CUE Research · Exploratory data

Aviation Incidents and Master Number 11: The Data

Three datasets for exploration: the 200 deadliest airline disasters, 1,286 fatal airline incidents since 1950, and 13,757 documented technical failures, each read by CUE’s date energies.

An 11 date is the 11th, 20th or 29th of a month, or a full date that reduces to 11 under CUE’s engine (dates whose digits total 20, 29, 38 and so on). The calendar share is how often the same kind of date occurs on the calendar in the same years. This page presents the data only.

At a glance

DatasetRecordsOn 11 datesShareCalendar share
200 deadliest airline disasters, 1950–20252005025.0%19.7%
All fatal airline incidents, 1950–20251,28626520.6%19.7%
Technical failures (NTSB), 1982–202513,7572,73419.9%19.7%
Pilot- or weather-caused events (NTSB), 1982–202560,84712,07419.8%19.7%

Fatal airline incidents, by severity

Every fatal commercial passenger incident in the dataset. Filter by severity, era or region.

265 of 1286 incidents fell on an 11 date (20.6%). Calendar share for the same years: 19.7%.

Share carrying 11 Calendar share for the same yearsDeaths per incident along the bottom
Deaths per incidentIncidentsOn 11 datesShareCalendar share
1–42275122.5%19.7%
5–91122421.4%19.7%
10–191633622.1%19.7%
20–493425716.7%19.7%
50–992565119.9%19.7%
100–1491122925.9%19.7%
150–199451226.7%19.7%
200+29517.2%19.6%
Incidents on 11 datesOther incidents
Share of all deaths20.8%79.2%
Average deaths48.447.8
Median deaths2730
Share with 100 or more deaths17.4%13.7%

Technical failures, by severity

US civil aviation events where the NTSB named an equipment failure, malfunction, fatigue, design or maintenance fault as a cause. Switch to pilot- or weather-caused events, pick a period or an aircraft system.

2,734 of 13,757 events fell on an 11 date (19.9%). Calendar share for the same months and weekdays: 19.7%.

Share on 11 dates Calendar share, same months and weekdays
Aircraft systemFailuresOn 11 datesShareCalendar share
Engine5,455109120.0%19.7%
Landing gear2,73553919.7%19.6%
Fuel system1,98737618.9%19.7%
Propeller or rotor1,19024520.6%19.7%
Flight controls89517619.7%19.7%
Structural77215820.5%19.8%
Electrical4059323.0%19.8%
Hydraulic2354619.6%19.8%
Avionics581424.1%19.4%
Other1,00019219.2%19.9%

Every CUE energy

The same count for each energy: the day energy equals the number, or the full date reduces to it.

EnergyFatal incidentsShareCalendarTechnical failuresShareCalendar
124118.7%19.1%2,75420.0%20.6%
329322.8%22.6%3,12222.7%22.6%
422917.8%16.8%2,33717.0%16.6%
526320.5%19.9%2,75620.0%19.8%
621016.3%15.2%2,14515.6%15.7%
722917.8%19.8%2,70719.7%19.8%
825519.8%19.8%2,73719.9%19.8%
922717.7%19.8%2,69719.6%19.8%
1126520.6%19.7%2,73419.9%19.7%
22594.6%5.3%7615.5%5.4%
33836.5%5.3%6564.8%4.7%

