NTSB investigations, 2015
217 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 | 234 |
| 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\") = 2015
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") = 2015
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 ANC16LA011Accident · 1 fatalLimited investigationFinal reportCessna 172 · Anchorage, AKThe pilot's intentional flight into a building.NTSB CEN16LA084Accident · Minor injuriesLimited investigationFinal reportSchweizer 269C · Warrenton, MOThe noninstrument-rated pilot's continued flight into instrument meteorological conditions at night, which resulted in the loss of visual reference to the ground and his subsequent failure to maintain clearance from trees.NTSB GAA16CA102Accident · No injuriesData collectionFinal reportPiper PA 18A · Girdwood, AKFuel contamination resulting in the loss of engine power, a forced landing on a highway, and subsequent right wing impact with highway signage.NTSB WPR16FA040Accident · 2 fatalField investigationFinal reportAirbus Helicopters AS350 · Superior, AZThe pilot's loss of helicopter control in mountainous terrain as the result of operating the helicopter outside the performance envelope of its hydraulic system and encountering the servo transparency phenomenon. Contributing to the accident was the pilot's…NTSB ERA16LA070Accident · No injuriesLimited investigationFinal reportCirrus Design SR20 · Charles Town, WVThe flight instructor's inadequate remedial action and the student pilot's failure to maintain yaw control while practicing a stall, which resulted in an unintentional spin.NTSB GAA16CA082Accident · No injuriesData collectionFinal reportAeronca 7BCM · Reidsville, NCThe pilot's loss of pitch control while maneuvering at low altitude, which resulted in a collision with terrain, a left main landing gear collapse, and runway excursion.NTSB GAA16CA080Accident · Minor injuriesData collectionFinal reportAviat A1 · Broadus, MTThe pilot's failure to maintain clearance from the wires while flying at a low altitude resulting in a wire strike, a loss of airplane control, and the consequent impact with terrain.NTSB WPR16FA036Accident · 2 fatalClass 3 · FieldFinal reportBarnett Allen S RV7 · Hurricane, UTThe pilot’s aerobatic maneuver leading to airspeeds above the airplane’s never exceed speed, which resulted in rudder flutter and an in-flight breakup.NTSB CEN16LA058Accident · Minor injuriesLimited investigationFinal reportMcdonnell Douglas Helicopter 600N · Angleton, TXA loss of control while hovering for reasons that could not be determined, because postaccident examination revealed no mechanical anomalies or failures that would have precluded normal operation.NTSB CEN16FA054Accident · 2 fatalField investigationFinal reportCessna 140 · Keytesville, MOThe non-instrument-rated pilot's decision to operate in dark night conditions with low clouds, which resulted in a loss of control due to spatial disorientation. Contributing to the accident was the pilot's use of methamphetamine, which impaired his…NTSB CEN16WA060Incident · No injuriesForeign investigationSikorsky S92 · Wexford, IrelandOn December 6, 2015, at 1415 universal coordinated time, a Sikorsky S92 helicopter, Irish registration EI-ICG, was involved in an off shore rescue operation. Two victims were being recovered when one of the victims slipped from the recue harness, fell back…NTSB CEN16FA059Accident · 1 fatalField investigationFinal reportCessna 182C · Pattonsburg, MOThe pilot's loss of airplane control while maneuvering during low-level flight for reasons that could not be determined because examination of the airframe and engine did not reveal any preimpact anomalies.NTSB ANC16WA008Accident · 2 fatalForeign investigationRobinson R22 · Annaka City, JapanOn November 22, 2015, at 0157 coordinated universal time, a Japanese registered Robinson R22 helicopter, JA7963, operated by a private individual, impacted the slope face of a speedway in Annaka City, Gunma Prefecture, Japan. The pilot and sole passenger…NTSB ANC16WA007Accident · 2 fatalForeign investigationBell 206 · New Taipei City, TaiwanOn November 22, 2015, about 0302 Coordinated Universal Time, a Bell 206 helicopter, Taiwan Island registration number B-31127, operated by Emerald Pacific Airlines, was destroyed following an impact with terrain about 7 nautical miles southwest of Taipei…NTSB CEN16LA043Accident · Minor injuriesLimited investigationFinal reportHickham Lancair IV-P · Shawano, WIA total loss of engine power due to a dual magneto failure, as a result of an exceedance of the engine’s operating limitations while maneuvering.NTSB CEN16LA040Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R22 Beta · Sugarland, TXThe overspeed of the main rotor system for reasons that could not be determined based on the available