ICAO Circulars

Cir # TitleCircular 1 Airworthiness (Air): The Effect of Air Temperature Upon the

Rate of Climb of an Airplane Equipped with a Constant Speed Propeller

   Circular 2 Airworthiness (Air): A Philosophy of Aeroplane Strength Factors   Circular 3 Airport Economics (Preliminary Study)   Circular 4 Crash Fire and Rescue Equipment at Aerodromes   Circular 5 U.S.A. Omni Range Improvements   Circular 6 Aerodrome Approach Lights   Circular 7 Engineering Study of Factors Affecting the Choice of

Frequencies of DME   Circular 8 South Pacific Region: Status of Implementation of

Recommendations of First South Pacific Regional Air Navigation Meeting

   Circular 9 Collected Airport Tariff Scales   Circular 10 Qualifications of Meteorological Personnel   Circular 11 Measurement of Ambient Air Temperature in Flight   Circular 12 Aerodrome Obstruction Charts   Circular 13 Automatic Weather Stations   Circular 14 Facilitation of International Air Transport   Circular 15 Airworthiness (Air): The Effects of Atmospheric Humidity and

Temperature on the Engine Power and Take-Off Performance of a Hastings I

   Circular 16 Methods of Testing at Constant Attitude: (Polar, and

Longitudinal Characteristics)   Circular 17 The Effect of Turbine-Powered Civil Aircraft on the Design,

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Construction and Equipment of Land Aerodromes   Circular 18 Aircraft Accident Digest No. 1   Circular 19 An Aircraft Landing System Utilizing Decimetric Waves (UHF)   Circular 20 Identification of LF/MF Non-Directional Radio Beacons Utilizing

Frequency Modulation (F1)   Circular 21 Timed Approaches and Utilization of Radar in Spacing of Aircraft

on Final Approach (Reduction of Intervals Between Successive Approaches and Landings)

   Circular 22 Radio-Electric Storm Detection (Sferics)   Circular 23 Problems Associated with the Advent of Turbine-Engined

Airplanes   Circular 24 Aircraft Accident Digest No. 2   Circular 25 Runway Design Methods for Multiple Wheel Landing Gears   Circular 26 Terrain Clearance and Vertical Separation of Aircraft (Altimeter

Setting)   Circular 27 Technical Principles Respecting the Establishment of the

Aeronautical Fixed Telecommunications Network   Circular 28 Existing Forms of Commercial and Technical Co-operation

Between European Airlines in Regional Air Services   Circular 29 Specifications Adopted by Agencies of the United States

Government for the Production of Route Charts of the World, Scale 1:2,000,000

   Circular 30 Report on the Scandinavian Airlines System (SAS)   Circular 31 Aircraft Accident Digest No. 3   Circular 32 Activation of a Control Area   Circular 33 Control of IFR Air Traffic Along Airways Using Flight Progress

Boards   Circular 34 The Continuing Airworthiness of Aircraft in Service - Methods of

Handling Aircraft Defect Reports   Circular 35 North Atlantic Trial of an Augmented Programme of Upper Air

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Observations   Circular 36 Problems Arising in AGA Field as a Result of the Introduction of

Turbine Engined Aircraft   Circular 37 Strength of Runways   Circular 38 Aircraft Accident Digest No. 4   Circular 39 Aircraft Accident Digest No. 5   Circular 40 Aircraft Icing Objective Measurement and Classification   Circular 41 Suggested Aircraft Rescue and Fire Fighting Equipment and

Operating Procedures for Aircraft   Circular 42 Airborne Weather Radar   Circular 43 Ice and Snow on Runways   Circular 44 Atmospheric Turbulence in Relation to Air Navigation   Circular 45 Operational Control   Circular 46 Information Concerning the Long Distance Radio Navigation Aid

- CONSOL   Circular 47 Aircraft Accident Digest No. 6   Circular 48 Helicopter Operations   Circular 49 Flight Crew Fatigue and Flight Time Limitations   Circular 50 Aircraft Accident Digest No. 7   Circular 51 Provisional Acceptable Means of Compliance: Turbine Engines -

Type Test   Circular 52 Flight Crew Fatigue and Flight Time Limitations   Circular 53 Provisional Acceptable Means of Compliance: Testing of

