NTSB investigations, 2001
219 cases where the phase of flight was Initial climb.
Cases per year
| 1962 | 3 |
|---|---|
| 1963 | 4 |
| 1964 | 505 |
| 1965 | 555 |
| 1966 | 582 |
| 1967 | 587 |
| 1968 | 577 |
| 1969 | 582 |
| 1970 | 552 |
| 1971 | 541 |
| 1972 | 507 |
| 1973 | 482 |
| 1974 | 556 |
| 1975 | 543 |
| 1976 | 521 |
| 1977 | 556 |
| 1978 | 566 |
| 1979 | 502 |
| 1980 | 505 |
| 1981 | 499 |
| 1982 | 490 |
| 1983 | 507 |
| 1984 | 466 |
| 1985 | 418 |
| 1986 | 394 |
| 1987 | 380 |
| 1988 | 368 |
| 1989 | 348 |
| 1990 | 351 |
| 1991 | 324 |
| 1992 | 306 |
| 1993 | 307 |
| 1994 | 292 |
| 1995 | 289 |
| 1996 | 244 |
| 1997 | 272 |
| 1998 | 266 |
| 1999 | 239 |
| 2000 | 221 |
| 2001 | 219 |
| 2002 | 200 |
| 2003 | 227 |
| 2004 | 210 |
| 2005 | 204 |
| 2006 | 180 |
| 2007 | 202 |
| 2008 | 212 |
| 2009 | 173 |
| 2010 | 162 |
| 2011 | 177 |
| 2012 | 193 |
| 2013 | 122 |
| 2014 | 130 |
| 2015 | 165 |
| 2016 | 141 |
| 2017 | 149 |
| 2018 | 155 |
| 2019 | 146 |
| 2020 | 112 |
| 2021 | 166 |
| 2022 | 161 |
| 2023 | 163 |
| 2024 | 143 |
| 2025 | 135 |
| 2026 | 104 |
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\") = 2001
AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 350)
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") = 2001
AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 350)
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 ANC02LA008Accident · No injuriesLimited investigationFinal reportBoeing 747-128 · Anchorage, AKThe flight crew's inadequate preflight planning, and failure to calculate the airplane weight and balance prior to departure.NTSB MIA02LA046Accident · Serious injuriesLimited investigationFinal reportCessna 172M · New Smyrna Bch, FLthe failure of the pilot to maintain airspeed, during initial climb out, which resulted in an inadvertent stall, and subsequent impact with the terrain.NTSB FTW02LA057Accident · Serious injuriesLimited investigationFinal reportSchleicher ASW-24E · El Paso, TXthe pilot's failure to maintain minimum airspeed for flight, resulting in an inadvertent stall while maneuvering. A contributing factor was the failure of the tow rope.NTSB ANC02IA007Incident · No injuriesIncident investigationFinal reportDouglas DC-8-71F · Anchorage, AKThe asymmetrical activation of the left wing spoiler due to a broken retraction cable during takeoff. A factor associated with the incident was the operator's inadequate inspection of the cable.NTSB CHI02LA053Accident · No injuriesLimited investigationFinal reportCessna 172L · Reedsburg, WIThe pilot inadvertently released the seat adjustment mechanism which resulted in the seat sliding back during takeoff, and his subsequent failure to maintain control of the airplane. A factor associated with the accident was the runway light control box,…NTSB LAX02FA041Accident · 2 fatalField investigationFinal reportCessna 182E · Prescott, AZthe pilot's failure to adequately deice the airplane prior to takeoff, which resulted in the airplane's degraded aerodynamic and climb performance capability, failure to maintain an adequate airspeed, and a stall/spin. Contributing factors were the pilot's…NTSB CHI02LA046Accident · No injuriesLimited investigationFinal reportMiller Lancair 235 · Tecumseh, MIThe pilot's failure to maintain aircraft control during the takeoff. Factors relating to the accident were the crosswind and the wind gusts.NTSB DEN02LA013Accident · Serious injuriesLimited investigationFinal reportBell 206B · Bryce, UTloss of engine power for reasons undetermined. Contributing factors were the low airspeed and altitude at which to perform an autorotation.NTSB MIA02LA036Accident · Serious injuriesLimited investigationFinal reportGrumman American AA-1C · Pompano Beach, FLThe failure of the pilot-in-command to maintain airspeed (Vs), while maneuvering for an emergency landing, resulting in an inadvertent stall and subsequent in-flight collision with terrain. A contributing factor in the accident was the loss of engine power…NTSB FTW02LA043Accident · No injuriesLimited investigationFinal reportEiriavion PIK 20D · Alamogordo, NMThe pilot's failure to maintain altitude and clearance with small trees during a precautionary landing.NTSB IAD02FA018Accident · 2 fatalField investigationFinal reportGates Learjet 25B · Pittsburgh, PAThe (undetermined) pilot-at-the-controls' early, and over rotation of the airplane's nose during the takeoff attempt, and his failure to maintain directional control. Also causal, was the captain's inadequate remedial action, both during the takeoff attempt…NTSB FTW02LA041Accident · Serious injuriesLimited investigationFinal reportGlobe GC-1B · Marion, TXthe pilot's inadvertent stall during takeoff, which resulted in a loss of control and the airplane colliding with a fence and a tree. A contributing factor was his lack of experience in the make and model of aircraft.NTSB MIA02LA019Accident · Minor injuriesLimited investigationFinal reportPiper PA-28-181 · Deland, FLThe loss of engine power during takeoff/initial climb due to undetermined reasons.NTSB FTW02FA037Accident · 1 fatalField investigationFinal reportGrumman American AA-1B · Patterson, LAThe pilot's mismanagement of fuel with the positioning of the fuel selector in the off position and his failure to maintain airspeed resulting in fuel starvation, and the airplane entering into a stall.NTSB MIA02LA022Accident · 1 fatalLimited investigationFinal reportRobert N. Gilmore Rans S-10 · Oneonta, ALThe failure of the pilot to maintain airspeed following loss of engine power resulting in the airplane stalling and entering a