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Circular 169
Accident/Incident Reporting (ADREP): Annual Statistics - 1979
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CIRCULAR Circular 169-AN1106 ACCIDENTIINCIDENT REPORTING ADREP ANNUAL STATISTICS - 1979 Approved by the Secretary General and published under his authority INTERNATIONAL CIVIL AVIATION ORGANIZATION MONTREAL CANADA
Published in separate English, French and Spanish editions by the International Civil Aviation Organriation. AN correspondence, except orders and subscriptions, should be addressed to 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 Aviation Organization Attention Distribution Officer ' P.O. Box 400, Place de 'Aviation internationale 1000 Sherbrooke Street West Montreal, Quebec, Canada H3A 2R2 Argentina. El Ateneo, Pedro Garcia S.A.L.E. e I., Dpto. Compras - Importation, Patagones 2463, 1282 Buenos Aires. Egypt. ICAO Representative, Middle East and Eastern African Office, 16 Hassan Sabri, Zamalek, Cairo. France. Representant de I'OACI, Bureau Europe, 3 bis , villa Emile-Bergerat, 92522 NeuilIy-sur-Seine, Cedex. India. Oxford Book and Stationery Co., Scindia House, N 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 Norteamerica y Caribe, Apartado postal 5-377, Mexico 5, D.F. Peru. Representante de la OACI, Oficina Sudamerica, Apartado 4127, Lima 100. Senegal. Representant de I'OACI, Bureau Afrique, Boite postale 2356, Dakar. Spain. Libreria de Aeronautics y Asuonautica Sumaas, Desengaiio, 12-3O-3, Madrid 13. Sweden. C.E. Fritzes Kungl. Hovbokhandel, Box 16356, S-103 27 Stockholm. Thailand. ICAO Representative, Asia and Pacific Office, P.O. Box 614, Bangkok. United Kingdom. Civil Aviation Authority, Printing and Publications Services, Greville House, 37 Gratton Road, Cheltenham, Glos., GLSO 2BN. Do you receive the ICAO BULLETIN The ICAO Bulletin contains a concise account of the activities of the Organization as well as articles of interest to the aeronautical world. The Bulletin will also keep you up to date on the latest ICAO publica- tions. their contents, amendments, supplements, corrigenda, and prices. Available in three separate editions English, French and Spanish. Annual subscription U.S. 1 5.00 surface mail U.S. 20.00 air mail
CONTENTS Page Introduction ................................... 1 'TABLE I . Accidents and Incidents by Type of Operation and Aircraft Weight 1979 ...................... 3 TABLE I1 . Accidents and Incidents to Aeroplanes by Type of Operation and Powerplant 1979 ........................ 4 PART I ACCIDENTS TO AEROPLANES Scheduled Airline Operations .......................... 5 Xon-scheduled Airline Operations ........................ 11 Uther Airline Operations ............................ 17 Ceneral.4viation. ............................... 21 P.dPT I1 ACCIDENTS TO HELICOPTERS rl ine Operations ............................... 27 General Aviation ................................ 31 T'XK'I IIi INCIDENTS Airline Operations ............................... 35 C.eneralAviation ................................ 39
INTRODUCTION General This is the third publication of statistics from the ICAO AccidentIIncident Reporting ADREP System. These statistics are based on 1033 accidents and incidents which occurred in 1979 to aircraft of a maximum take-off weight of more than 2 250 kg 5 000 lb. The statistics were compiled in April 1982. 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 fiDREP system provides information in response to specific ADREP requests. Data Base These statistics are based on 1033 reported occurrences. Of these, 981 were Data Reports. Unfortunately 52 occurrences were reported only as Preliminary Reports, which do not include factors and cannot be used for statistics on factors. Limitations 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 981 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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