| 2017-12-30 | 🇪🇸Alicante, Spain | Bell 412SP | 1 | fatal | Unknown | NTSB |
| 2017-12-21 | 🇪🇬Al-Arish Military Airport, Egypt | Sikorsky S-70A Desert Hawk | - | unknown | Hostile action | Al Masdar |
| 2017-12-21 | 🇿🇦Bredasdorp, South Africa | Bell UH-1H | - | unknown | Unknown | NTSB |
| 2017-12-19 | 🇫🇮Helsinki-Malmi Airport, Finland | Schweizer 269C | - | minor | Unknown | Lentoposti |
| 2017-12-17 | 🇺🇸Caldwell, United States | RotorWay EXEC | - | unknown | Mechanical failure | NTSB CAROL |
| 2017-12-15 | 🇺🇸Islamorada, United States | Sikorsky S-76 | - | unknown | Fire | NTSB CAROL |
| 2017-12-13 | 🇺🇸Newark, United States | Robinson R44 | - | minor | Pilot error | NTSB CAROL |
| 2017-12-06 | 🇺🇸Santa Rosa, United States | Eurocopter AS350 | - | unknown | Pilot error | NTSB CAROL |
| 2017-12-05 | 🇺🇸Fort Pierce, United States | Robinson R44 | - | minor | Pilot error | NTSB CAROL |
| 2017-12-05 | 🇷🇺Dubovaya Balka, Russia | Robinson R44 | 2 | fatal | Under investigation | NTSB |
| 2017-12-02 | 🇵🇭Bacoor, Philippines | Enstrom 480 | - | minor | Unknown | NTSB |
| 2017-11-30 | 🇺🇸Truckee, United States | Robinson R22 | - | serious | Pilot error | NTSB CAROL |
| 2017-11-29 | 🇺🇸New Orleans, United States | Robinson R44 | - | unknown | Pilot error | NTSB CAROL |
| 2017-11-29 | 🇷🇴Muntele Mic, near Caransebeș, Romania | Eurocopter AS350B3 | - | minor | Weather | Aerossurance |
| 2017-11-27 | 🇬🇧Sywell Aerodrome, Northamptonshire, United Kingdom | Leonardo AW109SP Grand New | - | serious | Mechanical failure | AAIB |
| 2017-11-22 | 🇺🇸Woodlawn, United States | Schweizer 300 | - | unknown | Mechanical failure | NTSB CAROL |
| 2017-11-22 | 🇲🇽La Morita, Mexico | Hughes 369HS | 2 | fatal | Unknown | NTSB |
| 2017-11-20 | 🇺🇸Electra, United States | Robinson R22 Beta | 1 | fatal | Wire strike | NTSB CAROL |
| 2017-11-19 | 🇺🇸Stuttgart, United States | Bell 407 | 3 | fatal | Unknown | NTSB |
| 2017-11-18 | 🇦🇺Emerald Aerodrome, Australia | Bell 206B | - | minor | Unknown | NTSB |
| 2017-11-17 | 🇬🇧Near Waddesdon, Buckinghamshire, United Kingdom | Guimbal Cabri G2 | - | unknown | Pilot error | AAIB |
| 2017-11-11 | 🇺🇸Page, United States | Robinson R44 | - | minor | Pilot error | NTSB CAROL |
| 2017-11-08 | 🇺🇸Union City, United States | Bell 206 | - | minor | Pilot error | NTSB CAROL |
| 2017-11-07 | 🇺🇸Rolling Fork, United States | Bell 206 | - | minor | Mechanical failure | NTSB CAROL |
| 2017-11-07 | 🇺🇸Sulphur, United States | Hughes 369D | 2 | fatal | Pilot error | NTSB CAROL |
| 2017-11-06 | 🇺🇸Larchwood, United States | Robinson R44 | - | serious | Wire strike | NTSB CAROL |
| 2017-11-06 | 🇷🇺Krasny Pakhar village, Russia | Bell 407 | - | unknown | Unknown | NTSB |
| 2017-11-05 | 🇸🇦Asir Region, Saudi Arabia | Sikorsky S-70 | 8 | fatal | Under investigation | Al Arabiya |
| 2017-10-27 | 🇦🇫Kharwar district, Afghanistan | Boeing MH-47G Chinook | 1 | fatal | Unknown | Stars and St |
| 2017-10-26 | 🇬🇧Salterford Farm, Nottinghamshire, United Kingdom | RotorWay Executive 162F | - | serious | Pilot error | AAIB |
| 2017-10-26 | 🇺🇸La Paloma, United States | Eurocopter EC130 | - | unknown | Mechanical failure | NTSB CAROL |
| 2017-10-24 | 🇺🇸Arlington, United States | Robinson R22 | 1 | fatal | Pilot error | NTSB CAROL |
| 2017-10-24 | 🇺🇸Groom, United States | Bell 206B | - | unknown | Pilot error | NTSB CAROL |
