N [RESERVED]53
73. –75 [RESERVED]53
XI. SUBPART E--RESERVED54
XII. SUBPART O--OPERATING LIMITATIONS AND INFORMATION55
76. Section 36.1501 Procedures, noise levels and other information55
77. Section 36.1501(a)55
78. Section 36.1501(b)61
79. Section 36.1581 Manuals, markings, and placards62
80. Section 36.1581(a)62
81. Section 36.1581(b)64
82. Section 36.1581(c)65
83. Section 36.1581(d)65
84. Section 36.1581(e)66
85. Section 36.1581(f)66
86. Section 36.1581(g)66
87. Section 36.1583 Noncomplying agricultural and fire fighting airplanes66
88. Section 36.1583(a)66
89. Section 36.1583(b)67
90. - 99 [RESERVED]68
XIII. APPENDIX A TO Part 36-AIRCRAFT NOISE MEASUREMENT AND EVALUATION UNDER §
36.101 69
100. Appendix A to Part 36-Aircraft Noise Measurement and Evaluation Under § 36.10169
101. Section A36.1 Introduction69
102. Section A36.1.169
103. Section A36.1.269
104. Section A36.1.369
105. Section A36.2. Noise certification test and measurement conditions69
106. Section A36.2.1 General69
107. Section A36.2.1.170
108. Section A36.2.2 Test environment70
109. Section A36.2.2.170
110. Section A36.2.2.271
111. Section A36.2.2.2(a)72
112. Section A36.2.2.2(b)72
113. Section A36.2.2.2(c)73
114. Section A36.2.2.2(d)74
115. Section A36.2.2.2(e)75