NTSB investigations, 2012
236 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\") = 2012
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") = 2012
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 WPR13FA073Accident · 2 fatalField investigationFinal reportBeech B100 · Libby, MTThe noncertificated pilot’s failure to maintain clearance from terrain while maneuvering to land in dark night conditions likely due to his geographic disorientation (lost). Contributing to the accident was the pilot’s improper decision to fly at night with a…NTSB WPR13LA069Accident · Serious injuriesLimited investigationFinal reportPowerchute Airwolf 912ULS · Dell, MTThe pilot's failure to maintain aircraft control and clearance from mountainous terrain while maneuvering at a low altitude in downdraft conditions.NTSB ERA13LA087Accident · Minor injuriesLimited investigationFinal reportRotorway DB-1 · Mayland, TNThe pilot’s failure to maintain helicopter control following a high-side governor failure for reasons that could not be determined during postaccident examination.NTSB CEN13FA100Accident · 2 fatalField investigationFinal reportAerovodochody L-29 Delfin · Combine, TXThe airplane's impact with terrain for reasons that could not be determined during examination of the available evidence because of extensive impact damage and postimpact fire.NTSB CEN13FA089Accident · 1 fatalField investigationFinal reportBeech 58 · Manhattan, ILAn in-flight loss of control and impact with terrain for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB WPR13LA062Accident · 1 fatalLimited investigationFinal reportCessna 172S · Kahului, HIThe noninstrument-rated pilot’s spatial disorientation and subsequent failure to maintain airplane control while operating over water in dark night conditions with reduced visibility due to rain in the area.NTSB CEN13FA085Accident · 4 fatalField investigationFinal reportPiper PA 46-350P · Greensburg, INThe pilot's failure to maintain airplane control while maneuvering in night instrument meteorological conditions due to spatial disorientation.NTSB CEN13FA082Accident · 2 fatalField investigationFinal reportBeech P35 · Correctionville, IAThe pilot’s failure to perform a go-around after encountering thick fog at night.NTSB CEN13LA086Accident · 1 fatalLimited investigationFinal reportBell 47G-2 · Walkerville, MIThe pilot's failure to maintain altitude while maneuvering, which resulted in a collision with trees. Contributing to the accident was the pilot's decision to fly at a low altitude, which did not provide enough margin to recover from the descent.NTSB CEN13CA079Accident · Minor injuriesData collectionFinal reportSchweizer SGS 2-32 · Boulder, COThe glider pilot's inability to locate an area of thermal lift.NTSB WPR13CA057Accident · Minor injuriesData collectionFinal reportHughes 369D · Sheridan, ORThe pilot’s failure to prevent the helicopter from entering a vortex ring state (settling with power) condition during an external load operation, which resulted in the helicopter’s main rotor blades impacting the truck.NTSB WPR13FA056Accident · 2 fatalField investigationFinal reportMcdaniel RV-6-CH · Scio, ORThe pilot's decision to perform aerobatics in an airplane that was prohibited from aerobatics as stated in its operating limitations document, which resulted in the failure of the right wing spar.NTSB WPR13LA050Accident · 1 fatalLimited investigationFinal reportSater Coot A-Amphib · San Andreas, CAThe pilot's excessive flight control inputs, which led to flight that exceeded the structural limits of the airplane and resulted in structural failure of both wings.NTSB ERA13WA066Accident · 1 fatalForeign investigationAerospatiale AS-355F1 · Great Guana Cay, BahamasOn November 22, 2012, about 1310 eastern standard time, an Aerospatiale AS 355F1, Bahamian registration C6-APV, registered to Pioneer Caribbean Logistics Ltd., impacted terrain while attempting to land at Baker's Bay Resort, Great Guana Cay, Bahamas. The…NTSB CEN13FA060Accident · 2 fatalField investigationFinal reportGrumman American Avn. AA-1B · Burlington, WIThe pilot’s failure to maintain control of the airplane while maneuvering at a low altitude, which resulted in an inadvertent stall and spin.NTSB WPR13GA044Accident · Minor injuriesFinal reportBell OH-58 · Altadena, CAThe landing pilot's failure to maintain clearance with from obstacles a parked prior to landinghelicopter and the other pilot's failure to park the helicopter inside of a marked parking pad. Contributing to the accident was the landing pilot's obscured…NTSB ERA13WA431Accident · 