Pressure-Sensitive Altimeters   Circular 54 Aircraft Accident Digest No. 8   Circular 55 Provisional Acceptable Means of Compliance: Emergency

Evacuation Provisions

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   Circular 56 Aircraft Accident Digest No. 9   Circular 57 Circular Not Issued   Circular 58 Provisional Acceptable Means of Compliance: Aeroplane

Performance   Circular 59 Aircraft Accident Digest No. 10   Circular 60 Operational Measures for Dealing with the Problem of Taking

Off From Slush- or Water- Covered Runways   Circular 61 Provisional Acceptable Means of Compliance: Fatigue Strength

of Aeroplane Structures   Circular 62 Aircraft Accident Digest No. 11   Circular 63 Handbook on Administrative Clauses in Bilateral Air Transport

Agreements   Circular 64 Aircraft Accident Digest No. 12   Circular 65 Provisional Acceptable Means of Compliance: Standardization of

Approved Aeroplane Flight Manuals   Circular 66 Panel on Origin and Destination Statistics 1959-1963: Final

Report   Circular 67 Selection of ICAO Facilitation Recommendations 1951-1963 (not

affecting Annex 9)   Circular 68 Privileges Granted to Foreign Private Pilots and to Foreign

Owners of Private Aircraft   Circular 69 Aircraft Accident Digest No. 13   Circular 70 Desirable Levels of Performance of Teletypewriter Personnel   Circular 71 Aircraft Accident Digest No. 14   Circular 72 Handbook on Capacity Clauses in Bilateral Air Transport

Agreements   Circular 73 A Review of the Economic Situation of Air Transport   Circular 74 Licensing Practices of States

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   Circular 75 Provisional Acceptable Means of Compliance: Aeroplane Flying

Qualities   Circular 76 North Atlantic Traffic Forecasts (March 1966)   Circular 77 Air Transport Operating Costs   Circular 78 Aircraft Accident Digest No. 15   Circular 79 Provisional Acceptable Means of Compliance: Gust Criteria   Circular 80 Development of International Air Passenger Travel - Africa   Circular 81 Provisional Acceptable Means of Compliance: Aeroplane Static

Pressure System - Uniform Method of Calibration of Position Error

   Circular 82 Aircraft Accident Digest No. 16   Circular 83 Arrangements for Aviation Training in Africa   Circular 84 Summary of Material Collected on Co-operative Agreements

and Arrangements   Circular 85 Safety in Aerial Work: Part 1. - Agricultural Operations   Circular 86 Maintenance of Competence (Flight Crew)   Circular 87 The Reliability and Availability of Electronic Equipment   Circular 88 Aircraft Accident Digest No. 17   Circular 89 A Review of the Economic Situation of Air Transport 1957-1967   Circular 90 Development of International Air Passenger Travel - Latin

America   Circular 91 The Effect of Variable Runway Slopes on Take-Off Runway

Lengths for Transport Aeroplanes   Circular 92 Trailing Vortices   Circular 93 Development of International Air Passenger Travel - Middle East   Circular 94 Provisional Acceptable Means of Compliance: Testing of

Pressure-Sensitive Altimeters - Type III

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   Circular 95 The Continuing Airworthiness of Aircraft in Service   Circular 96 Aircraft Accident Digest No. 18   Circular 97 Air Freight - Europe-Mediterranean Region   Circular 98 Treaty on Air Transport in Africa - Establishment of Air Afrique

(Yaoundé 1961)   Circular 99 Scandinavian Airlines System: Consortium Agreement and

Related Agreements      

TOPCircular 100 Report on the East African Airways Corporation   Circular 101

Development of Airport Revenues from Non-Aeronautical Sources (Concessions, Rentals and Free-Zones)

   Circular 102

Statistical Appraisal of Non-Scheduled Commercial Operations with Large Aircraft for the Year 1968

   Circular 103

Global Review of the Economics of En Route Air Navigation Facilities and Services

   Circular 104 Air Freight and Air Mail - Africa   Circular 105

A Review of the Economic Situation of Air Transport 1960 - 1970

   Circular 106

Mathematical Methods Relating to the Vertical Separation Problem

   Circular 107 Aircraft Accident Digest No. 19   Circular 108

Development of International Air Passenger Travel - East and South Asia and Pacific