| 2017-10-21 | 🇰🇪Lake Nakuru, Kenya | Airbus Helicopters H125 | 5 | fatal | Pilot error | Kenya AAID |
| 2017-10-16 | 🇺🇸Molokai, United States | Robinson R44 | 2 | fatal | Unknown | NTSB CAROL |
| 2017-10-16 | 🇺🇸Molokai, United States | Robinson R44 | 2 | fatal | Weather | NTSB |
| 2017-10-13 | 🇺🇸Canton, United States | Eurocopter BK117 | - | unknown | Wire strike | NTSB |
| 2017-10-13 | 🇺🇸Arbuckle, United States | Bell UH-1H | - | unknown | Mechanical failure | NTSB CAROL |
| 2017-10-12 | 🇺🇸Canton, United States | Eurocopter BK117 | - | unknown | Pilot error | NTSB CAROL |
| 2017-10-08 | 🇧🇪Namur, Belgium | Robinson R44 | - | unknown | Unknown | NTSB |
| 2017-10-08 | 🇱🇻Gramzda, Latvia | Robinson R44 | 1 | fatal | Unknown | NTSB |
| 2017-10-06 | 🇺🇸Las Vegas, United States | Robinson R22 Beta | - | unknown | Pilot error | NTSB CAROL |
| 2017-10-01 | 🇨🇦Campbell River, Canada | Robinson R44 | 1 | fatal | Unknown | NTSB |
| 2017-10-01 | 🇺🇸Midland, United States | Brantly B-2B | 1 | fatal | Pilot error | NTSB CAROL |
| 2017-09-28 | 🇸🇾Syria | Bell-Boeing MV-22B Osprey | - | serious | Unknown | USNI News |
| 2017-09-28 | 🇿🇦Cape Town, South Africa | Robinson R44 | 1 | fatal | Unknown | NTSB |
| 2017-09-27 | 🇺🇸Fullerton, United States | Eurocopter AS350 | - | minor | Pilot error | NTSB CAROL |
| 2017-09-26 | 🇺🇸Orange, United States | VANS RV 8 | - | minor | Pilot error | NTSB CAROL |
| 2017-09-26 | 🇸🇪Norrbotten, Sweden | Hughes 369 | 1 | fatal | Unknown | NTSB |
| 2017-09-25 | 🇭🇺Őrbottyán, Hungary | Eurocopter EC135T2 | - | minor | Wire strike | TSB Hungary |
| 2017-09-25 | 🇺🇸Odessa, United States | Composite FX MOSQUITO XE 285 | - | minor | Mechanical failure | NTSB CAROL |
| 2017-09-24 | 🇺🇸Santa Barbara, United States | Robinson R22 | - | unknown | Pilot error | NTSB CAROL |
| 2017-09-24 | 🇬🇹Santa Lucía Cotzumalguapa, Guatemala | Bell 206B III | - | serious | Pilot error | SVIA |
| 2017-09-23 | 🇺🇸Clearwater, United States | Robinson R22 | - | unknown | Midair collision | NTSB |
| 2017-09-21 | 🇺🇸Hoffman Island, United States | Sikorsky UH-60 | - | unknown | Pilot error | NTSB CAROL |
| 2017-09-21 | 🇺🇸Fayetteville, United States | Canadian Home Rotors Safari | - | unknown | Pilot error | NTSB CAROL |
| 2017-09-21 | 🇺🇸Hoffman Island, United States | Sikorsky UH-60 | - | minor | Midair collision | NTSB |
| 2017-09-20 | 🇺🇸Long Beach, United States | Robinson R22 | - | serious | Pilot error | NTSB CAROL |
| 2017-09-18 | 🇨🇷Llano Bonito de Pococí, Costa Rica | Bell 47G | 1 | fatal | Unknown | NTSB |
| 2017-09-17 | 🇺🇸Salinas, United States | Bell 47G-5 | - | minor | Wire strike | NTSB CAROL |
| 2017-09-16 | 🇺🇸Ancho, United States | Bell 206L-3 | 1 | fatal | Weather | NTSB CAROL |
| 2017-09-16 | 🇺🇸Plymouth, United States | RotorWay Exec 162F | - | unknown | Mechanical failure | NTSB CAROL |
| 2017-09-14 | 🇾🇪Shabwa, Yemen | - | 4 | fatal | Mechanical failure | Gulf News |
| 2017-09-11 | 🇺🇸Griffith, United States | Hiller UH-12A | - | unknown | Mechanical failure | NTSB CAROL |
| 2017-09-08 | 🇺🇸Medford, United States | Schweizer 269C | 2 | fatal | Pilot error | NTSB CAROL |
| 2017-09-08 | 🇺🇸Hertford, United States | Eurocopter BK117 | 4 | fatal | Pilot error | NTSB CAROL |
| 2017-09-02 | 🇺🇸Tujunga, United States | Leonardo AW139 | - | unknown | Pilot error | NTSB CAROL |