By era and region

GroupFatal incidentsOn 11 datesShareCalendar share
1950–19693657119.5%19.7%
1970–19894187718.4%19.7%
1990–20093487521.6%19.7%
2010–20251554227.1%19.7%
North America2355724.3%19.7%
Europe2745520.1%19.7%
Asia2033617.7%19.7%
Africa781721.8%19.7%
Latin America1322821.2%19.7%
Middle East551221.8%19.7%
No country recorded2925719.5%19.7%
Global128626520.6%19.7%
The 200 deadliest disasters, with every calculation
#IncidentDateDeathsAirlineCalculation11 dateSources
1Tenerife airport disaster1977-03-27583Pan Am / KLMmonth 3 → 3; day 27 → 9; year 1977 → 24; total 36 → 9. Day energy: 27 → 9.– Wikidata · ASN
2Japan Air Lines Flight 1231985-08-12520Japan Airlinesmonth 8 → 8; day 12 → 3; year 1985 → 23; total 34 → 7. Day energy: 12 → 3.– Wikidata · ASN
3Charkhi Dadri mid-air collision1996-11-12349Saudia / Kazakhstan Airlinesmonth 11 → 11; day 12 → 3; year 1996 → 25; total 39 → 3. Day energy: 12 → 3.– Wikidata · ASN
4Turkish Airlines Flight 9811974-03-03346Turkish Airlinesmonth 3 → 3; day 3 → 3; year 1974 → 21; total 27 → 9. Day energy: 3 → 3.– Wikidata · ASN
5Air India Flight 1821985-06-23329Air Indiamonth 6 → 6; day 23 → 5; year 1985 → 23; total 34 → 7. Day energy: 23 → 5.– Wikidata · ASN
6Saudia Flight 1631980-08-19301Saudiamonth 8 → 8; day 19 → 10; year 1980 → 18; total 36 → 9. Day energy: 19 → 1.– Wikidata · ASN
7Malaysia Airlines Flight 172014-07-17298Malaysia Airlinesmonth 7 → 7; day 17 → 8; year 2014 → 7; total 22 → 22. Day energy: 17 → 8.– Wikidata
8Iran Air Flight 655 shootdown1988-07-03290Iran Airmonth 7 → 7; day 3 → 3; year 1988 → 26; total 36 → 9. Day energy: 3 → 3.– Wikidata · ASN
9American Airlines Flight 1911979-05-25273American Airlinesmonth 5 → 5; day 25 → 7; year 1979 → 26; total 38 → 11. Day energy: 25 → 7.Yes Wikidata · ASN
10Korean Air Lines Flight 007 crash1983-09-01269Korean Airmonth 9 → 9; day 1 → 1; year 1983 → 21; total 31 → 4. Day energy: 1 → 1.– Wikidata · ASN
11American Airlines Flight 5872001-11-12265American Airlinesmonth 11 → 11; day 12 → 3; year 2001 → 3; total 17 → 8. Day energy: 12 → 3.– Wikidata · ASN
12China Airlines Flight 1401994-04-26264China Airlinesmonth 4 → 4; day 26 → 8; year 1994 → 23; total 35 → 8. Day energy: 26 → 8.– Wikidata · ASN
13Nigeria Airways Flight 21201991-07-11261Nolisairmonth 7 → 7; day 11 → 11; year 1991 → 20; total 38 → 11. Day energy: 11 → 11.Yes Wikidata · ASN
14Air India Flight 1712025-06-12260Air Indiamonth 6 → 6; day 12 → 3; year 2025 → 9; total 18 → 9. Day energy: 12 → 3.– Wikidata
15Air New Zealand Flight 9011979-11-28257Air New Zealandmonth 11 → 11; day 28 → 10; year 1979 → 26; total 47 → 11. Day energy: 28 → 1.Yes Wikidata · ASN
16Arrow Air Flight 1285R1985-12-12256Arrow Airmonth 12 → 3; day 12 → 3; year 1985 → 23; total 29 → 11. Day energy: 12 → 3.Yes Wikidata · ASN
17Pan Am Flight 1031988-12-21243Pan Ammonth 12 → 3; day 21 → 3; year 1988 → 26; total 32 → 5. Day energy: 21 → 3.– Wikidata · ASN
18Malaysia Airlines Flight 3702014-03-08239Malaysia Airlinesmonth 3 → 3; day 8 → 8; year 2014 → 7; total 18 → 9. Day energy: 8 → 8.– Wikidata · ASN
19Garuda Indonesia Flight 1521997-09-26234Garuda Indonesiamonth 9 → 9; day 26 → 8; year 1997 → 26; total 43 → 7. Day energy: 26 → 8.– Wikidata · ASN
20TWA Flight 8001996-07-17230Trans World Airlinesmonth 7 → 7; day 17 → 8; year 1996 → 25; total 40 → 4. Day energy: 17 → 8.– Wikidata · ASN
21Swissair Flight 1111998-09-02229Swissairmonth 9 → 9; day 2 → 2; year 1998 → 27; total 38 → 11. Day energy: 2 → 2.Yes Wikidata · ASN
22Air France Flight 4472009-06-01228Air Francemonth 6 → 6; day 1 → 1; year 2009 → 11; total 18 → 9. Day energy: 1 → 1.– Wikidata · ASN
23Korean Air Flight 8011997-08-06228Korean Airmonth 8 → 8; day 6 → 6; year 1997 → 26; total 40 → 4. Day energy: 6 → 6.– Wikidata · ASN
24China Airlines Flight 6112002-05-25225China Airlinesmonth 5 → 5; day 25 → 7; year 2002 → 4; total 16 → 7. Day energy: 25 → 7.– Wikidata · ASN
25Metrojet Flight 92682015-10-31224Metrojetmonth 10 → 1; day 31 → 4; year 2015 → 8; total 13 → 4. Day energy: 31 → 4.– Wikidata · ASN
26Lauda Air Flight 0041991-05-26223Lauda Airmonth 5 → 5; day 26 → 8; year 1991 → 20; total 33 → 33. Day energy: 26 → 8.– Wikidata · ASN
27EgyptAir Flight 9901999-10-31216EgyptAirmonth 10 → 1; day 31 → 4; year 1999 → 28; total 33 → 33. Day energy: 31 → 4.– Wikidata · ASN
28Air India Flight 8551978-01-01213Air Indiamonth 1 → 1; day 1 → 1; year 1978 → 25; total 27 → 9. Day energy: 1 → 1.– Wikidata · ASN
