NTSB investigations, 2011
250 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\") = 2011
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") = 2011
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 ERA12MA122Accident · 3 fatalMajor investigationFinal reportBell 206B · Green Cove Springs, FLThe pilot’s improper decision to continue visual flight into night instrument meteorological conditions, which resulted in controlled flight into terrain. Contributing to the pilot’s improper decision was his self-induced pressure to complete the trip.NTSB ERA12LA126Accident · No injuriesLimited investigationFinal reportClassic Waco YMF5 · Marathon, FLThe pilot did not ensure that there was sufficient fuel aboard the airplane before initiating the flight, which resulted in temporary fuel starvation and an interruption in engine power during maneuvering. Contributing to the accident was the pilot’s decision…NTSB CEN12LA112Accident · 1 fatalLimited investigationFinal reportAmerican Champion 8KCAB · Marysville, OHThe pilot’s failure to maintain sufficient altitude from the terrain while performing low-level aerobatics.NTSB CEN12LA109Accident · 1 fatalLimited investigationFinal reportCessna 172R · Denton, TXThe pilot's controlled flight into terrain while maneuvering at a low altitude in instrument meteorological conditions. Contributing to the accident was the pilot's decision to perform a circling maneuver in weather below circling minimums instead of flying…NTSB CEN12CA119Accident · Serious injuriesData collectionFinal reportQuicksilver MXL II · Loreauville, LAThe student pilot did not maintain adequate airspeed while maneuvering at low altitude, which resulted in an aerodynamic stall.NTSB WPR12CA069Accident · Minor injuriesData collectionFinal reportCessna 208 · Mesquite, NVThe pilot's improper preflight planning, which resulted in a loss of engine power due to fuel exhaustion.NTSB WPR12FA066Accident · Serious injuriesField investigationFinal reportRobinson Helicopter R22 Beta · Tucson, AZA loss of engine power due to the pilot's failure to utilize carburetor heat while maneuvering. .NTSB WPR12LA065Accident · Minor injuriesLimited investigationFinal reportBell 407 · Rock Springs, WYThe unauthorized operation of the helicopter by a non-certificated and unqualified individual who failed to maintain helicopter control.NTSB WPR12FA062Accident · 1 fatalField investigationFinal reportCrosley Vans RV-8 · Armistead, CAThe pilot’s failure to maintain clearance from terrain while performing low altitude aerobatic maneuvers.NTSB CEN12FA101Accident · 2 fatalField investigationFinal reportPiper PA-28-235D · Chickasha, OKThe non-instrument-rated pilot's decision to continue flight into instrument meteorological conditions, which resulted in the pilot’s spatial disorientation and loss of control of the airplane. Contributing to the accident was the pilot’s lack of instrument…NTSB CEN12FA100Accident · 4 fatalField investigationFinal reportCessna 421C · Sioux Falls, SDThe pilot’s failure to maintain adequate airspeed after shutting down one engine, which resulted in an inadvertent aerodynamic stall and impact with terrain. Contributing to the accident was the pilot’s failure to follow the guidance contained in the pilot’s…NTSB ERA12LA101Accident · No injuriesLimited investigationFinal reportCessna 172D · Belhaven, NCA total loss of engine power for reasons that could not be determined because postaccident examination did not reveal any anomalies that would have precluded normal operation.NTSB CEN12FA097Accident · 2 fatalField investigationFinal reportPiper PA-32-260 · St. Ignace, MIThe pilot’s decision to initiate visual flight in instrument meteorological conditions and subsequent failure to maintain adequate altitude.NTSB ERA12WA103Accident · 4 fatalForeign investigationCessna TU206 · Cerro Escalera, PeruOn December 1, 2011, about 2048 UTC, a Cessna TU206G, Peruvian registration OB-1299, registered to and operated by Palmas del Espino S.A., collided with mountainous terrain near Cerro Escalera, Peru. Weather conditions at the altitude, location, and time of…NTSB CEN12FA090Accident · 2 fatalField investigationFinal reportCessna 182R · Mescalero, NMThe pilot's intentional attempt to fly into adverse weather, which resulted in an in-flight loss of control. Contributing to the accident was the pilot's lack of instrument experience.NTSB CEN12FA091Accident · 1 fatalField investigationFinal reportRobinson Helicopter R44 II · Hackensack, MNThe helicopter's sudden yaw and subsequent impact with the water for reasons that could not be determined during postaccident examination of the