| 2017-09-02 | 🇺🇸Burnet, United States | Hughes 369A | - | serious | Pilot error | NTSB CAROL |
| 2017-09-01 | 🇺🇸Lawrenceville, United States | Hughes 369 | - | serious | Mechanical failure | NTSB CAROL |
| 2017-08-29 | 🇺🇸Sacramento, United States | Robinson R22 | - | unknown | Pilot error | NTSB CAROL |
| 2017-08-28 | 🇮🇱Herzelia, Israel | Schweizer 300C | - | unknown | Under investigation | NTSB |
| 2017-08-25 | 🇺🇸El Dorado Hills, United States | Robinson R44 II | - | minor | Pilot error | NTSB CAROL |
| 2017-08-25 | 🇺🇸El Dorado Hills, United States | Robinson R44 II | - | unknown | Mechanical failure | NTSB |
| 2017-08-24 | 🇺🇸Bremerton, United States | Robinson R22 | - | unknown | Pilot error | NTSB CAROL |
| 2017-08-23 | 🇿🇼Hwange, Zimbabwe | Bell 206B III | - | minor | Unknown | ZimNews |
| 2017-08-22 | 🇺🇸Glendale, United States | Enstrom F-28F | - | unknown | Mechanical failure | NTSB CAROL |
| 2017-08-20 | 🇺🇸Minden, United States | Bell 206 | - | unknown | Pilot error | NTSB CAROL |
| 2017-08-20 | 🇺🇸St Marys, United States | Bell 47G | - | unknown | Pilot error | NTSB CAROL |
| 2017-08-20 | 🇵🇹Castro Daire, Portugal | Eurocopter AS 350B3 Ecureuil | 1 | fatal | Wire strike | Público |
| 2017-08-18 | 🇦🇺Darwin Aerodrome, Australia | Robinson R44 II | - | minor | Unknown | NTSB |
| 2017-08-17 | 🇬🇧Wellesbourne, Warwickshire, United Kingdom | Eurocopter EC 120B Colibri | - | minor | Mechanical failure | AAIB |
| 2017-08-14 | 🇺🇸Westby, United States | Robinson R44 | - | unknown | Wire strike | NTSB CAROL |
| 2017-08-13 | 🇦🇴Caiundo, Angola | Mil Mi-171Sh | - | serious | Pilot error | AllAfrica |
| 2017-08-12 | 🇺🇸Charlottesville, United States | Bell 407 | 2 | fatal | Weather | NTSB CAROL |
| 2017-08-10 | 🇺🇸Villa Grove, United States | Hughes 369D | - | serious | Pilot error | NTSB CAROL |
| 2017-08-10 | 🇩🇿5km SW of Douera, Algeria | Bell 206L-3 | 4 | fatal | Wire strike | TSA Algérie |
| 2017-08-05 | 🇦🇺off Shoalwater Bay, Australia | Bell-Boeing MV-22B Osprey | 3 | fatal | Pilot error | USNI News |
| 2017-08-03 | 🇺🇸Solomon, United States | Robinson R44 | - | unknown | Pilot error | NTSB CAROL |
| 2017-08-03 | 🇺🇸Delta Junction, United States | Eurocopter AS350 | - | unknown | Pilot error | NTSB CAROL |
| 2017-08-02 | 🇺🇸Jupiter, United States | Sikorsky S-97A | - | minor | Mechanical failure | NTSB CAROL |
| 2017-08-02 | 🇲🇽Puerto Chiapas, Mexico | Robinson R44 | 1 | fatal | Unknown | NTSB |
| 2017-08-02 | 🇦🇺Cloncurry, Australia | Robinson R22 Beta | 1 | fatal | Unknown | NTSB |
| 2017-08-02 | 🇬🇧Private landing site near Clifton Dykes, Penrith, Cumbria, United Kingdom | Leonardo AW109SP Grand New | - | minor | Mechanical failure | AAIB |
| 2017-08-01 | 🇦🇫near Achin district, Afghanistan | Sikorsky HH-60 Black Hawk | - | serious | Pilot error | Military Tim |
| 2017-08-01 | 🇦🇹Heiligenblut, Austria | MD Helicopters MD 900 | - | minor | Unknown | NTSB |
| 2017-07-31 | 🇺🇸Dunlap, United States | Robinson R44 | - | minor | Pilot error | NTSB CAROL |
| 2017-07-28 | 🇺🇸Beaumont, United States | Guimbal Cabri G2 | - | minor | Pilot error | NTSB CAROL |
| 2017-07-26 | 🇺🇸Santa Ana, United States | Robinson R44 II | - | unknown | Pilot error | NTSB CAROL |
| 2017-07-26 | 🇺🇸Santa Ana, United States | Robinson R44 II | - | minor | Unknown | NTSB |
| 2017-07-24 | 🇺🇸Myrtle Beach, United States | Robinson R44 | - | unknown | Pilot error | NTSB CAROL |