29Aeroflot Flight 74251985-07-10200Aeroflotmonth 7 → 7; day 10 → 1; year 1985 → 23; total 31 → 4. Day energy: 10 → 1.– Wikidata · ASN
30China Airlines Flight 6761998-02-16196China Airlinesmonth 2 → 2; day 16 → 7; year 1998 → 27; total 36 → 9. Day energy: 16 → 7.– Wikidata · ASN
31Martinair Flight 1381974-12-04191Martinairmonth 12 → 3; day 4 → 4; year 1974 → 21; total 28 → 28. Day energy: 4 → 4.– Wikidata · ASN
32American Airlines Flight 772001-09-11189American Airlinesmonth 9 → 9; day 11 → 11; year 2001 → 3; total 23 → 5. Day energy: 11 → 11.Yes Wikidata · ASN
33Birgenair Flight 3011996-02-06189Birgenairmonth 2 → 2; day 6 → 6; year 1996 → 25; total 33 → 33. Day energy: 6 → 6.– Wikidata · ASN
34Lion Air Flight 610 Crash2018-10-29189Lion Airmonth 10 → 1; day 29 → 11; year 2018 → 11; total 23 → 5. Day energy: 29 → 11.Yes Wikidata · ASN
35Agadir air disaster1975-08-03188Royal Jordanianmonth 8 → 8; day 3 → 3; year 1975 → 22; total 33 → 33. Day energy: 3 → 3.– Wikidata · ASN
36TAM Airlines Flight 30542007-07-17187LATAM Brasilmonth 7 → 7; day 17 → 8; year 2007 → 9; total 24 → 6. Day energy: 17 → 8.– Wikidata · ASN
37LOT Polish Airlines Flight 50551987-05-09183LOT Polish Airlinesmonth 5 → 5; day 9 → 9; year 1987 → 25; total 39 → 3. Day energy: 9 → 9.– Wikidata · ASN
38Icelandic Airlines Flight 0011978-11-15183Loftleiðirmonth 11 → 11; day 15 → 6; year 1978 → 25; total 42 → 6. Day energy: 15 → 6.– Wikidata · ASN
39Avianca Flight 0111983-11-27181Aviancamonth 11 → 11; day 27 → 9; year 1983 → 21; total 41 → 5. Day energy: 27 → 9.– Wikidata · ASN
40Inex-Adria Aviopromet Flight 13081981-12-01181Adria Airwaysmonth 12 → 3; day 1 → 1; year 1981 → 19; total 23 → 5. Day energy: 1 → 1.– Wikidata · ASN
41Jeju Air Flight 22162024-12-29179Jeju Airmonth 12 → 3; day 29 → 11; year 2024 → 8; total 22 → 22. Day energy: 29 → 11.Yes Wikidata
421979 Dniprodzerzhynsk mid-air collision1979-08-11178Aeroflotmonth 8 → 8; day 11 → 11; year 1979 → 26; total 45 → 9. Day energy: 11 → 11.Yes Wikidata · ASN
43Kano air disaster1973-01-22176Royal Jordanianmonth 1 → 1; day 22 → 22; year 1973 → 20; total 43 → 7. Day energy: 22 → 22.– Wikidata · ASN
441976 Zagreb mid-air collision1976-09-10176British Airways / Adria Airwaysmonth 9 → 9; day 10 → 1; year 1976 → 23; total 33 → 33. Day energy: 10 → 1.– Wikidata · ASN
45Surinam Airways Flight 7641989-06-07176Surinam Airwaysmonth 6 → 6; day 7 → 7; year 1989 → 27; total 40 → 4. Day energy: 7 → 7.– Wikidata · ASN
46Aeroflot Flight 2171972-10-13174Aeroflotmonth 10 → 1; day 13 → 4; year 1972 → 19; total 24 → 6. Day energy: 13 → 4.– Wikidata · ASN
47Aeroflot Flight 33521984-10-11174Aeroflotmonth 10 → 1; day 11 → 11; year 1984 → 22; total 34 → 7. Day energy: 11 → 11.Yes Wikidata · ASN
48UTA 772 bombing1989-09-19170Union de Transports Aériensmonth 9 → 9; day 19 → 10; year 1989 → 27; total 46 → 1. Day energy: 19 → 1.– Wikidata · ASN
49Pulkovo Aviation Enterprise Flight 6122006-08-22170Pulkovo Aviation Enterprisemonth 8 → 8; day 22 → 22; year 2006 → 8; total 38 → 11. Day energy: 22 → 22.Yes Wikidata · ASN
50Kenya Airways Flight 4312000-01-30169Kenya Airwaysmonth 1 → 1; day 30 → 3; year 2000 → 2; total 6 → 6. Day energy: 30 → 3.– Wikidata · ASN
51Caspian Airlines Flight 79082009-07-15168Caspian Airlinesmonth 7 → 7; day 15 → 6; year 2009 → 11; total 24 → 6. Day energy: 15 → 6.– Wikidata · ASN
52Mexicana de Aviación Flight 9401986-03-31167Mexicana de Aviaciónmonth 3 → 3; day 31 → 4; year 1986 → 24; total 31 → 4. Day energy: 31 → 4.– Wikidata · ASN
53PIA Flight 2681992-09-28167Pakistan International Airlinesmonth 9 → 9; day 28 → 10; year 1992 → 21; total 40 → 4. Day energy: 28 → 1.– Wikidata · ASN
54Aeroflot Flight 42251980-07-08166Aeroflotmonth 7 → 7; day 8 → 8; year 1980 → 18; total 33 → 33. Day energy: 8 → 8.– Wikidata · ASN
55All Nippon Airways Flight 581971-07-30162All Nippon Airwaysmonth 7 → 7; day 30 → 3; year 1971 → 18; total 28 → 28. Day energy: 30 → 3.– Wikidata · ASN
56AirAsia Flight 85012014-12-28162Indonesia AirAsiamonth 12 → 3; day 28 → 10; year 2014 → 7; total 20 → 11. Day energy: 28 → 1.Yes Wikidata · ASN
57China Northwest Airlines Flight 23031994-06-06160China Northwest Airlinesmonth 6 → 6; day 6 → 6; year 1994 → 23; total 35 → 8. Day energy: 6 → 6.– Wikidata · ASN
58West Caribbean Airways Flight 7082005-08-16160West Caribbean Airwaysmonth 8 → 8; day 16 → 7; year 2005 → 7; total 22 → 22. Day energy: 16 → 7.– Wikidata · ASN
