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Circular 170
Accident/Incident Reporting (ADREP): Annual Statistics - 1980
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CIRCULAR ACClDENTllNClDENT REPORTING ADREP ANNUAL STATISTICS -- 1 980 Approved by the Secretary General and published under his rruthurity INTERNATIONAL I CiViL AVCAT1ON ORGANEZATIOM MONTREAL CANADA
Published in separate English, French and Spanish editions by the International Civil A viation Organization. A I correspondence, except orders and subscriprions, should be addressed lo the Secretary General. Orders for this publication should be sent to one of the following addresses, together with the appropriate remittance by bank draft or post office money order in U.S. dollars or the currency of the country in which the order is placed. International Civil Avia tion Ormnization Attention Distribution Ofices 1000 Sherbrmke Street West, Suite 400 Montreal, Quebec Canada H3A 2R2 Argentina. El kteneo, Pedro Garcia S.A.L.E. e I., Dpto. Cornpras - Importacibn, Patagones 2463, 1282 Buenos Aires. Egypr. KAO Represeritative, Middle East and Eastern African Office, Ib Hassan Sabri. Zamalek, Cairo. France. Representant de I'OACI, Burmu Europe, 3 bis, villa Emile-Bergerat, 92522 Neuilly-sur-Seine, Cedex. India. Oxford Book and Stationery Co., Scindia House, New Delhi or 17 Park Street, Calcutta. Japan. Japan Civil Aviation Promotion Foundation, 15- 12. 1-chome, Toranomon, Minato-Ku, Tokyo. Mexico. Representante de la OACI, Oficina Norteamtrica y Carib, Apartado postal 5-377. Mexico 5, D.F. 5 Peru. Representante de la OACI, Oficina Sudamirica, Apartado 4127, Lima 100. Senegal. Representant de I'OACI, Bureau Afrique, Boite postale 2356, Dakar. Spak Libreria de Aeronautica y Astronautics Sumaas, Desengaiio, 12-3'-3, Madrid 13. Sweden. C.E. Friues Kungi. Hovhkhandel, Box 16356, 5-103 27 Stockholm. Thaihd. ICAO Represenlative, Asia and Pacific Office. P.O. Box 614, Bangkok, United Kingdom. Civil Aviation Authority, Printing and Publications Services, Greville House, 37 Grattoa Road, Cheltenharn, Glos., GLSO 2BN. Do you receive the ICAO BULLETIN The ICAO Bulletin contains a concise account of the activities of the Organization as wsfl as articles of intenst to ths aeronautical wartd. The Bulletin will atso keep you up t6 date on the latest ICAO publica- tions, their contents, amendments, supplements. corrigenda, and prices. Available in three separate editiws English. Fmch and Spanish. Annual subscription U.5. 81 5.00 suHace mail US. 20.00 air mail.
CONTENTS ................................... Introduction TABLE I - Accidents and Incidents by Type of Operation and Aircraft Weight 1980. ..................... TABLE 11 - Accidents and Incidents to Aeroplanes by Type of Operation ....................... and Powerplant 1980. PART I ACCIDENTS TO AEROPLANES .......................... Scheduled Airline Operations ........................ Non-scheduled Airline Operations ............................ Other Airline Operations ............................... GeneralAviation. PART I1 ACCIDENTS TO HELICOPTERS .............................. AirlineOperations. .............................. GeneralAviation.. PART 111 INCIDENTS .............................. AirlineOperations. GeneralAviation................................
INTRODUCTION General This is the fourth publication of statistics from the ICAO ccidentfncident Reporting ADREP System. These statistics are based on 841 accidents and incidents which occurred in 1990 to aircraft of a maximum take-off weight of more than 2 250 kg 5 000 lb. The statistics were compiled in November 1952. Purpose The purpose of the ADREP statistics is to provide simple data which may be useful for general safety studies and accident prevention. For more specific needs the ADREP system provides information in response to specific ADREP requests. Data Base These statistics are based on 841 reported occurrences. Of these, 779 were Data Reports. Unfortunately 63 occurrences were reported only as Preliminary Reports, which do not include factors and cannot be used for statistics on factors. When considering the information presented, the reader must be aware of the following limitations a Only occurrences reported to ICAO on the ADREP system are included b The ADREP Manual contains specific coding instructions. Nonetheless there may be some unintentional bias on the part of persons coding since ultimately the coding must be done by humans one cannot assume that judgemental bias has been totally eliminated in the ADREP reporting forms, particularly with respect to the coding of factors c Factors statistics are based only on the 778 Accident/Incident Data Reports received from States d Some accidents are reported to ICAO on computer tapes and are processed through a conversion programme before they are entered in the ADREP data bank. Since the data so reported may not be fully compatible with the ADREP system recording precision is not attainable in all cases. For example, the ADREP system for type of occurrence subdivides "Gear Collapsed" into "Nose gear, Main gear, Complete gear and Other gear" with a specific code for each. However, the information received on a computer tape may indicate only "Gear collapsed".
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