   Circular 109 Planning of Air Traffic Services for SST Aircraft   Circular 110

Agreement Between the Civil Aviation Authorities of Denmark, The Netherlands, Norway, Sweden and Switzerland Covering

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the Technical Co-operation Agreements Between KLM, SAS, and Swissair

   Circular 111 Guidance Material on Area Navigation   Circular 112 Flight Recorders   Circular 113 Runway Visual Range Observing and Reporting Practices   Circular 114 Development of International Air Passenger Travel - Europe   Circular 115 The Economic Situation of International Airports - 1970   Circular 116 Noise Assessment for Land-Use Planning   Circular 117 Approval of Maintenance Organizations   Circular 118 Aircraft Accident Digest No. 20   Circular 119 Selection of ICAO Facilitation B-Type Recommendations   Circular 120

Methodology for the Derivation of Separation Minima Applied to the Spacing between Parallel Tracks in ATS Route Structures

   Circular 121 Implementation of All Weather Operations   Circular 122 A Review of the Economic Situation of Air Transport 1963-1973   Circular 123

Survey of International Air Transport Fares and Rates (September 1973)

   Circular 124 Air Freight - Asia and Pacific   Circular 125

Survey of International Air Transport Fares and Rates (September 1974)

   

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Circular 126 Guidance Material on SST Aircraft Operations   Circular 127 Circular Not Issued

   Circular 128

International Air Passenger and Freight Transport - North America

   Circular 129

Survey of International Air Transport Fares and Rates (September 1975)

   Circular 130 Circular Not Issued

   Circular 131

Regional Differences in Fares and Costs for International Scheduled Passenger Transport - 1975

   Circular 132 Aircraft Accident Digest No. 21   Circular 133 A Review of the Economic Situation of Air Transport 1966-1976   Circular 134 Control of Aircraft Engine Emissions   Circular 135 Tariff Enforcement   Circular 136 Policy Concerning International Non-scheduled Air Transport   Circular 137 Regulation of Capacity in International Air Transport Services   Circular 138

Survey of International Air Transport Fares and Rates (September 1976)

   Circular 139 Aviation Use of Omega   Circular 140

Regional Differences in Fares and Costs for International Scheduled Passenger Transport - 1976

   Circular 141

International Air Passenger and Freight Transport - Latin America and The Caribbean

   

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Circular 142 Development of Non-aeronautical Revenues at Airports   Circular 143

Survey of International Air Transport Fares and Rates (September 1977)

   Circular 144

Regional Differences in Fares, Rates and Costs for International Air Transport - 1977

   Circular 145

Airport and Route Facilities Financial Data and Summary Traffic Data - 1976

   Circular 146 Aircraft Accident Digest No. 22   Circular 147 International Air Passenger and Freight Transport - Africa   Circular 148 Surface Movement Guidance and Control Systems   Circular 149 Future Availability of Aviation Fuel   Circular 150

Surveys of International Air Transport Fares and Rates (September 1978 and September 1979)

   Circular 151

Airport and Route Facilities Financial Data and Summary Traffic Data - 1977

   Circular 152 Selection of ICAO Facilitation B-type Recommendations   Circular 153 Aircraft Accident Digest No. 23   Circular 154

Regional Differences in Fares, Rates and Costs for International Air Transport - 1978

   Circular 155 Accident/Incident Reporting (ADREP): Annual Statistics - 1977   Circular 156 Measures to Improve the Aeronautical Information Services   Circular 157

Assessment of Technological Progress Made in Reduction of Noise From Subsonic and Supersonic Jet Aeroplanes

   

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Circular 158

A Review of the Economic Situation of Air Transport 1969 - 1979

   Circular 159 Report on the Area Forecast System   Circular 160

International Air Passenger and Freight Transport - Asia and The Pacific

   Circular 161

Survey of International Air Transport Fares and Rates (September 1980)

   Circular 162

Airport and Route Facilities Financial Data and Summary Traffic Data - 1978

   Circular 163 Accident/Incident Reporting (ADREP): Annual Statistics - 1978   Circular 164

Regional Differences in Fares, Rates and Costs for International Air Transport - 1979

   Circular 165 Microwave Landing System (MLS) - Advisory Circular No.1   Circular 166 Aircraft Accident Digest No. 24   Circular 167 International Air Passenger and Freight Transport - Middle East   Circular 168