59South African Airways Flight 2951987-11-28159South African Airwaysmonth 11 → 11; day 28 → 10; year 1987 → 25; total 46 → 1. Day energy: 28 → 1.– Wikidata · ASN
60American Airlines Flight 9651995-12-20159American Airlinesmonth 12 → 3; day 20 → 2; year 1995 → 24; total 29 → 11. Day energy: 20 → 11.Yes Wikidata · ASN
61Air India Express Flight 8122010-05-22158Air India Expressmonth 5 → 5; day 22 → 22; year 2010 → 3; total 30 → 3. Day energy: 22 → 22.– Wikidata · ASN
62Libyan Arab Airlines Flight 11031992-12-22157Libyan Airlinesmonth 12 → 3; day 22 → 22; year 1992 → 21; total 46 → 1. Day energy: 22 → 22.– Wikidata · ASN
63Ethiopian Airlines Flight 3022019-03-10157Ethiopian Airlinesmonth 3 → 3; day 10 → 1; year 2019 → 12; total 16 → 7. Day energy: 10 → 1.– Wikidata · ASN
64Interflug Flight 4501972-08-14156Interflugmonth 8 → 8; day 14 → 5; year 1972 → 19; total 32 → 5. Day energy: 14 → 5.– Wikidata · ASN
65Northwest Airlines Flight 2551987-08-16156Northwest Airlinesmonth 8 → 8; day 16 → 7; year 1987 → 25; total 40 → 4. Day energy: 16 → 7.– Wikidata · ASN
66PIA Flight 7401979-11-26156Pakistan International Airlinesmonth 11 → 11; day 26 → 8; year 1979 → 26; total 45 → 9. Day energy: 26 → 8.– Wikidata · ASN
67Spantax Flight 2751972-12-03155Spantaxmonth 12 → 3; day 3 → 3; year 1972 → 19; total 25 → 7. Day energy: 3 → 3.– Wikidata · ASN
68Spanair Flight 50222008-08-20154Spanairmonth 8 → 8; day 20 → 2; year 2008 → 10; total 20 → 11. Day energy: 20 → 11.Yes Wikidata · ASN
69Gol Transportes Aéreos Flight 19072006-09-29154Gol Transportes Aéreos / ExcelAiremonth 9 → 9; day 29 → 11; year 2006 → 8; total 28 → 28. Day energy: 29 → 11.Yes Wikidata · ASN
70Turkish Airlines Flight 4521976-09-19154Turkish Airlinesmonth 9 → 9; day 19 → 10; year 1976 → 23; total 42 → 6. Day energy: 19 → 1.– Wikidata · ASN
71Pan Am Flight 7591982-07-09153Pan Ammonth 7 → 7; day 9 → 9; year 1982 → 20; total 36 → 9. Day energy: 9 → 9.– Wikidata · ASN
72Dana Air Flight 9922012-06-03153Dana Airmonth 6 → 6; day 3 → 3; year 2012 → 5; total 14 → 5. Day energy: 3 → 3.– Wikidata · ASN
73Airblue Flight 2022010-07-28152airbluemonth 7 → 7; day 28 → 10; year 2010 → 3; total 20 → 11. Day energy: 28 → 1.Yes Wikidata · ASN
74Yemenia Flight 6262009-06-30152Yemeniamonth 6 → 6; day 30 → 3; year 2009 → 11; total 20 → 11. Day energy: 30 → 3.Yes Wikidata · ASN
75Germanwings Flight 95252015-03-24149Germanwingsmonth 3 → 3; day 24 → 6; year 2015 → 8; total 17 → 8. Day energy: 24 → 6.– Wikidata · ASN
76Iberia Airlines Flight 6101985-02-19148Iberiamonth 2 → 2; day 19 → 10; year 1985 → 23; total 35 → 8. Day energy: 19 → 1.– Wikidata · ASN
77Flash Airlines Flight 6042004-01-03148Flash Airlinesmonth 1 → 1; day 3 → 3; year 2004 → 6; total 10 → 1. Day energy: 3 → 3.– Wikidata · ASN
78Dan-Air Flight 10081980-04-25146Dan-Airmonth 4 → 4; day 25 → 7; year 1980 → 18; total 29 → 11. Day energy: 25 → 7.Yes Wikidata · ASN
79Vladivostok Air Flight 3522001-07-04145Vladivostok Airmonth 7 → 7; day 4 → 4; year 2001 → 3; total 14 → 5. Day energy: 4 → 4.– Wikidata · ASN
80ADC Airlines Flight 861996-11-07144ADC Airlinesmonth 11 → 11; day 7 → 7; year 1996 → 25; total 43 → 7. Day energy: 7 → 7.– Wikidata · ASN
81Pacific Southwest Airlines Flight 1821978-09-25144Pacific Southwest Airlinesmonth 9 → 9; day 25 → 7; year 1978 → 25; total 41 → 5. Day energy: 25 → 7.– Wikidata · ASN
82Independent Air Flight 18511989-02-08144Independent Airmonth 2 → 2; day 8 → 8; year 1989 → 27; total 37 → 1. Day energy: 8 → 8.– Wikidata · ASN
83Avianca Flight 4101988-03-17143Aviancamonth 3 → 3; day 17 → 8; year 1988 → 26; total 37 → 1. Day energy: 17 → 8.– Wikidata · ASN
84Gulf Air Flight 0722000-08-23143Gulf Airmonth 8 → 8; day 23 → 5; year 2000 → 2; total 15 → 6. Day energy: 23 → 5.– Wikidata · ASN
85China Southern Airlines Flight 39431992-11-24141China Southern Airlinesmonth 11 → 11; day 24 → 6; year 1992 → 21; total 38 → 11. Day energy: 24 → 6.Yes Wikidata · ASN
86Vnukovo Airlines Flight 28011996-08-29141Vnukovo Airlinesmonth 8 → 8; day 29 → 11; year 1996 → 25; total 44 → 8. Day energy: 29 → 11.Yes Wikidata · ASN
87UTAGE Flight 1412003-12-25141Union des Transports Aériens de Guinéemonth 12 → 3; day 25 → 7; year 2003 → 5; total 15 → 6. Day energy: 25 → 7.– Wikidata · ASN
88Caungula air disaster1995-12-18141Trans Service Airliftmonth 12 → 3; day 18 → 9; year 1995 → 24; total 36 → 9. Day energy: 18 → 9.– Wikidata · ASN
89Delta Air Lines Flight 1911985-08-02137Delta Air Linesmonth 8 → 8; day 2 → 2; year 1985 → 23; total 33 → 33. Day energy: 2 → 2.– Wikidata · ASN
