NTSB investigations, 2017
201 cases where the phase of flight was Maneuvering.
Cases per year
| 1964 | 415 |
|---|---|
| 1965 | 419 |
| 1966 | 366 |
| 1967 | 410 |
| 1968 | 394 |
| 1969 | 360 |
| 1970 | 330 |
| 1971 | 384 |
| 1972 | 359 |
| 1973 | 407 |
| 1974 | 410 |
| 1975 | 407 |
| 1976 | 480 |
| 1977 | 443 |
| 1978 | 433 |
| 1979 | 384 |
| 1980 | 377 |
| 1981 | 374 |
| 1982 | 416 |
| 1983 | 476 |
| 1984 | 462 |
| 1985 | 402 |
| 1986 | 357 |
| 1987 | 357 |
| 1988 | 349 |
| 1989 | 313 |
| 1990 | 307 |
| 1991 | 350 |
| 1992 | 309 |
| 1993 | 315 |
| 1994 | 322 |
| 1995 | 320 |
| 1996 | 279 |
| 1997 | 262 |
| 1998 | 259 |
| 1999 | 267 |
| 2000 | 281 |
| 2001 | 257 |
| 2002 | 241 |
| 2003 | 263 |
| 2004 | 224 |
| 2005 | 212 |
| 2006 | 203 |
| 2007 | 222 |
| 2008 | 235 |
| 2009 | 208 |
| 2010 | 222 |
| 2011 | 250 |
| 2012 | 236 |
| 2013 | 216 |
| 2014 | 199 |
| 2015 | 217 |
| 2016 | 177 |
| 2017 | 201 |
| 2018 | 187 |
| 2019 | 197 |
| 2020 | 165 |
| 2021 | 186 |
| 2022 | 186 |
| 2023 | 191 |
| 2024 | 166 |
| 2025 | 145 |
| 2026 | 90 |
Where
Latest cases
Query with SQL
duckdb -csv -c "WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
current_codes AS (
SELECT e.case_mkey, TRY_CAST(e.\"tier1Number\" AS INTEGER) AS code,
row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e.\"isDefiningEvent\", false) DESC, e.position) AS n
FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
WHERE e.aircrafts_position = 1 AND e.\"tier1Number\" GLOB '[1-9][0-9]*'
AND (e.\"isDefiningEvent\" OR e.case_mkey IN (SELECT \"mKey\" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE \"isPre1982\"))
),
phases AS (
SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
FROM current_codes WHERE n = 1
UNION ALL
SELECT o.case_mkey, 'older', o.\"phaseOfFlightCode\", w.main
FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o.\"phaseOfFlightCode\"
WHERE o.aircrafts_position = 1 AND o.\"occurrenceNumber\" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
),
case_phases AS (
SELECT p.*, c.\"eventDate\", c.\"highestInjuryLevel\" = 'Fatal' AS fatal, a.aircraft_model_code
FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = p.case_mkey
LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
WHERE c.\"eventDate\" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
)
SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
WHERE year(c.\"eventDate\") = 2017
AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 450)
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
current_codes AS (
SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
),
phases AS (
SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
FROM current_codes WHERE n = 1
UNION ALL
SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
),
case_phases AS (
SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
)
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE year(c."eventDate") = 2017
AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 450)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB CEN18FA063Accident · 12 fatalField investigationFinal reportCessna 208 · Punta Islita, Costa RicaThe flight crew's failure to maintain airspeed while maneuvering to exit an area of rising terrain, which resulted in an exceedance of the airplane's critical angle of attack and an aerodynamic stall. Contributing to the accident was the flight crew's…NTSB WPR18FA063Accident · 2 fatalField investigationFinal reportCessna 172M · Ogden, UTThe pilot's failure to maintain clearance from the water while flying over a lake with glassy surface conditions. Contributing to the accident was the pilot's use of three impairing medications.NTSB CEN18LA064Accident · No injuriesLimited investigationFinal reportPipistrel Doo Ajdovscina Virus SW · Paulding, OHThe loss of engine power while the motor-powered glider was maneuvering due to the fuel unporting in its fuel tank, which resulted in fuel starvation and a subsequent forced landing on unsuitable terrain.NTSB ERA18WA069Incident · No