3 fatalForeign investigationBeech 95B55 - B · Concepcion, ParaguayOn November 16, 2012, about 0813 local time (1113 coordinated universal time), a Beech BE-55, Paraguayan registration ZP-BLV, was destroyed when it impacted terrain about 500 meters short of the runway at a ranch in Departamento Presidente Hayes, about 50…NTSB ERA13LA057Accident · 2 fatalLimited investigationFinal reportHughes 369D · Corning, NYThe pilot’s failure to maintain adequate altitude while conducting a power line aerial observation flight, which resulted in an in-flight collision with wires. Contributing to the accident was the pilot’s lack of total experience in the type of operation.NTSB WPR13FA036Accident · 2 fatalField investigationFinal reportNorth Wing Scout X-C · Waterville, WAThe pilot's failure to maintain control of the airplane while maneuvering at a low altitude, which resulted in a stall and subsequent spin from which he was unable to recover.NTSB WPR13LA035Accident · Minor injuriesLimited investigationFinal reportCessna 172M · Modesto, CAFailure of the throttle control cable during maneuvering flight, which resulted in a partial loss of engine power.NTSB CEN13FA051Accident · 1 fatalField investigationFinal reportPiper PA-28-140 · Anadarko, OKThe pilot’s use of excessive bank angle while maneuvering in the airport traffic pattern, which resulted in an accelerated stall.NTSB ERA13GA046Accident · 2 fatalFinal reportHughes OH-6A · Atlanta, GAThe pilot's failure to maintain sufficient altitude during maneuvering flight, which resulted in his failure to see and avoid a power pole and wires.NTSB CEN13LA034Accident · 2 fatalLimited investigationFinal reportUS Light Hornet · Mont Belvieu, TXThe pilot’s inadequate airspeed management while maneuvering in gusty wind conditions, which resulted in an aerodynamic stall. Contributing to the accident was the airplane’s low altitude, which did not allow for a stall recovery.NTSB WPR13LA025Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R22 Mariner · Lake Havasu, AZThe pilot’s unintentional and unrecognized entry into a vortex ring state as a result of conducting a course reversal turn into a tailwind while at a low altitude and airspeed, which resulted in an uncontrolled descent into water.NTSB WPR13LA023Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R-44 II · Toutle, WAThe pilot’s failure to maintain precise altitude control, which resulted in the helicopter entering a settling with power condition while hovering out of ground effect.NTSB WPR13FA022Accident · 2 fatalField investigationFinal reportBehne Glasair III · Byron, CAThe pilot's failure to maintain control of the airplane while maneuvering, which resulted in a stall and subsequent spin.NTSB ERA13FA032Accident · 2 fatalField investigationFinal reportSwift Museum Foundation GC-1A · East Moriches, NYThe failure of the pilot to maintain airspeed, while attempting a precautionary landing for reasons that could not be determined from the available evidence. Contributing to the accident was the pilot’s pitch-up reaction to birds that took flight during his…NTSB ERA13LA029Accident · Minor injuriesLimited investigationFinal reportGrumman Acft ENG Cor-Schweizer G-164B · Edison, GAThe total loss of engine power due to the fatigue failure of the k-pin associated with the No. 1 cylinder.NTSB WPR13FA017Accident · 1 fatalField investigationFinal reportCessna 182P · Yucca, AZThe pilot’s failure to take corrective action to avoid terrain during cruise flight for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB CEN13CA019Accident · No injuriesData collectionFinal reportAir Tractor AT-502B · Portales, NMThe pilot’s failure to maintain clearance from power lines during an aerial application flight.NTSB ERA13TA021Accident · Minor injuriesFinal reportBell OH-58A · Jackson, TNA loss of engine power for undetermined reasons because postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation.NTSB ERA13LA022Accident · No injuriesLimited investigationFinal reportHughes/Helicopter Assocs 369A · West Chester, PAThe pilot’s failure to see and avoid the preceding helicopter while maneuvering for landing. Contributing to the accident were the flight lead pilot’s inadequate preflight briefing and in-flight instruction to the formation pilots, which resulted in the loss…NTSB ANC13FA001Accident · 1 fatalField investigationFinal reportGrumman G-44 · Aleknagik, AKThe pilot's decision to make multiple low passes over the glassy surface water, which resulted in an impact with the surface of the lake.NTSB WPR13LA007Accident · Serious injuriesLimited