NTSB investigations, IL
408 cases where the phase of flight was Takeoff.
Cases per year
| 1964 | 14 |
|---|---|
| 1965 | 13 |
| 1966 | 19 |
| 1967 | 13 |
| 1968 | 14 |
| 1969 | 15 |
| 1970 | 7 |
| 1971 | 9 |
| 1972 | 7 |
| 1973 | 6 |
| 1974 | 14 |
| 1975 | 8 |
| 1976 | 7 |
| 1977 | 8 |
| 1978 | 14 |
| 1979 | 15 |
| 1980 | 12 |
| 1981 | 5 |
| 1982 | 10 |
| 1983 | 9 |
| 1984 | 8 |
| 1985 | 4 |
| 1986 | 7 |
| 1987 | 5 |
| 1988 | 7 |
| 1989 | 4 |
| 1990 | 3 |
| 1991 | 9 |
| 1992 | 3 |
| 1993 | 4 |
| 1994 | 6 |
| 1995 | 6 |
| 1996 | 2 |
| 1997 | 4 |
| 1998 | 3 |
| 1999 | 6 |
| 2000 | 4 |
| 2001 | 5 |
| 2002 | 8 |
| 2003 | 5 |
| 2004 | 4 |
| 2005 | 2 |
| 2006 | 6 |
| 2007 | 5 |
| 2008 | 7 |
| 2009 | 4 |
| 2010 | 4 |
| 2011 | 8 |
| 2012 | 2 |
| 2013 | 7 |
| 2014 | 2 |
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 4 |
| 2020 | 4 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 6 |
| 2026 | 4 |
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 c.\"eventStateOrRegion\" = 'IL' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 300)
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 c."eventStateOrRegion" = 'IL' AND c."eventCountry" = 'USA'
AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 300)
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 CEN27LA025AccidentLimited investigationInvestigation openHowell Mark R RV-8 · Geneseo, ILNTSB CEN26LA299Accident · No injuriesClass 4 · LimitedInvestigation openCessna 150M · Greenwood, ILNTSB CEN26LA186Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-28R-201 · West Chicago, ILThe pilot’s improper decision to attempt an intersection takeoff and delay to abort the takeoff which resulted in a subsequent runway excursion.NTSB CEN26LA083Accident · No injuriesClass 4 · LimitedFinal reportCessna 150 · Round Lake Park, ILThe student pilot’s failure to maintain directional control during a soft-field takeoff and the flight instructor’s delayed remedial action.NTSB CEN26LA081Accident · No injuriesClass 4 · LimitedFinal reportEla ELA10 · Morris, ILThe pilot’s failure obtain the proper rotor rpm before applying power for the takeoff roll which resulted in a loss of control.NTSB CEN25LA397Accident · No injuriesClass 4 · LimitedFinal reportDe Havilland DH82 · Harvard, ILThe pilot’s failure of the pilot to maintain directional control during takeoff which resulted in a collision with cornstalks. Contributing to the accident was the pilot’s partially obscured vision due to sun glare.NTSB CEN25LA340Accident · No injuriesClass 4 · LimitedFinal reportBurkhart Grob Flugzeugbau G102 Club Astir Iiib · Highland, ILThe pilot’s failure to maintain directional control during takeoff which resulted in a collision with a parked vehicle.NTSB CEN25LA313Accident · Minor injuriesClass 3 · LimitedPreliminary reportAir Tractor AT-502 · Lawrenceville, ILOn August 10, 2025, about 1321 central daylight time, an Air Tractor AT-502, was substantially damaged when it was involved in an accident near Lawrenceville, Illinois. The pilot sustained minor injuries. The airplane was operated as a Title 14 Code of…NTSB CEN25LA267Accident · Minor injuriesClass 4 · LimitedFinal reportAir Tractor AT-402B · Wyoming, ILThe pilot’s failure to attain a positive climb rate due to airplane’s improper takeoff configuration.NTSB CEN25LA177Accident · No injuriesClass 4 · LimitedFinal reportRolladen-Schneider LS-6B · Hinckley, ILThe pilot’s failure to maintain control of the glider during takeoff.NTSB CEN25LA022Accident · No injuriesClass 4 · LimitedFinal reportMagniflight M24 Orion · Valmeyer, ILThe pilot’s loss of control due to flight control interference by the passenger during takeoff.NTSB CEN23LA362Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-38-112 · Harvard, ILThe pilot’s failure to maintain directional control during takeoff that resulted in a runway excursion and an impact with the cornfield.NTSB CEN23LA216Accident · No injuriesClass 4 · LimitedFinal reportRemos G-3/600 · Sugar Grove, ILThe student pilot’s improper flight control inputs and the flight instructor’s delayed remedial action during takeoff, which resulted in a runway excursion and impact with terrain.NTSB CEN22LA393Accident · No injuriesClass 4 · LimitedFinal reportBoeing B75N1 · Harvard, ILThe pilot’s failure to maintain directional control during take-off, which resulted in a collision with crop and terrain.NTSB CEN22LA323Accident · No injuriesClass 3 · LimitedFinal reportBell 206B · Verona, ILA loss of rotor rpm for reasons that could not be determined.NTSB