Survey of International Air Transport Fares and Rates (September 1981)

   Circular 169 Accident/Incident Reporting (ADREP): Annual Statistics - 1979   Circular 170 Accident/Incident Reporting (ADREP): Annual Statistics - 1980   Circular 171

Regional Differences in Fares, Rates and Costs for International Air Transport - 1980

   Circular 172 Aircraft Accident Digest No. 25   Circular 173 Aircraft Accident Digest No. 26   

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Circular 174 Secondary Surveillance Radar Mode S - Advisory Circular   Circular 175

International Air Passenger and Freight Transport - Latin America and The Caribbean

   Circular 176

Survey of International Air Transport Fares and Rates (September 1982)

   Circular 177 A Review of the Situation of Air Transport 1972 - 1982   Circular 178 Aircraft Accident Digest No. 27   Circular 179

Airport and Route Facilities Financial Data and Summary Traffic Data - 1979-1980

   Circular 180

Regional Differences in Fares, Rates and Costs for International Air Transport - 1981

   Circular 181 Accident/Incident Reporting (ADREP): Annual Statistics - 1981   Circular 182

Survey of International Air Transport Fares and Rates (September 1983)

   Circular 183

ATS Speech Circuits - Guidance Material on Switched Network Planning

   Circular 184

Airport and Route Facilities Financial Data and Summary Traffic Data - 1981-1982

   Circular 185

Satellite-aided Search and Rescue - The COSPAS-SARSAT System

   Circular 186 Wind Shear   Circular 187 Instrument Approach Chart - ICAO Guidance to Chart Makers   Circular 188

Regional Differences in Fares, Rates and Costs for International Air Transport - 1982

   Circular 189 International Air Passenger and Freight Transport - Africa   

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Circular 190 Aircraft Accident Digest No. 28   Circular 191 Aircraft Accident Digest No. 29   Circular 192

Survey of International Air Transport Fares and Rates (September 1984)

   Circular 193

Regional Differences in Fares, Rates and Costs for International Air Transport - 1983

   Circular 194 Accident/Incident Reporting (ADREP): Annual Statistics - 1982   Circular 195 Airborne Collision Avoidance Systems   Circular 196 Aircraft Accident Digest No. 30   Circular 197 Accident/Incident Reporting (ADREP): Annual Statistics - 1983   Circular 198

Survey of International Air Transport Fares and Rates (September 1985)

   Circular 199

Regional Differences in Fares, Rates and Costs for International Air Transport - 1984

      

TOPCircular 200

The Economic Situation of Air Transport: Review and Outlook - 1986

   Circular 201

International Air Passenger and Freight Transport - Asia and Pacific

   Circular 202 Aircraft Accident Digest No. 31   Circular 203 Accident/Incident Reporting (ADREP): Annual Statistics - 1984   Circular 204

Survey of International Air Transport Fares and Rates (September 1986)

   Circular 20 Recommended Method for Computing Noise Contours around

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5 Airports   Circular 206

Regional Differences in Fares, Rates and Costs for International Air Transport - 1985

   Circular 207

Simultaneous Operations on Parallel or Near-Parallel Instrument Runways (SOIR)

   Circular 208

Survey of International Air Transport Fares and Rates (September 1987)

   Circular 209 Accident/Incident Reporting (ADREP): Annual Statistics - 1985   Circular 210

Regional Differences in Fares, Rates and Costs for International Air Transport - 1986

   Circular 211 Aerodrome Flight Information Service (AFIS)   Circular 212 Secondary Surveillance Radar Mode S Data Link   Circular 213

Pilot Skills to make "Look-Out" more effective in Visual Collision Avoidance

   Circular 214

Guidance Material on the Regulation of Computer Reservation Systems

   Circular 215

Guidance Material on the Avoidance or Resolution of Conflicts over the Application of Competition Laws to International Air Transport

   Circular 216

Human Factors Digest No. 1 - Fundamental Human Factors Concepts

   Circular 217

Human Factors Digest No. 2 - Flight Crew Training: Cockpit Resource Management (CRM) and Line-Oriented Flight Training (LOFT)

   Circular 218

Economic Implications of Future Noise Restrictions on Subsonic Jet Aircraft

   Circular 219

Survey of International Air Transport Fares and Rates (September 1988)