investigationFinal reportSchleicher ASH25M · Kamuela, HIThe pilot’s failure to maintain control of the glider after it encountered atmospheric conditions while maneuvering where the lift was not sufficient to maintain flight, which resulted in a stall and impact with terrain during the subsequent approach to land.NTSB ERA13WA156Accident · 1 fatalForeign investigationCessna 172S · Izmir, TürkiyeOn October 6, 2012, at 0915 Coordinated Universal Time (UTC), a Cessna 172S, Turkish registration TC-CBI, operated by the Turkish Aeronautical Association, impacted mountainous terrain during an instructional flight, near Izmir, Turkey. The flight instructor…NTSB CEN13FA006Accident · 4 fatalField investigationFinal reportBeech A36 · Mabank, TXThe pilot's loss of airplane control while maneuvering in instrument meteorological conditions.NTSB WPR13LA004Accident · No injuriesLimited investigationFinal reportPiper PA-28-161 · Chandler, AZThe failure of both flight instructors to see and avoid the other airplane while providing instrument flight training, which resulted in a midair collision.NTSB WPR13WA014Accident · 1 fatalForeign investigationRobinson R22 · Halls Creek, Australia, AustraliaOn October 3, 2012, at about 1100 universal coordinated time, a Robinson Helicopter Company, R-22 Beta, VH-LLF, sustained substantial damage when it collided with the side of a canyon near the Halls Creek Aerodrome, Australia. The pilot was fatally injured.…NTSB WPR13LA003Accident · No injuriesLimited investigationFinal reportRobinson Helicopter R22 Beta · Rockport, WAThe pilot's failure to maintain sufficient rotor rpm during a precautionary landing, which resulted in a hard landing.NTSB ERA13WA030Accident · 1 fatalForeign investigationPiper PA25 · Juquiá Municipality, BrazilOn October 03, 2012, at 1100 universal coordinated time, a Piper PA-25-260, Brazilian registration PT-DOX, was destroyed when it impacted the ground and was consumed by fire after colliding with high-tension electric wires. The pilot was fatally injured. The…NTSB ERA13WA085Accident · No injuriesForeign investigationThrush S2R-T34 · Naranjal, EcuadorOn October 2, 2012, a Thrush S2R-T34, Ecuadorian registration HC-CFU, operated by a private owner, was substantially damaged following an engine failure and collision with terrain near Naranjal Province, Guayas, Ecuador. The flight's last departure point and…NTSB WPR12LA442Accident · 1 fatalLimited investigationFinal reportAir Creation Tanarg · Safford, AZThe pilot’s failure to maintain airplane control while maneuvering in high wind conditions and his failure to adjust the trim appropriately. Contributing to the accident was the airplane’s nonstandard modified wing configuration.NTSB CEN12LA669Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R44 · Nocona, TXThe noncertificated pilot’s operation of the helicopter, which resulted in impact with the water.NTSB CEN12FA670Accident · Serious injuriesField investigationFinal reportAgusta A109E · Eastland, TXThe loss of helicopter control after an in-flight upset, which occurred when the pilot selected the autopilot’s altitude hold mode; the reason for the reported in-flight control anomaly could not be determined during postaccident helicopter examinations.…NTSB ERA12LA578Accident · 1 fatalLimited investigationFinal reportCessna 172B · Atlantic Ocean (Atlantic Ocean)The pilot’s suicidal act.NTSB WPR12LA426Accident · No injuriesLimited investigationFinal reportBell 206 - B · Mammoth Lakes, CAThe pilot’s inability to maintain sufficient main rotor rpm while maneuvering in high density altitude conditions, which resulted in a precautionary landing and subsequent rollover.NTSB CEN12LA650Accident · No injuriesLimited investigationFinal reportHiller UH-12B · Rio Vista, TXThe catastrophic failure and disintegration of the No. 6 engine piston, which resulted in a total loss of engine power.NTSB ANC12LA107Accident · Serious injuriesLimited investigationFinal reportPiper PA-22-160 · Talkeetna, AKThe flight instructor's failure to maintain adequate airspeed while maneuvering at a low altitude, which resulted in an inadvertent stall.NTSB WPR12LA428Accident · Minor injuriesLimited investigationFinal reportRockwell International 690A · Ellensburg, WAThe pilot’s failure to avoid a turbulent smoke column, which resulted in an overstress failure of the left aileron control rod.NTSB ERA12FA565Accident · 2 fatalField investigationFinal reportYakovlev YAK 52 · Brownsboro, ALThe pilot's loss of control while performing a low-level aerobatic maneuver, which resulted in collision with terrain.