CEN22LA312Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT-502B · Decatur, ILFracture of the compressor turbine (CT) blades due to creep.NTSB CEN22LA122Accident · Serious injuriesClass 4 · LimitedFinal reportBell 206 · Eldorado, ILOverheating of two lithium batteries in the paramedic’s flight suit pocket resulting in an explosion and fire that seriously injured the paramedic as the helicopter was about to take off.NTSB CEN21LA095Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 · Morris, ILThe pilot's inadequate pedal application during liftoff with a tailwind, which resulted in a loss of yaw control and a subsequent impact with terrain.NTSB CEN21LA058Accident · No injuriesClass 4 · LimitedFinal reportTemco GC-1B · Waukegan, ILThe pilot’s failure to maintain directional control during takeoff with a crosswind that resulted in a ground loop and impact with terrain.NTSB CEN20LA352Accident · 1 fatalClass 3 · LimitedFinal reportBeech 200 · Rockford, ILThe pilot’s failure to maintain airplane control following a reduction of thrust in the left engine during takeoff. The reason for the reduction in thrust could not be determined based on the available evidence.NTSB CEN20LA219Accident · 1 fatalClass 3 · LimitedFinal reportFlight Design Ctls · Beecher, ILThe pilot’s decision to continue takeoff after a partial loss of engine power, and the pilot’s subsequent failure to control airplane pitch during a forced landing. Contributing to the accident was the partial loss of engine power for reasons that could not…NTSB CEN18LA299Accident · Serious injuriesLimited investigationFinal reportPiper PA28 · Columbia, ILThe airplane's inability to climb due to reduced engine power as a result of insufficient compression in all cylinders and fouled spark plugs in the No. 2 cylinder while operating near its maximum gross weight.NTSB GAA18CA430Accident · No injuriesData collectionFinal reportRobinson R44 · Okawville, ILThe pilot's improper preflight weight and balance calculation, which resulted in his operating the helicopter over its maximum gross takeoff weight and in its subsequent failure to climb.NTSB GAA18CA401Accident · No injuriesData collectionFinal reportGrumman G164 · Rochelle, ILThe pilot’s failure to move the power lever to the proper position before takeoff, which resulted in insufficient airspeed and a subsequent aerodynamic stall.NTSB CEN18LA092Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 172M · Centralia, ILThe pilot's exceedance of the airplane's critical angle of attack during takeoff, which resulted in an aerodynamic stall/spin.NTSB CEN18LA041Accident · No injuriesLimited investigationFinal reportCessna 182S · Bolingbrook, ILThe pilot’s failure to maintain directional control during takeoff.NTSB GAA17CA450Accident · Minor injuriesData collectionFinal reportRobinson Helicopter R44 · Dunlap, ILThe pilot’s failure to visually confirm that the helicopter was disconnected from hoses during refueling operations. Contributing to the accident was the pilot’s and ground crew’s misunderstanding of the hand signals.NTSB ENG17IA028Incident · No injuriesIncident investigationFinal reportBombardier CL 600 2C10 · Chicago, ILA Bombardier CRJ700 No. 1 engine failure caused by buckling of the combustion outer liner due to fatigue cracks. The liner buckling resulted in airflow disruption and reduced engine performance. The engine fuel control unit attempted to compensate for the…NTSB CEN17LA145Accident · No injuriesLimited investigationFinal reportCessna 120 · Columbia, ILThe partial loss of engine power due to carburetor icing.NTSB DCA17FA021Accident · Serious injuriesClass 1 · FieldFinal reportBoeing 767 · Chicago, ILThe failure of the high-pressure turbine (HPT) stage 2 disk, which severed the main engine fuel feed line and breached the right main wing fuel tank, releasing fuel that resulted in a fire on the right side of the airplane during the takeoff roll. The HPT…NTSB CEN16LA329Accident · Serious injuriesLimited investigationFinal reportCollins RV6A · Pekin, ILThe pilot's failure to latch the canopy before takeoff, and his subsequent distraction and failure to maintain control while attempting to close the open canopy, which resulted in an aerodynamic stall.NTSB GAA16CA313Accident · No injuriesData collectionFinal reportAir Tractor AT 802 · Cairo, ILThe pilot's failure to ensure that the tailwheel pin was in the locked position prior to the takeoff roll, resulting in a runway excursion, ground loop, and substantial damage.NTSB GAA16CA153Accident · Serious injuriesData