helicopter and its systems.NTSB CEN12FA082Accident · 1 fatalField investigationFinal reportBeech 23 · West Milton, OHThe non-instrument-rated pilot's decision to attempt a flight into instrument meteorological conditions, which resulted in the pilot’s spatial disorientation and subsequent loss of control of the airplane.NTSB ERA12WA136Accident · No injuriesForeign investigationPiper PA36 · Machala, EcuadorOn November 23, 2011, about 2000 coordinated universal time, a Piper PA-36-300, Ecuadorian registration HC-BHJ, operated by Aerorient Fumigacion Aerea, was substantially damaged when the pilot made a forced landing following loss of engine power in a banana…NTSB WPR12LA036Accident · Serious injuriesLimited investigationFinal reportBell 206B · Woodburn, ORThe pilot’s failure to maintain ground clearance while maneuvering with an external load line.NTSB ERA12FA068Accident · 2 fatalField investigationFinal reportCirrus Design SR22 · Boynton Beach, FLThe right seat pilot's decision to attempt a low-altitude aerobatic maneuver in a non-aerobatic airplane.NTSB WPR12MA034Accident · 5 fatalMajor investigationFinal reportEurocopter EC 130 B4 · Pukoo, HIThe pilot's failure to maintain clearance from mountainous terrain while operating in marginal weather conditions, which resulted in the impact of the horizontal stabilizer and lower forward portion of the fenestron with ground and/or vegetation and led to…NTSB ERA12LA070Accident · No injuriesLimited investigationFinal reportCessna 172RG · Kissimmee, FLA fatigue failure of the right main landing gear pivot assembly, which prevented the landing gear from extending.NTSB ERA12LA063Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R22 Beta · West Palm Beach, FLThe pilot’s failure to maintain airspeed during a low-altitude turn into gusty tailwind conditions, which resulted in a loss of translational lift and settling with power. Contributing to the accident was the pilot's lack of total flight experience.NTSB WPR12CA026Accident · Serious injuriesData collectionFinal reportAyres S2R-600 · Kahlotus, WAThe pilot’s failure to maintain clearance from the ground due to his distraction with programming a global positioning system receiver.NTSB CEN12RA052Accident · 3 fatalClass 5 · ForeignBell 206L · Kapuskasing, CanadaOn November 2, 2011, about 0958 eastern daylight time (EDT), a Bell 206L helicopter, Canadian registration C-GDQH, was substantially damaged during an in-flight collision with terrain in Kapuskasing, Ontario, Canada. The pilot and 2 passengers sustained fatal…NTSB WPR12CA025Accident · No injuriesData collectionFinal reportCessna 172K · Florence, MTThe pilot's failure to maintain clearance from a power line during a low-level flight along a river. Contributing to the accident was the pilot's decision to fly at a low altitude.NTSB ERA12FA052Accident · 2 fatalField investigationFinal reportInterplane S R O Skyboy · Miami, FLThe pilot’s failure to maintain control of the airplane while flying at low speed, which resulted in a subsequent aerodynamic stall, spin, and impact with terrain. Contributing to the outcome of the accident was the pilot’s decision to operate the airplane…NTSB WPR12LA022Accident · Minor injuriesLimited investigationFinal reportMcdonnell Douglas 500D · Colusa, CAA total loss of engine power while maneuvering at low altitude for reasons that could not be determined because postaccident examinations did not reveal any anomalies that would have precluded normal operation. Contributing to the accident severity was the…NTSB CEN12FA043Accident · Serious injuriesField investigationFinal reportHawker Beechcraft 76 · Fort Worth, TXThe flight instructor's failure to maintain airspeed above the air minimum control airspeed (Vmca), which resulted in a loss of control and impact with terrain. Contributing to the accident was the instructor's failure to follow published procedures to…NTSB ERA12CA050Accident · No injuriesData collectionFinal reportAir Tractor AT-301 · McAlpin, FLThe pilot's misjudgment of the airplane's distance from known transmission lines.NTSB CEN12FA037Accident · 1 fatalField investigationFinal reportCirrus Design SR22T · Carrollton, TXThe pilot's failure to adequately preflight the airplane prior to departure, which resulted in a loss of engine power due to fuel exhaustion.NTSB ERA12FA018Accident · 1 fatalField investigationFinal reportBerger Michael A Waiex · Washington, GAThe in-flight failure of the aircraft’s Y-tail attachment structure during maneuvering flight due to overload. Contributing to the accident was, the kit manufacturer’s use of 14 CFR Part 23, Appendix A design guidelines