   Circular 220

Regional Differences in Fares, Rates and Costs for International Air Transport - 1987

   

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Circular 221 International Air Passenger and Freight Transport - Middle East   Circular 222

The Economic Situation of Air Transport: Review and Outlook - 1978 to the Year 2000

   Circular 223 Accident/Incident Reporting (ADREP): Annual Statistics - 1986   Circular 224

Survey of International Air Transport Fares and Rates (September 1989)

   Circular 225 Study on the Refinement of the Satellite Broadcast Concept   Circular 226 Automatic Dependent Surveillance   Circular 227

Human Factors Digest No. 3 - Training of Operational Personnel in Human Factors

   Circular 228

Regional Differences in Fares, Rates and Costs for International Air Transport - 1988

   Circular 229

Human Factors Digest No. 4 - Proceedings of the ICAO Human Factors Seminar

   Circular 230 Accident/Incident Reporting (ADREP): Annual Statistics - 1987   Circular 231

Survey of International Air Transport Fares and Rates (September 1990)

   Circular 232 Aircraft Accident Digest No. 32   Circular 233 Accident/Incident Reporting (ADREP): Annual Statistics - 1988   Circular 234

Human Factors Digest No. 5 - Operational Implications of Automation in Advanced Technology Flight Decks

   Circular 235

Regional Differences in Fares, Rates and Costs for International Air Transport - 1989

   Circular 236

Investment Requirements for Aircraft Fleets and for Airport and Route Facility Infrastructure to the Year 2010

   

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Circular 237 Outlook for Air Transport to the Year 2001   Circular 238 Human Factors Digest No. 6 - Ergonomics   Circular 239

Survey of International Air Transport Fares and Rates (September 1991)

   Circular 240

Human Factors Digest No. 7 - Investigation of Human Factors in Accidents and Incidents

   Circular 241

Human Factors Digest No. 8 - Human Factors in Air Traffic Control

   Circular 242

Regional Differences in Fares, Rates and Costs for International Air Transport - 1990

   Circular 243

Human Factors Digest No. 9 - Proceedings of the Second ICAO Flight Safety and Human Factors Global Symposium (Washington D.C., April 1993)

   Circular 244 The World of Civil Aviation, 1992-1995   Circular 245 Aircraft Accident Digest No. 33   Circular 246

Survey of International Air Transport Fares and Rates (September 1992)

   Circular 247

Human Factors Digest No. 10 - Human Factors, Management and Organization

   Circular 248

Regional Differences in Fares, Rates and Costs for International Air Transport - 1991

   Circular 249

Human Factors Digest No. 11 - Human Factors in CNS/ATM Systems

   Circular 250 The World of Civil Aviation, 1993-1996   Circular 251 Circular Not Issued

   Circular 252 Outlook for Air Transport to the Year 2003   

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Circular 253

Human Factors Digest No. 12 - Human Factors in Aircraft Maintenance and Inspection

   Circular 254

Regional Differences in Fares, Rates and Costs for International Air Transport - 1992

   Circular 255

Survey of International Air Transport Fares and Rates (September 1993)

   Circular 256

Automatic Dependent Surveillance (ADS) and Air Traffic Services (ATS) Data Link Applications

   Circular 257 Economics of Satellite-based Air Navigation Services   Circular 258 The World of Civil Aviation, 1994-1997   Circular 259 Aircraft Accident Digest No. 34   Circular 260 Aircraft Accident Digest No. 35   Circular 261

A Planning Guide for the Evolutionary Development of the Data Interchange Portion of the Aeronautical Fixed Service

   Circular 262 Aircraft Accident Digest No. 36   Circular 263 Aircraft Accident Digest No. 37   Circular 264 Circular Not Issued

   Circular 265 The World of Civil Aviation, 1995-1998   Circular 266

Human Factors Digest No. 13 - Proceedings of the Third ICAO Global Flight Safety and Human Factors Symposium (Auckland, April 1996)

   Circular 267

Guidelines for the Introduction and Operational Use of the Global Navigation Satellite System (GNSS)