collectionFinal reportBarnes Thomas A Vans · Bolingbrook, ILThe pilot's failure to maintain direction control during the takeoff roll, which resulted in runway excursion, collision with terrain, and nose over.NTSB CEN15LA335Accident · No injuriesLimited investigationFinal reportAir Tractor AT 502B · Virden, ILThe pilot’s failure to establish a proper airspeed during takeoff with the airplane near its maximum gross weight and with a quartering tailwind.NTSB OPS15IA011Incident · No injuriesIncident investigationFinal reportEmbraer EMB 145LR · Chicago, ILThe flight crew's failure to manage cockpit tasks during taxi resulting in a loss of situation awareness and subsequently taxiing past a required turn point and onto an active runway without clearance. Contributing to the runway incursion was the ground…NTSB CEN14CA464Accident · No injuriesData collectionFinal reportAir Tractor AT 502B · Colusa, ILThe pilot did not maintain control of the airplane during takeoff from a grass strip. Contributing was the airplane being loaded beyond its capability for the runway.NTSB CEN14LA349Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-502 · Carthage, ILThe airplane’s inability to climb out of ground effect, which resulted from the pilot using a lower power setting than needed for takeoff due to the mechanic’s installation of the wrong engine torque gauge.NTSB CEN13CA499Accident · No injuriesData collectionFinal reportBeech 35 · Wheeling, ILThe pilot’s loss of control due to the passenger’s inadvertent application of left rudder during the takeoff roll.NTSB CEN13CA495Accident · No injuriesData collectionFinal reportCessna 172 · Kankakee, ILThe airplane struck a deer during takeoff. Contributing to the accident was the perimeter fence being less than FAA's recommended 10 feet high.NTSB CEN13LA451Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-400A · Lombardville, ILThe pilot's failure to maintain airplane control during takeoff.NTSB CEN13LA426Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502 · Shannon, ILThe pilot’s inability to maintain an adequate climb rate after encountering a sudden wind shift during takeoff.NTSB DCA13WA062Incident · No injuriesForeign investigationAirbus · Chicago, ILThe BFU-DE of Germany has notified the NTSB of an accident involving an Airbus 330 that occurred on March 06, 2013 in Chicago, Illinois. The NTSB delegated the investigation to Germany and has appointed a U.S. Accredited Representative to assist the BFU-DE's…NTSB CEN13CA151Accident · No injuriesData collectionFinal reportCessna 172 · Murphysboro, ILThe pilot’s failure to maintain control of the airplane during the takeoff roll.NTSB CEN13CA142Accident · No injuriesData collectionFinal reportCessna 172S · Peoria, ILThe pilot’s inadvertent activation of the electric trim to the nose-down position, which resulted in the airplane being improperly configured for takeoff, and the flight instructor’s incorrect remedial action that allowed the airplane to porpoise.NTSB CEN12CA665Accident · Minor injuriesData collectionFinal reportCessna 182 · Tiskilwa, ILThe pilot’s loss of control while preforming a short field takeoff.NTSB CEN12LA577Accident · No injuriesLimited investigationFinal reportJones Kitfox III · Rockford, ILThe pilot's improper installation of a spark plug, which led to a partial loss of engine power after takeoff and the resultant forced landing.NTSB OPS12IA167Incident · No injuriesIncident investigationFinal reportLearjet 45 · Chicago, ILThe tower local controller did not ensure that the runway was clear of conflict before directing the B737 to cross the runway, and other air traffic control personnel did not effectively intervene when the separation between the two airplanes became…NTSB CEN12FA073Accident · 1 fatalField investigationFinal reportSkykits Savannah VGW · Plato Center, ILThe noncertificated pilot’s decision to fly the airplane without receiving any flight instruction in the airplane, which resulted in his failure to maintain sufficient airspeed during takeoff and the subsequent aerodynamic stall.NTSB CEN11FA500Accident · 3 fatalField investigationFinal reportPiper PA 46-350P · Rantoul, ILThe pilot did not maintain airplane control during takeoff with approaching thunderstorms. Contributing to the accident was the pilot's decision to depart into adverse weather conditions.NTSB CEN11CA486Accident · Minor injuriesData collectionFinal reportHamlin John D CH701 · Paxton, ILThe pilot's decision to takeoff with a tailwind in high density altitude conditions.