injuriesForeign investigationCessna A188 · Montecristi, Dominican RepublicThe government of Dominican Republic has notified the NTSB of an accident involving a CESSNA A188 airplane that occurred on December 23, 2017. The NTSB has appointed a U.S. Accredited Representative to assist the government of Dominican Republic's…NTSB CEN18FA060Accident · 1 fatalField investigationFinal reportX-Air XA85 · Oskaloosa, IAThe pilot's low altitude flight into a power line due to his impairment from an acute physiologic event during the flight. Contributing to the pilot's impairment was his use of two sedating medications.NTSB WPR18LA050Accident · No injuriesLimited investigationFinal reportGray Jim Robert Exec · Caldwell, IDFailure of the oil pressure gauge line, which resulted in oil exhaustion and a total loss of engine power.NTSB GAA18CA073Accident · No injuriesData collectionFinal reportBrock Steiner Sport Copter Vortex · Spanish Fork, UTThe pilot’s failure to maintain situational and geographic awareness during the flight, which resulted in him becoming lost and exhausting the gyroplane’s fuel.NTSB ERA18FA030Accident · 1 fatalField investigationFinal reportMooney M20C · Starke, FLThe pilot's loss of control due to spatial disorientation while maneuvering in instrument meteorological conditions. Contributing was the pilot's lack of instrument currency and his self-induced pressure to complete the flight.NTSB CEN18WA046Accident · 2 fatalForeign investigationMD Helicopter 369HS · La Morita, MexicoOn November 22, 2017, about 1437 pacific standard time, a MD Helicopters 369HS single-engine helicopter, serial number 920414S, Mexican registration XC-TIJ, crashed while providing aerial support for police activity near La Morita, Mexico. The pilot and his…NTSB WPR18FA035Accident · 1 fatalField investigationFinal reportCessna 152 · Tehachapi, CAThe pilot's loss of situational awareness shortly after takeoff over a sparsely lit area in dark night conditions, which resulted in a rapid descent to ground impact.NTSB CEN18LA034Accident · No injuriesLimited investigationFinal reportErcoupe 415 CD · Aurora, COThe failure of the engine-driven fuel pump and the pilot's failure to identify the pump's failure, which resulted in a loss of engine power due to fuel starvation and a forced landing on a road, during which the airplane hit obstacles.NTSB CEN18FA035Accident · 1 fatalField investigationFinal reportRobinson Helicopter R22 Beta · Electra, TXThe pilot's failure to maintain clearance from powerlines while maneuvering at low altitude.NTSB GAA18CA054Accident · Minor injuriesData collectionFinal reportQuicksilver MXL Sport · Point Mugu, CAThe pilot’s failure to see and avoid power wires.NTSB ERA18WA160Accident · 1 fatalForeign investigationPiper PA-25-235 · Itapolis, BrazilThe government of Brazil has notified the NTSB of an accident involving a PIPER AIRCRAFT PA-25-235 airplane that occurred on November 14, 2017. The NTSB has appointed a U.S. Accredited Representative to assist the government of Brazil's investigation under…NTSB ERA18LA021Accident · No injuriesClass 2 · LimitedFinal reportSocata TB200 · Annapolis, MDA loss of engine power for undetermined reasons after the disconnection of the propeller governor control due to inadequate securenment during maintenance.NTSB CEN18FA030Accident · 1 fatalField investigationFinal reportTemco GC 1B · Pineville, LAThe loss of engine power due to fuel starvation, which resulted from the unporting of the fuel during a right turn due to the auxiliary fuel tanks' improper configuration.NTSB WPR18LA029Accident · Minor injuriesClass 3 · LimitedFinal reportBell 206 · Rolling Fork, MSAn uncommanded yaw and subsequent loss of main rotor rpm for reasons that could not be determined.NTSB GAA18CA044Accident · No injuriesData collectionFinal reportCessna 172 · Bonners Ferry, IDThe pilot’s failure to see and avoid power lines while maneuvering at a low altitude.NTSB CEN18LA026Accident · 2 fatalLimited investigationFinal