   Circular 268 Accident/Incident Reporting (ADREP): Annual Statistics - 1996   

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Circular 269 Implications of Airline Codesharing   Circular 270 Outlook for Air Transport to the Year 2005   Circular 271 The World of Civil Aviation, 1996-1999   Circular 272 Accident/Incident Reporting (ADREP): Annual Statistics - 1997   Circular 273 The World of Civil Aviation, 1997-2000   Circular 274 Access to Air Transport by Persons with Disabilities   Circular 275 The World of Civil Aviation, 1998-2001   Circular 276 Accident/Incident Reporting (ADREP): Annual Statistics - 1998   Circular 277

Human Factors Digest No. 14 - Proceedings of the Fourth ICAO Global Flight Safety and Human Factors Symposium (Santiago, Chile, April 1999)

   Circular 278 National Plan for CNS/ATM Systems   Circular 279 The World of Civil Aviation, 1999-2002   Circular 280

Regional Differences in International Airline Operating Economics: 1997

   Circular 281 Outlook for Air Transport to the Year 2010   Circular 282 Accident/Incident Reporting (ADREP): Annual Statistics - 1999   Circular 283

Regulatory Implications of the Allocation of Flight Departure and Arrival Slots at International Airports

   Circular 284

Privatization in the Provision of Airports and Air Navigation Services

   

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Circular 285

Guidance on Assistance to Aircraft Accident Victims and Their Families

   Circular 286

Highlights in the Economic Development of Airports and Air Navigation Services

   Circular 287 The World of Civil Aviation, 2000   Circular 288

Guidance Material on the Legal Aspects of Unruly/Disruptive Passengers

   Circular 289 Accident/Incident Reporting (ADREP): Annual Statistics - 2000   Circular 290 Aircraft Accident Digest No. 38   Circular 291 The World of Civil Aviation, 2001-2004   Circular 292 Economic Contribution of Civil Aviation   Circular 293

Regional Differences in International Airline Operating Economics: 1998 and 1999

   Circular 294 Accident/Incident Reporting (ADREP): Annual Statistics - 2001   Circular 295

Guidance on the Implementation of Article 83 bis of the Convention on International Civil Aviation

   Circular 296 Aircraft Accident Digest No. 39   Circular 297 Accident/Incident Reporting (ADREP): Annual Statistics - 2002   Circular 298 Training Guidelines for Aircraft Accident Investigators   Circular 299 The World of Civil Aviation, 2002-2005      

TOPCircular 30 Human Factors Digest No. 15 - Human Factors in Cabin Safety

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0    Circular 301

New Larger Aeroplanes — Infringement of the Obstacle Free Zone: Operational Measures and Aeronautical Study

   Circular 302

Human Factors Digest No. 16 - Cross-Cultural Factors in Aviation Safety

   Circular 303

Operational Opportunities to Minimize Fuel Use and Reduce Emissions

   Circular 304 Outlook for Air Transport to the Year 2015   Circular 305 Operation of New Larger Aeroplanes at Existing Aerodromes   Circular 306

Regional Differences in International Airline Operating Economics: 2000 and 2001

   Circular 307 The World of Civil Aviation, 2003-2006   Circular 308 Airline Traffic Forecasts and Financial Trends - 2005 to 2007   Circular 309 Guidelines on Passenger Name Record (PNR) Data   Circular 310

Regional Differences in International Airline Operating Economics, 2002 and 2003

   Circular 311 Cancelled   Circular 312 Airline Traffic Forecasts and Financial Trends – 2006 to 2008   Circular 313 Outlook for Air Transport to the Year 2025   Circular 314 Threat and Error Management (TEM) in Air Traffic Control   Circular 315 Hazards at Aircraft Accident Sites   Circular 31 Regional Differences in International Airline Operating

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6 Economics, 2004 and 2005   Circular 317

Effects of PANS-OPS Noise Abatement Departure Procedures on Noise and Gaseous Emissions

   Circular 318 Language Testing Criteria for Global Harmonization   Circular 319

A Unified Framework for Collision Risk Modelling in Support of the Manual on Airspace Planning Methodology the Determination of Separation Minima (Doc 9689)

   Circular 321

Guidelines for the implementation of GNSS longitudinal separation minima

   Circular 323 Guidelines for Aviation English Training Programmes   Circular 327

Regional Differences in International Airline Operating Economics: 2006 and 2007

   Circular 328

Unmanned Aircraft Systems (UAS) Circular*** Disclaimer ***

   Circular 330

Civil/Military Cooperation in Air Traffic Management*** Disclaimer ***

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