90VASP Flight 1681982-06-08137VASPmonth 6 → 6; day 8 → 8; year 1982 → 20; total 34 → 7. Day energy: 8 → 8.– Wikidata · ASN
911960 New York air disaster1960-12-16134United Airlinesmonth 12 → 3; day 16 → 7; year 1960 → 16; total 26 → 8. Day energy: 16 → 7.– Wikidata · ASN
92All Nippon Airways Flight 601966-02-04133All Nippon Airwaysmonth 2 → 2; day 4 → 4; year 1966 → 22; total 28 → 28. Day energy: 4 → 4.– Wikidata · ASN
93Indian Airlines Flight 1131988-10-19133Indian Airlinesmonth 10 → 1; day 19 → 10; year 1988 → 26; total 37 → 1. Day energy: 19 → 1.– Wikidata · ASN
941993 Tehran mid-air collision1993-02-08133Iran Airtourmonth 2 → 2; day 8 → 8; year 1993 → 22; total 32 → 5. Day energy: 8 → 8.– Wikidata · ASN
95Aeroflot Flight 86411982-06-28132Aeroflotmonth 6 → 6; day 28 → 10; year 1982 → 20; total 36 → 9. Day energy: 28 → 1.– Wikidata · ASN
96USAir Flight 4271994-09-08132US Airwaysmonth 9 → 9; day 8 → 8; year 1994 → 23; total 40 → 4. Day energy: 8 → 8.– Wikidata · ASN
97China Eastern Airlines Flight 57352022-03-21132China Eastern Airlinesmonth 3 → 3; day 21 → 3; year 2022 → 6; total 12 → 3. Day energy: 21 → 3.– Wikidata · ASN
98SAM Colombia Flight 5011993-05-19132SAM Colombiamonth 5 → 5; day 19 → 10; year 1993 → 22; total 37 → 1. Day energy: 19 → 1.– Wikidata · ASN
99Air Philippines Flight 5412000-04-19131Airphil Expressmonth 4 → 4; day 19 → 10; year 2000 → 2; total 16 → 7. Day energy: 19 → 1.– Wikidata · ASN
100TAP Portugal Flight 4251977-11-19131TAP Air Portugalmonth 11 → 11; day 19 → 10; year 1977 → 24; total 45 → 9. Day energy: 19 → 1.– Wikidata · ASN
101Tan-Sahsa Flight 4141989-10-21131SAHSAmonth 10 → 1; day 21 → 3; year 1989 → 27; total 31 → 4. Day energy: 21 → 3.– Wikidata · ASN
102Air France Flight 0071962-06-03130Air Francemonth 6 → 6; day 3 → 3; year 1962 → 18; total 27 → 9. Day energy: 3 → 3.– Wikidata · ASN
1031983 TAAG Angola Airlines 737 Boeing crash1983-11-08130TAAG Angola Airlinesmonth 11 → 11; day 8 → 8; year 1983 → 21; total 40 → 4. Day energy: 8 → 8.– Wikidata · ASN
104Air China Flight 1292002-04-15129Air Chinamonth 4 → 4; day 15 → 6; year 2002 → 4; total 14 → 5. Day energy: 15 → 6.– Wikidata · ASN
105Iran Air Flight 2911980-01-21128Iran Airmonth 1 → 1; day 21 → 3; year 1980 → 18; total 22 → 22. Day energy: 21 → 3.– Wikidata · ASN
1061990 Guangzhou Baiyun airport collisions1990-10-02128Xiamen Airlines / China Southern Airlines / China Southwest Airlinesmonth 10 → 1; day 2 → 2; year 1990 → 19; total 22 → 22. Day energy: 2 → 2.– Wikidata · ASN
1071956 Grand Canyon mid-air collision1956-06-30128United Airlinesmonth 6 → 6; day 30 → 3; year 1956 → 21; total 30 → 3. Day energy: 30 → 3.– Wikidata · ASN
108Bhoja Air Flight 2132012-04-20127Bhoja Airmonth 4 → 4; day 20 → 2; year 2012 → 5; total 11 → 11. Day energy: 20 → 11.Yes Wikidata · ASN
109ČSA Flight 5401975-08-20126Czech Airlinesmonth 8 → 8; day 20 → 2; year 1975 → 22; total 32 → 5. Day energy: 20 → 11.Yes Wikidata · ASN
110Cubana de Aviación Flight 96461989-09-03126Cubana de Aviaciónmonth 9 → 9; day 3 → 3; year 1989 → 27; total 39 → 3. Day energy: 3 → 3.– Wikidata · ASN
1111967 Nicosia Britannia disaster1967-04-20126Globe Airmonth 4 → 4; day 20 → 2; year 1967 → 23; total 29 → 11. Day energy: 20 → 11.Yes Wikidata · ASN
112Ethiopian Airlines Flight 9611996-11-23125Ethiopian Airlinesmonth 11 → 11; day 23 → 5; year 1996 → 25; total 41 → 5. Day energy: 23 → 5.– Wikidata · ASN
113S7 Airlines Flight 7782006-07-09125S7 Airlinesmonth 7 → 7; day 9 → 9; year 2006 → 8; total 24 → 6. Day energy: 9 → 9.– Wikidata · ASN
114Baikal Airlines Flight 1301994-01-03124Baikal Airlinesmonth 1 → 1; day 3 → 3; year 1994 → 23; total 27 → 9. Day energy: 3 → 3.– Wikidata · ASN
115BOAC Flight 9111966-03-05124British Overseas Airways Corporationmonth 3 → 3; day 5 → 5; year 1966 → 22; total 30 → 3. Day energy: 5 → 5.– Wikidata · ASN
116Faucett Flight 2511996-02-29123Faucett Perúmonth 2 → 2; day 29 → 11; year 1996 → 25; total 38 → 11. Day energy: 29 → 11.Yes Wikidata · ASN
117South African Airways Flight 2281968-04-20123South African Airwaysmonth 4 → 4; day 20 → 2; year 1968 → 24; total 30 → 3. Day energy: 20 → 11.Yes Wikidata · ASN
118Varig Flight 8201973-07-11123Varigmonth 7 → 7; day 11 → 11; year 1973 → 20; total 38 → 11. Day energy: 11 → 11.Yes Wikidata · ASN
119Aeroflot Flight 9641973-10-13122Aeroflotmonth 10 → 1; day 13 → 4; year 1973 → 20; total 25 → 7. Day energy: 13 → 4.– Wikidata · ASN