reportHughes 369D · Sulphur, LAThe pilot's failure to maintain adequate separation between a long line being used to hoist linemen from a shield wire during an external load flight, which resulted in the long line being severed.NTSB ANC18FA007Accident · 1 fatalField investigationFinal reportIcon A5 · Clearwater, FLThe pilot's improper decision to perform aggressive, low-altitude maneuvers due to his impairment from the use of multiple psychoactive substances, which resulted in a loss of control.NTSB CEN18LA025Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 · Larchwood, IAThe pilot's loss of situational awareness, which resulted in his failure to maintain adequate clearance from powerlines.NTSB GAA18CA034Accident · No injuriesData collectionFinal reportAirbus Helicopters EC 130 · La Paloma, TXThe separation of a weight from the gunner’s net, which struck the helicopter’s main rotor blade during flight.NTSB GAA18CA029Accident · Serious injuriesData collectionFinal reportSix Chuter West Legend XL · Mabton, WAThe pilot’s failure to see and avoid transmission wires.NTSB WPR18FA016Accident · 1 fatalField investigationFinal reportRobinson R22 · Arlington, WAThe pilot's failure to maintain adequate clearance from the water while maneuvering at low altitude.NTSB ERA18WA029Accident · 1 fatalForeign investigationCessna A188 · Sao Felix do Xingu, BrazilThe government of Brazil has notified the NTSB of an accident involving a CESSNA A188 airplane that occurred on October 24, 2017. The NTSB has appointed a U.S. Accredited Representative to assist the government of Brazil's investigation under the provisions…NTSB CEN18LA019Accident · Serious injuriesClass 3 · LimitedFinal reportAir Tractor AT 502B · Olton, TXThe pilot's exceedance of the airplane’s critical angle of attack while maneuvering during the aerial application flight, which resulted in an aerodynamic stall and loss of control at an altitude too low to recover.NTSB ERA18WA017Accident · 5 fatalForeign investigationCessna 210 · Itaituba, BrazilOn October 22, 2017, about 2105 universal coordinated time, a Cessna 210N, Brazilian registration PT-ORU, operated by a private individual, was destroyed when it collided with terrain following a low altitude maneuver near Itaituba, Brazil. The two foreign…NTSB WPR18FA013Accident · 2 fatalField investigationFinal reportFlugzeugproduktions-und Vertri EA 300/L · Four Corners, CACollision with terrain after the pilot was unable to regain airplane control during an aerobatic maneuver. Contributing to the accident was the operator's failure to provide effective internal oversight to identify and prohibit exceedance of the airplanes'…NTSB GAA18CA012Accident · No injuriesData collectionFinal reportEurocopter Deutschland MBB BK 117 · Canton, ILThe flight instructor's incorrect cyclic control during a hover, which resulted in a hard landing.NTSB CEN18FA011Accident · 2 fatalField investigationFinal reportCessna 172M · Ramsey, MNThe pilot's decision to fly along the river at a low altitude contrary to applicable regulations and safety of flight considerations which resulted in the impact with the power lines. Contributing to the accident was the pilot's inability to see the and avoid…NTSB CEN18FA009Accident · 2 fatalField investigationFinal reportCessna 182H · Las Cruces, NMControlled flight into terrain in dark night conditions.NTSB CEN18FA004Accident · 1 fatalField investigationFinal reportAero Vodochody L39C · Vernon, TXAn in-flight loss of control and collision with terrain for reasons that could not be determined based on the available information.NTSB ERA18WA009Accident · 1 fatalForeign investigationZlin Z50 · Gauteng Province, South AfricaOn October 6, 2017, about 1530 coordinated universal time, a Zlin Z-50L, South African registration ZS-VAR, was destroyed when it impacted terrain shortly after takeoff from Kitty Hawk Airport (FAKT), Gauteng Province, South Africa. The pilot was fatally…NTSB CEN18WA005Accident · 1 fatalForeign