information.NTSB CEN16LA039Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Alpine, TXThe pilot’s failure to maintain adequate rotor speed while maneuvering at low altitude, which resulted in a descent from which he was unable to recover. Contributing to the accident was the pilot's decision to conduct the flight at or near the helicopter's…NTSB CEN16WA041Accident · 2 fatalForeign investigationCessna 182 · Parry Sound, CanadaOn November 10, 2015, at 0020 universal coordinated time, a Canadian registered Cessna 182H airplane, C-GKNZ, impacted terrain shortly after takeoff from the Parry Sound Area Municipal Airport (CNK4), Parry Sound, Ontario, Canada. The pilot and passenger were…NTSB ERA16FA031Accident · 1 fatalField investigationFinal reportFlight Design Ctls · Queens, NYThe noninstrument-rated pilot's spatial disorientation and subsequent loss of airplane control while maneuvering at low altitude, over water with no visible horizon, in dark night conditions, which resulted in a collision with the water.NTSB CEN16LA031Accident · Minor injuriesLimited investigationFinal reportAmerican Autogyro Sparrowhawk · Wakeman, OHA loss of engine power/performance for reasons that could not be determined because a postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.NTSB WPR16LA021Accident · No injuriesLimited investigationFinal reportMD Helicopter 369D · Sedro-Woolley, WAThe loss of engine power due to fuel starvation as a result of naphthenate fuel contamination, which blocked the fuel flow through the start pump.NTSB CEN16LA027Accident · No injuriesLimited investigationFinal reportBell 407 · San Antonio, TXThe failure of the No. 3 tail rotor adapter and shaft due to a loss of torque on the retaining nut. Contributing to the accident was the lack of a requirement to inspect the tail rotor assembly for security in the helicopter manufacturer's maintenance manual…NTSB WPR16LA020Accident · Minor injuriesLimited investigationFinal reportBell 206B · Dallas, ORA loss of engine power for reasons that could not be determined based on the available information.NTSB DCA16RA014Accident · 2 fatalForeign investigationBell Helicopter Textron 609 · Tronzano Vercellese, ItalyimportNTSB GAA16CA027Accident · No injuriesData collectionFinal reportCessna A188A · Elberta, UTThe pilot's failure to compensate for wind while maneuvering at a low altitude, resulting in a collision with terrain and a postcrash fire.NTSB WPR16LA016Accident · No injuriesLimited investigationFinal reportCessna 310C · Primm, NVThe inadequate visual lookout by the pilots of both airplanes, which resulted in a midair collision. Contributing to the accident was the pilots' failure to tune to, monitor, and communicate over the common traffic advisory frequency their relative positions…NTSB GAA16CA026Accident · No injuriesData collectionFinal reportRans S-7 · Gerlach, NVThe pilot's failure to maintain pitch and airspeed control, in conjunction with full flaps, while maneuvering at a low altitude, resulting in a tail-stall and subsequent impact with the ground.NTSB CEN16LA015Accident · No injuriesLimited investigationFinal reportBobby Martin Autogyro MTO Sport · Wallisville, TXFracture of the pusher propeller blade due to impact damage from an unknown object while in flight, which resulted in a severe vibration and a loss of thrust.NTSB CEN16FA014Accident · 2 fatalField investigationFinal reportZidek Vans RV-4 · Cortland, NEThe pilot's decision to intentionally maneuver at a low altitude and his failure to maintain adequate airspeed during the climbing right turn, which resulted in the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall.NTSB ERA16LA015Accident · No injuriesLimited investigationFinal reportBell 206L 3 · Dickinson, ALThe improper installation by company maintenance personnel of the securing hardware of a tail rotor driveshaft section, which resulted in that section of tail rotor driveshaft disconnecting and a complete loss of tail rotor thrust.NTSB ERA16LA008Accident · 1 fatalLimited investigationFinal reportCessna 172S · Seville, FLThe airplane’s encounter with a downdraft, and the pilot's decision to maneuver the airplane at a low altitude and airspeed, which provided insufficient time and altitude to recover before impacting terrain.NTSB ANC16FA001Accident · 1 fatalField investigationFinal reportCessna 150F · Big Lake, AKThe pilot’s failure to maintain adequate airspeed and his exceedance of the airplane’s critical angle-of-attack while maneuvering, which resulted in a stall at too low an altitude to allow recovery.NTSB WPR16FA002Accident · 2 fatalField investigationFinal reportCessna 152 · Cedar City, UTThe failure of the pilots to maintain control of the airplane while maneuvering, which resulted in an aerodynamic stall from which they did not recover.NTSB CEN16LA004Accident · Serious injuriesLimited investigationFinal reportCessna 150 · Dexter, MOThe pilot's impairment due to the ingestion of alcohol, which impaired his decision-making and resulted in his taking off and flying the airplane until the engine lost power due to fuel exhaustion.NTSB CEN16LA003Accident · Minor injuriesLimited investigationFinal reportBell 47G · Huntsville, TXThe pilot's loss of helicopter control during an agricultural application pass for reasons that could not be determined due to the extent of damage to the flight control system.NTSB CEN16WA010Accident · 1 fatalForeign investigationPiper PA31 · Veracruz, NicaraguaNTSB CEN15LA437Accident · Minor injuriesLimited investigationFinal reportCapella Aircraft Corporation ( FW2TDXLS · Bartlesville, OKThe pilot’s failure to maintain airplane control after takeoff.NTSB CEN15LA428Accident · Serious injuriesLimited investigationFinal reportSukhoi SU-26 · Slidell, TXThe pilot's attempt to recover from an aerobatic maneuver at too low of an altitude to make a safe recovery.NTSB CEN15FA424Accident · 2 fatalField investigationFinal reportBeech S35 · Pagosa Springs, COImproper engine assembly by unknown maintenance personnel, which resulted in the failure of the No. 6 connecting rod due to oil starvation from the shifting of the crankshaft's No. 4 main bearing.NTSB GAA15LA296Accident · No injuriesLimited investigationFinal reportBell 206 · Ozark, ALThe pilot's failure to maintain clearance from terrain while hovering, which resulted in the helicopter's skid impacting terrain, subsequent abnormal airframe vibrations, and a hard landing during the subsequent hovering autorotation.NTSB ERA15LA375Accident · Serious injuriesLimited investigationFinal reportSchempp-Hirth Ventus 2CT · Blacksburg, VAA loss of thermal lift during a motor glider flight, which resulted in an off-airport landing. Contributing to the accident was the pilot’s failure to maintain adequate clearance from power lines during the off-airport landing attempt.NTSB CEN15LA423Accident · Serious injuriesLimited investigationFinal reportBell 206B · Woodville, TXThe loss of engine power due to water contamination in the fuel system. Contributing to the accident were the pilot’s inadequate preflight inspection of the fuel tanks and the operator’s inadequate inspection of the fuel supply truck that did not detect water…NTSB WPR15LA262Accident · No injuriesLimited investigationFinal reportGraves Bryon S Vans RV-7A · Byron, CAImproper overhaul of the right magneto, which eliminated system redundancy, and resulted in a loss of engine power when the left magneto failed during aerobatic flight maneuvers.NTSB ERA15LA366Accident · Minor injuriesLimited investigationFinal reportCessna 172 · Bally, PAThe pilot's failure to maintain altitude during low-level aerobatic maneuvers. Contributing to the accident were the pilot's improper decision to attempt the low-level aerobatic maneuvers and his impairment due to psychiatric conditions and the medications he…NTSB ERA15FA362Accident · 2 fatalField investigationFinal reportCessna 150H · Morrisville, NYThe pilot's failure to maintain airspeed and her exceedance of the airplane's critical angle-of-attack, which led to an aerodynamic stall, following a total loss of engine power for reasons that could not be determined because postaccident examination of the…NTSB ERA15LA363Accident · Serious injuriesLimited investigationFinal reportCessna 172E · Gettysburg, PAThe total loss of engine power due to carburetor icing. Contributing to the accident was the pilot's failure to maintain a proper approach speed during the forced landing, which resulted in impact with trees.NTSB ANC15LA073Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R44 · Fort Glenn, AKThe separation of the tail rotor gearbox from the tailboom attachment point due to overstress loads imposed by a tail rotor blade imbalance as the result of impact with an undetermined object during low-level flight operations.NTSB WPR15LA261Accident · Minor injuriesLimited investigationFinal reportSchweizer 269C · Forest Grove, ORA partial loss of engine power during cruise flight for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.NTSB GAA15CA266Accident · Minor injuriesData collectionFinal reportSchweizer G 164B · Paxton, NEThe pilot's failure to maintain adequate distance from a power line during low altitude flight operations, which resulted in an impact with the power line, and subsequent impact with the ground.NTSB ERA15FA359Accident · 5 fatalField investigationFinal reportBoatright Waylon RV10 · Alma, GAThe noncertificated pilot's decision to perform aerobatic maneuvers in his overweight, improperly-loaded airplane in dark night conditions at low altitude, which resulted in a loss of airplane control and collision with terrain. Contributing to the accident…