120Aeroflot Flight 14911972-05-18122Aeroflotmonth 5 → 5; day 18 → 9; year 1972 → 19; total 33 → 33. Day energy: 18 → 9.– Wikidata · ASN
121Pakistan International Airlines Flight 7051965-05-20121Pakistan International Airlinesmonth 5 → 5; day 20 → 2; year 1965 → 21; total 28 → 28. Day energy: 20 → 11.Yes Wikidata · ASN
122Helios Airways Flight 5222005-08-14121Helios Airwaysmonth 8 → 8; day 14 → 5; year 2005 → 7; total 20 → 11. Day energy: 14 → 5.Yes Wikidata · ASN
1231969 Yukhnov mid-air collision1969-06-23120Aeroflotmonth 6 → 6; day 23 → 5; year 1969 → 25; total 36 → 9. Day energy: 23 → 5.– Wikidata · ASN
1241983 TAME 737-200 crash1983-07-11119TAMEmonth 7 → 7; day 11 → 11; year 1983 → 21; total 39 → 3. Day energy: 11 → 11.Yes Wikidata · ASN
125Iran Air Tours Flight 9562002-02-12119Iran Airtourmonth 2 → 2; day 12 → 3; year 2002 → 4; total 9 → 9. Day energy: 12 → 3.– Wikidata · ASN
126Trans-Canada Air Lines Flight 8311963-11-29118Air Canadamonth 11 → 11; day 29 → 11; year 1963 → 19; total 41 → 5. Day energy: 29 → 11.Yes Wikidata · ASN
1272001 Linate Airport runway collision2001-10-08118Scandinavian Airlinesmonth 10 → 1; day 8 → 8; year 2001 → 3; total 12 → 3. Day energy: 8 → 8.– Wikidata · ASN
128British European Airways Flight 5481972-06-18118British European Airwaysmonth 6 → 6; day 18 → 9; year 1972 → 19; total 34 → 7. Day energy: 18 → 9.– Wikidata · ASN
129Air India Flight 1011966-01-24117Air Indiamonth 1 → 1; day 24 → 6; year 1966 → 22; total 29 → 11. Day energy: 24 → 6.Yes Wikidata · ASN
130Bellview Airlines Flight 2102005-10-22117Bellview Airlinesmonth 10 → 1; day 22 → 22; year 2005 → 7; total 30 → 3. Day energy: 22 → 22.– Wikidata · ASN
131Sudan Airways Flight 1392003-07-08117Sudan Airwaysmonth 7 → 7; day 8 → 8; year 2003 → 5; total 20 → 11. Day energy: 8 → 8.Yes Wikidata · ASN
132Avioimpex Flight 1101993-11-20116Avioimpexmonth 11 → 11; day 20 → 2; year 1993 → 22; total 35 → 8. Day energy: 20 → 11.Yes Wikidata · ASN
133Air Algérie Flight 50172014-07-24116Swiftairmonth 7 → 7; day 24 → 6; year 2014 → 7; total 20 → 11. Day energy: 24 → 6.Yes Wikidata · ASN
134Korean Air Flight 8581987-11-29115Korean Airmonth 11 → 11; day 29 → 11; year 1987 → 25; total 47 → 11. Day energy: 29 → 11.Yes Wikidata · ASN
135Alitalia Flight 1121972-05-05115Alitaliamonth 5 → 5; day 5 → 5; year 1972 → 19; total 29 → 11. Day energy: 5 → 5.Yes Wikidata · ASN
136Kenya Airways Flight 5072007-05-05114Kenya Airwaysmonth 5 → 5; day 5 → 5; year 2007 → 9; total 19 → 1. Day energy: 5 → 5.– Wikidata · ASN
137Air France Flight 1171962-06-22113Air Francemonth 6 → 6; day 22 → 22; year 1962 → 18; total 46 → 1. Day energy: 22 → 22.– Wikidata · ASN
138Air France Flight 45902000-07-25113Air Francemonth 7 → 7; day 25 → 7; year 2000 → 2; total 16 → 7. Day energy: 25 → 7.– Wikidata · ASN
139Thai Airways International Flight 3111992-07-31113Thai Airwaysmonth 7 → 7; day 31 → 4; year 1992 → 21; total 32 → 5. Day energy: 31 → 4.– Wikidata · ASN
140Armavia Flight 9672006-05-03113Armaviamonth 5 → 5; day 3 → 3; year 2006 → 8; total 16 → 7. Day energy: 3 → 3.– Wikidata · ASN
141Eastern Air Lines Flight 661975-06-24113Eastern Air Linesmonth 6 → 6; day 24 → 6; year 1975 → 22; total 34 → 7. Day energy: 24 → 6.– Wikidata · ASN
142Gulf Air Flight 7711983-09-23112Gulf Airmonth 9 → 9; day 23 → 5; year 1983 → 21; total 35 → 8. Day energy: 23 → 5.– Wikidata · ASN
143Sterling Airways Flight 2961972-03-14112Sterling Airlinesmonth 3 → 3; day 14 → 5; year 1972 → 19; total 27 → 9. Day energy: 14 → 5.– Wikidata · ASN
144Dan-Air Flight 19031970-07-03112Dan-Airmonth 7 → 7; day 3 → 3; year 1970 → 17; total 27 → 9. Day energy: 3 → 3.– Wikidata · ASN
145China Northern Airlines Flight 61362002-05-07112China Northern Airlinesmonth 5 → 5; day 7 → 7; year 2002 → 4; total 16 → 7. Day energy: 7 → 7.– Wikidata · ASN
146CAAC Flight 33031982-04-26112CAAC Airlinesmonth 4 → 4; day 26 → 8; year 1982 → 20; total 32 → 5. Day energy: 26 → 8.– Wikidata · ASN
147Cubana de Aviación Flight 9722018-05-18112Cubana de Aviaciónmonth 5 → 5; day 18 → 9; year 2018 → 11; total 25 → 7. Day energy: 18 → 9.– Wikidata · ASN
148Aeroflot Flight 9091976-03-06111Aeroflotmonth 3 → 3; day 6 → 6; year 1976 → 23; total 32 → 5. Day energy: 6 → 6.– Wikidata · ASN
149United Airlines Flight 2321989-07-19111United Airlinesmonth 7 → 7; day 19 → 10; year 1989 → 27; total 44 → 8. Day energy: 19 → 1.– Wikidata · ASN