investigationPiper PA25 · Cerro de Ortega, MexicoNTSB ERA18FA004Accident · 2 fatalField investigationFinal reportCessna 401 · Salters, SCThe pilot's decision to attempt a low-altitude aerobatic maneuver in a non-aerobatic airplane, and his subsequent failure to maintain control of the airplane during the maneuver. Contributing to the accident was the pilot's impairment by the effects of…NTSB CEN18FA001Accident · 1 fatalField investigationFinal reportBrantly B 2B · Midland, MIThe pilot's failure to maintain control of the helicopter, which resulted in a loss of tail rotor effectiveness, and his failure to promptly initiate the proper recovery technique, which resulted in a descent that could not be arrested before impacting the…NTSB ANC18RA001Accident · 1 fatalForeign investigationRobinson R44 · Campbell River, CanadaNTSB ERA17LA340Accident · Minor injuriesLimited investigationFinal reportWaco UPF 7 · Ocklawaha, FLA failure of both magnetos due to multiple deficiencies, which resulted in a total loss of engine power.NTSB CEN17LA372Accident · No injuriesLimited investigationFinal reportPiper PA 25-235 · Westphalia, KSA total loss of engine power due to a fatigue failure of the crankshaft that resulted from main bearing shift and lack of lubrication.NTSB GAA17CA562Accident · Minor injuriesData collectionFinal reportEurocopter AS 350 · Fullerton, CAThe pilot under evaluation’s failure to maintain adequate airspeed during a simulated hydraulic failure, which resulted in a loss of helicopter control. Contributing to the accident was the check pilot’s delayed remedial action.NTSB WPR17FA213Accident · 2 fatalField investigationFinal reportCessna 172L · Perkinsville, AZThe pilot's decision to fly into a canyon during wind conditions conducive to turbulence and downdrafts, and his subsequent loss of aircraft control while maneuvering in the canyon. Contributing to the accident was the pilot's limited canyon flying experience.NTSB GAA17CA555Accident · No injuriesData collectionFinal reportGodwin Jeff E Safari · Fayetteville, NCThe student pilot’s failure to maintain lateral control during a hover pedal turn.NTSB CEN17WA383Accident · 1 fatalForeign investigationBell 47G · Llano Bonito de Pococí, Costa RicaOn September 18, 2017, at 0720 central daylight time, a Bell 47G2 helicopter, Costa Rican registration TI-BGH, serial number 1459, impacted terrain during an aerial application flight, near Llano Bonito de Pococí, Costa Rica. The pilot was fatally injured,…NTSB WPR17LA209Accident · No injuriesLimited investigationFinal reportTrudel GP 4 · Reno, NVThe other pilot's failure to maintain clearance from the airplane during the line-abreast formation.NTSB WPR17LA206Accident · Minor injuriesClass 3 · LimitedFinal reportBell 47G 5 · Salinas, CAThe pilot’s inadequate visual lookout, which resulted in an in-flight collision with a wire.NTSB ERA17LA328Accident · Minor injuriesLimited investigationFinal reportPiper J3C · Hanover Township, PAThe pilot's failure to maintain roll control while maneuvering, which resulted in a collision with trees and terrain.NTSB CEN17FA354Accident · 4 fatalField investigationFinal reportCirrus Design SR22 · Glenwood Springs, COThe non-instrument-rated pilot's inadequate preflight weather planning, his decision to depart into forecast instrument meteorological conditions along the route of flight, and his continued visual flight into instrument meteorological conditions, which…NTSB CEN17WA353Accident · 2 fatalForeign investigationMooney M 20K · Braunwald, SwitzerlandNTSB CEN17LA375Accident · No injuriesLimited investigationFinal reportHiller UH 12A · Griffith, INThe loss of tail rotor thrust due to a failed tail rotor driveshaft, which resulted in a loss of tail rotor control and a hard landing.NTSB CEN17FA342Accident · 2 fatalField investigationFinal reportRans S-6 · Stonewall, TXThe pilot's failure to maintain terrain clearance while conducting aerobatic flight maneuvers with insufficient altitude to recover.