intended for a conventional tail…NTSB ERA12LA045Accident · No injuriesLimited investigationFinal reportGraff Wilbur C Bearhawk · Woodrow, WVThe pilot’s delayed use of carburetor heat while operating in conditions conducive to carburetor icing.NTSB CEN12FA025Accident · No injuriesField investigationFinal reportPiper PA-28R-200 · Watertown, WIThe separation of the number 2 connecting rod from the crankshaft for reasons that could not be determined during postaccident metallurgical examination, which ultimately resulted in a total loss of engine power.NTSB CEN12CA030Accident · No injuriesData collectionFinal reportCessna 172N · Covington, LAThe pilot’s failure to maintain adequate airspeed during a banner drop, resulting in an aerodynamic stall.NTSB CEN12WA033Accident · 2 fatalForeign investigationDiamond DA20 · Amurrio, SpainOn October 14, 2011, at 1040 universal coordinated time, a Diamond DA20-C1 airplane, EC-KDS, sustained substantial damage when it impacted terrain near Amurrio, Spain. The two crewmembers sustained fatal injuries. The accident investigation is under the…NTSB WPR12CA005Accident · No injuriesData collectionFinal reportCombs Dale B RV-4 · Madera, CAThe third airplane pilot’s failure to maintain visual contact with the second airplane during the formation flight.NTSB ERA12FA008Accident · 1 fatalField investigationFinal reportAviat A-1 · Moyock, NCThe operation of the airplane by a non-certificated pilot, and his failure to maintain adequate airspeed while maneuvering, which resulted in an aerodynamic stall.NTSB WPR11FA474Accident · 1 fatalField investigationFinal reportPoe G L/Poe S Y 540 · Chualar, CAThe pilot’s incapacitation due either to g-induced loss of consciousness alone or in combination with a cardiac arrhythmia. Contributing to the accident was the pilot’s use of several medications.NTSB ERA11FA512Accident · 1 fatalField investigationFinal reportHeronimus Kevin A Glasair III · Falls of Rough, KYThe failure of the propeller power speed reduction unit, which resulted in a loss of engine power at low altitude.NTSB CEN11CA667Accident · Minor injuriesData collectionFinal reportTompkins Tandem Rocket · Lemars, IAThe pilot's failure to maintain aircraft control while maneuvering.NTSB WPR11CA467Accident · No injuriesData collectionFinal reportRobinson R22 Beta · Douglas, WYThe pilot's failure to maintain yaw control of the helicopter while hover taxiing in gusty wind conditions.NTSB ERA11LA503Accident · 1 fatalLimited investigationFinal reportCessna 120 · Cordele, GAThe pilot's inadequate fuel planning, which resulted in a total loss of engine power due to fuel exhaustion.NTSB CEN11FA666Accident · 2 fatalField investigationFinal reportRobinson Helicopter R44 · Curren, MIThe non-instrument-rated pilot's decision to continue visual flight into instrument meteorological conditions, which resulted in controlled flight into trees and the ground. Contributing to the accident was the pilot's impairment from multiple drugs.NTSB ANC11TA110Accident · No injuriesFinal reportBell 206 B3 · Seward, AKThe pilot's failure to maintain clearance from snow-covered terrain during hover in deteriorating weather and flat light conditions, which resulted in a tail rotor strike.NTSB WPR11LA461Accident · Serious injuriesLimited investigationFinal reportBunker RLV-1 · Wells, NVThe pilot did not maintain clearance from terrain while maneuvering. Contributing to the accident was the pilot’s inadequate in-flight planning.NTSB WPR11LA459Accident · No injuriesLimited investigationFinal reportMcarthur Steen Skybolt · Greenleaf, IDStructural failure of the upper left wing during aerobatic flight.NTSB WPR11LA458Accident · Serious injuriesLimited investigationFinal reportAviat Pitts S-2B · Redlands, CAThe pilot’s failure to maintain airspeed while maneuvering, which resulted in an aerodynamic stall. Contributing to the accident was the pilot’s impairment from alcohol.NTSB CEN11FA652Accident · 2 fatalField investigationFinal reportConcannon Milton Radial ROC · Socorro, NMThe pilot's failure to maintain adequate airspeed during the visual approach to the runway, which resulted in an aerodynamic stall. Contributing to the accident were the pilot’s lack of experience in the airplane make and model and the possible sedating…NTSB ERA11FA495Accident · 1 fatalField investigationFinal reportNorth American T-28C · Martinsburg, WVThe pilot's impairment or incapacitation that occurred during a low-altitude aerobatic maneuver due to complications from a recent heart attack, resulting in his inability to maintain control of the airplane. Contributing to the accident was the Federal…