150Alaska Airlines Flight 18661971-09-04111Alaska Airlinesmonth 9 → 9; day 4 → 4; year 1971 → 18; total 31 → 4. Day energy: 4 → 4.– Wikidata · ASN
1511966 Flying Tiger Line Canadair CL-44 crash1966-12-24111Flying Tiger Linemonth 12 → 3; day 24 → 6; year 1966 → 22; total 31 → 4. Day energy: 24 → 6.– Wikidata · ASN
152Caledonian Airways Flight 1531962-03-04111Caledonian Airwaysmonth 3 → 3; day 4 → 4; year 1962 → 18; total 25 → 7. Day energy: 4 → 4.– Wikidata · ASN
153Aeroflot Flight 35191984-12-23110Aeroflotmonth 12 → 3; day 23 → 5; year 1984 → 22; total 30 → 3. Day energy: 23 → 5.– Wikidata · ASN
154Far Eastern Air Transport Flight 1031981-08-22110Far Eastern Air Transportmonth 8 → 8; day 22 → 22; year 1981 → 19; total 49 → 4. Day energy: 22 → 22.– Wikidata · ASN
155ValuJet Flight 5921996-05-11110ValuJet Airlinesmonth 5 → 5; day 11 → 11; year 1996 → 25; total 41 → 5. Day energy: 11 → 11.Yes Wikidata · ASN
156Aeroflot Flight 10361972-10-01109Aeroflotmonth 10 → 1; day 1 → 1; year 1972 → 19; total 21 → 3. Day energy: 1 → 1.– Wikidata · ASN
1571974 Leningrad Aeroflot Il-18 crash1974-04-27109Aeroflotmonth 4 → 4; day 27 → 9; year 1974 → 21; total 34 → 7. Day energy: 27 → 9.– Wikidata · ASN
158Air Canada Flight 6211970-07-05109Air Canadamonth 7 → 7; day 5 → 5; year 1970 → 17; total 29 → 11. Day energy: 5 → 5.Yes Wikidata · ASN
159Aeroflot Flight 39321973-09-30108Aeroflotmonth 9 → 9; day 30 → 3; year 1973 → 20; total 32 → 5. Day energy: 30 → 3.– Wikidata · ASN
160Alitalia Flight 41281978-12-23108Alitaliamonth 12 → 3; day 23 → 5; year 1978 → 25; total 33 → 33. Day energy: 23 → 5.– Wikidata · ASN
161Libyan Arab Airlines Flight 1141973-02-21108Libyan Airlinesmonth 2 → 2; day 21 → 3; year 1973 → 20; total 25 → 7. Day energy: 21 → 3.– Wikidata · ASN
162Invicta International Airlines Flight 4351973-04-10108Invicta International Airlinesmonth 4 → 4; day 10 → 1; year 1973 → 20; total 25 → 7. Day energy: 10 → 1.– Wikidata · ASN
163China Southwest Airlines Flight 41461988-01-18108China Southwest Airlinesmonth 1 → 1; day 18 → 9; year 1988 → 26; total 36 → 9. Day energy: 18 → 9.– Wikidata · ASN
164China General Aviation Flight 75521992-07-31108China General Aviationmonth 7 → 7; day 31 → 4; year 1992 → 21; total 32 → 5. Day energy: 31 → 4.– Wikidata · ASN
165Aeroflot Flight 22301967-11-16107Aeroflotmonth 11 → 11; day 16 → 7; year 1967 → 23; total 41 → 5. Day energy: 16 → 7.– Wikidata · ASN
166Flying Tiger Line Flight 7391962-03-16107Flying Tiger Linemonth 3 → 3; day 16 → 7; year 1962 → 18; total 28 → 28. Day energy: 16 → 7.– Wikidata · ASN
167Pan Am Flight 8121974-04-22107Pan Ammonth 4 → 4; day 22 → 22; year 1974 → 21; total 47 → 11. Day energy: 22 → 22.Yes Wikidata · ASN
168Avianca Flight 2031989-11-27107Aviancamonth 11 → 11; day 27 → 9; year 1989 → 27; total 47 → 11. Day energy: 27 → 9.Yes Wikidata · ASN
169Sosoliso Airlines Flight 11452005-12-10107Sosoliso Airlinesmonth 12 → 3; day 10 → 1; year 2005 → 7; total 11 → 11. Day energy: 10 → 1.Yes Wikidata · ASN
170Accidente de un Sud Aviation Caravelle de Royal Air Maroc en 19731973-12-22106Royal Air Marocmonth 12 → 3; day 22 → 22; year 1973 → 20; total 45 → 9. Day energy: 22 → 22.– Wikidata · ASN
171SilkAir Flight 1851997-12-19104SilkAirmonth 12 → 3; day 19 → 10; year 1997 → 26; total 39 → 3. Day energy: 19 → 1.– Wikidata · ASN
172Iberia Airlines Flight 6021972-01-07104Iberiamonth 1 → 1; day 7 → 7; year 1972 → 19; total 27 → 9. Day energy: 7 → 7.– Wikidata · ASN
173Kam Air Flight 9042005-02-03104Kam Airmonth 2 → 2; day 3 → 3; year 2005 → 7; total 12 → 3. Day energy: 3 → 3.– Wikidata · ASN
174Cebu Pacific Flight 3871998-02-02104Cebu Pacificmonth 2 → 2; day 2 → 2; year 1998 → 27; total 31 → 4. Day energy: 2 → 2.– Wikidata · ASN
1751963 Ankara mid-air collision1963-02-01104Middle East Airlines - Air Libanmonth 2 → 2; day 1 → 1; year 1963 → 19; total 22 → 22. Day energy: 1 → 1.– Wikidata
176Afriqiyah Airways Flight 7712010-05-12103Afriqiyah Airwaysmonth 5 → 5; day 12 → 3; year 2010 → 3; total 11 → 11. Day energy: 12 → 3.Yes Wikidata · ASN
177Aeroflot Flight 5581972-08-31102Aeroflotmonth 8 → 8; day 31 → 4; year 1972 → 19; total 31 → 4. Day energy: 31 → 4.– Wikidata · ASN
178Air Algérie Flight 62892003-03-06102Air Algériemonth 3 → 3; day 6 → 6; year 2003 → 5; total 14 → 5. Day energy: 6 → 6.– Wikidata · ASN
179Adam Air Flight 5742007-01-01102Adam Airmonth 1 → 1; day 1 → 1; year 2007 → 9; total 11 → 11. Day energy: 1 → 1.Yes Wikidata · ASN
180Dominicana DC-9 air disaster1970-02-15102Dominicana de Aviaciónmonth 2 → 2; day 15 → 6; year 1970 → 17; total 25 → 7. Day energy: 15 → 6.– Wikidata · ASN
181Northwest Orient Airlines Flight 2931963-06-03101Northwest Airlinesmonth 6 → 6; day 3 → 3; year 1963 → 19; total 28 → 28. Day energy: 3 → 3.– Wikidata · ASN
182Thai Airways International Flight 2611998-12-11101Thai Airwaysmonth 12 → 3; day 11 → 11; year 1998 → 27; total 41 → 5. Day energy: 11 → 11.Yes Wikidata · ASN
183Eastern Air Lines Flight 4011972-12-29101Eastern Air Linesmonth 12 → 3; day 29 → 11; year 1972 → 19; total 33 → 33. Day energy: 29 → 11.Yes Wikidata · ASN
1841969 Aswan Ilyushin Il-18 crash1969-03-20100EgyptAirmonth 3 → 3; day 20 → 2; year 1969 → 25; total 30 → 3. Day energy: 20 → 11.Yes Wikidata · ASN
185Malaysian Airline System Flight 6531977-12-04100Malaysia Airlinesmonth 12 → 3; day 4 → 4; year 1977 → 24; total 31 → 4. Day energy: 4 → 4.– Wikidata · ASN
186Mandala Airlines Flight 0912005-09-05100Mandala Airlinesmonth 9 → 9; day 5 → 5; year 2005 → 7; total 21 → 3. Day energy: 5 → 5.– Wikidata · ASN
187Aeroflot Flight 36031981-11-1799Aeroflotmonth 11 → 11; day 17 → 8; year 1981 → 19; total 38 → 11. Day energy: 17 → 8.Yes Wikidata · ASN
188KLM Flight 607-E1958-08-1499KLMmonth 8 → 8; day 14 → 5; year 1958 → 23; total 36 → 9. Day energy: 14 → 5.– Wikidata · ASN
189TAM Transportes Aéreos Regionais Flight 4021996-10-3199LATAM Brasilmonth 10 → 1; day 31 → 4; year 1996 → 25; total 30 → 3. Day energy: 31 → 4.– Wikidata · ASN
190LANSA Flight 5021970-08-0999LANSAmonth 8 → 8; day 9 → 9; year 1970 → 17; total 34 → 7. Day energy: 9 → 9.– Wikidata · ASN
191Pakistan International Airlines Flight 83032020-05-2298Pakistan International Airlinesmonth 5 → 5; day 22 → 22; year 2020 → 4; total 31 → 4. Day energy: 22 → 22.– Wikidata · ASN
192Khabarovsk United Air Group Flight 39491995-12-0698Dalaviamonth 12 → 3; day 6 → 6; year 1995 → 24; total 33 → 33. Day energy: 6 → 6.– Wikidata · ASN
193Britannia Airways Flight 1051966-09-0198Bristol Britanniamonth 9 → 9; day 1 → 1; year 1966 → 22; total 32 → 5. Day energy: 1 → 1.– Wikidata · ASN
194Aeroflot Flight 19121971-07-2597Aeroflotmonth 7 → 7; day 25 → 7; year 1971 → 18; total 32 → 5. Day energy: 25 → 7.– Wikidata · ASN
195Pan Am Flight 8061974-01-3097Pan Ammonth 1 → 1; day 30 → 3; year 1974 → 21; total 25 → 7. Day energy: 30 → 3.– Wikidata · ASN
196Varig Flight 8101962-11-2797Varigmonth 11 → 11; day 27 → 9; year 1962 → 18; total 38 → 11. Day energy: 27 → 9.Yes Wikidata · ASN
197ADC Airlines Flight 532006-10-2996ADC Airlinesmonth 10 → 1; day 29 → 11; year 2006 → 8; total 20 → 11. Day energy: 29 → 11.Yes Wikidata · ASN
198Air France Flight 16111968-09-1195Air Francemonth 9 → 9; day 11 → 11; year 1968 → 24; total 44 → 8. Day energy: 11 → 11.Yes Wikidata · ASN
199American Airlines Flight 11962-03-0195American Airlinesmonth 3 → 3; day 1 → 1; year 1962 → 18; total 22 → 22. Day energy: 1 → 1.– Wikidata · ASN
200Indian Airlines Flight 1711976-10-1295Indian Airlinesmonth 10 → 1; day 12 → 3; year 1976 → 23; total 27 → 9. Day energy: 12 → 3.– Wikidata · ASN
Calendar baseline: how often each energy falls on a date, 1950–2025
EnergyDay energyFull dateEither
113.1%7.2%19.3%
312.9%11.1%22.5%
48.5%8.6%16.3%
59.9%11.1%19.9%
69.9%6.5%15.8%
79.9%11.1%19.8%
89.9%11.1%19.8%
99.9%11.1%19.9%
119.7%11.1%19.7%
223.3%2.6%5.8%
330.0%4.6%4.6%

Source The data

  • Fatal airline incidents: Wikidata records of aviation occurrences with an Aviation Safety Network ID or an airline operator, 1950–2025 (1,286 after excluding military, cargo, corporate and undated records; 213 excluded). Open data covers large disasters well and small accidents only in part. Retrieved 2026-09-28.
  • Technical failures: National Transportation Safety Board aviation database (data.ntsb.gov/avdata), 93,097 US events 1982–2025, classified from NTSB’s own cause findings. Mostly general aviation; 685 technical failures are airline operations.
  • Calendar shares are matched to each incident’s year (and, for NTSB events, its month and weekday), because how often a full date reduces to a number depends on the year.
  • Energies from CUE’s own engine. Downloads: fatal incidents · 200 deadliest · technical failures · calendar baseline · exclusion log · sources.

Reproduce it: scripts/fetch-study-sources.mts, scripts/extract-ntsb-technical.py and the scripts/build-aviation-11*.mts and build-technology-11-study.mts builds in CUE’s code repository.