spin from which it crashed. Factors in the accident was improper repair of the front cylinder intake manifold seal by the pilot…NTSB DEN02LA012Accident · Minor injuriesLimited investigationFinal reportCessna T210N · Montrose, COthe loss of engine power during initial climb for undetermined reason. A factor was the lack of suitable terrain for a forced landing.NTSB SEA02LA013Accident · No injuriesLimited investigationFinal reportPiper PA-18-150 · Brewster, WAThe magneto was inadvertently switched off by the pilot during the climb. A tree was a factor.NTSB DCA02MA001Accident · 265 fatalClass 1 · MajorFinal reportAirbus Industrie A300B4-605R · Belle Harbor, NYthe in-flight separation of the vertical stabilizer as a result of the loads beyond ultimate design that were created by the first officer's unnecessary and excessive rudder pedal inputs. Contributing to these rudder pedal inputs were characteristics of the…NTSB ATL02LA013Accident · No injuriesLimited investigationFinal reportCessna 172S · Sarasota, FLThe operators failure to ensure adequate training had been provided to the student pilot in autopilot operations, and the student pilot's failure to comply/ follow written instructions (Federal Regulations/172 Skyhawk Information Manual) pertaining to the…NTSB ATL02FA010Accident · 1 fatalField investigationFinal reportCessna 310Q · Winston Salem, NCImproper installation of the elevator trim tab control rod by maintenance personnel which allowed the control rod to disconnect and jam in the full up position (elevator full down) while in-flight. This resulted in a loss of directional control and subsequent…NTSB DEN02LA007Accident · No injuriesLimited investigationFinal reportPiper PA-28-235 · Paonia, COimpact with a deer during initial climb immediately following rotation, resulting in the separation of the left main landing gear assembly.NTSB FTW02LA029Accident · No injuriesLimited investigationFinal reportLandoll Vans RV 3-A · Denton, TXthe pilot's failure to perform a preflight inspection, which resulted in a loss of total engine power due to oil starvation. A contributing factor was the lack of suitable training for the forced landing.NTSB ATL02FA008Accident · 3 fatalField investigationFinal reportPiper PA-28-181 · McEwen, TNThe pilot initiated a VFR flight into known IMC conditions which resulted in a loss of control of the airplane due to spatial disorientation. Factors were the low ceilings.NTSB NYC02LA018Accident · No injuriesLimited investigationFinal reportAmerican AA-1 · Batavia, OHMalfunction of an exhaust valve. A factor was the pilot/owner's failure to comply with the engine manufacturer's service instructions.NTSB FTW02LA022Accident · No injuriesLimited investigationFinal reportBellanca 17-30A · Clarendon, TXthe loss of engine power for undetermined reasons. Contributing factors to the accident were the dark night light conditions and the lack of suitable terrain for the forced landing.NTSB ANC02LA006Accident · No injuriesLimited investigationFinal reportCessna 207A · Kobuk, AKThe pilot's failure to maintain adequate clearance from objects during the initial climb after takeoff, and subsequent collision with a tree. A factor was the presence of trees along the runway.NTSB NYC02FA012Accident · 3 fatalField investigationFinal reportCessna 172 · South Hero, VTThe pilot's failure to maintain aircraft control during the takeoff. Factors in this accident were wind gusts and the airplane's high gross weight condition.NTSB MIA02LA010Accident · No injuriesLimited investigationFinal reportBeech 58 · Gulfport, MSThe failure of the pilot to use the checklist resulting in a gear-up landing. Contributing factors in the accident were: 1) The inoperative landing gear warning system, 2) Inadequate preflight of the airplane by the pilot for his failure to assure that the…NTSB LAX02IA002Incident · No injuriesIncident investigationFinal reportBoeing 737-700 · Santa Ana, CAThe failure of the stabilizer electric trim motor as a result of internal mechanical seizure.NTSB LAX02LA001Accident · No injuriesLimited investigationFinal reportAero Commander 500 · Petaluma, CAThe pilot's inadvertent (dark, nighttime) VFR flight into instrument meteorological conditions and subsequent loss of altitude control. A factor in the accident was the pilot's inadequate preflight weather evaluation.NTSB MIA02LA006Accident · No injuriesLimited investigationFinal reportCessna 170 · Bennettsville, SCThe blockage of the fuel vent and also the collapsed fuel supply line resulting in the total loss of engine power due to fuel starvation.NTSB SEA02FA002Accident · 3 fatalField investigationFinal reportCessna 172N · Decatur Island, WAThe pilot's failure to maintain airspeed during a low altitude turn, resulting in a stall. The pilot exceeding the aircraft's maximum gross takeoff weight was a factor.NTSB NYC02LA001Accident · Serious injuriesLimited investigationFinal reportClark T Bird II · Elberon, VAA partial power loss for undetermined reasons.NTSB FTW02LA001Accident · No injuriesLimited investigationFinal reportBeech M35 · Denton, TXthe loss of engine power for an undetermined reason, which resulted in a forced landing. A contributing factor was the lack of suitable terrain for the forced landing.NTSB FTW01LA212Accident · No injuriesLimited investigationFinal reportBeech 70 · College Station, TXthe loss of right engine power during takeoff initial climb for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.NTSB ANC01LA149Accident · No injuriesLimited investigationFinal reportPiper PA-22 · Skwentna, AKA loss of engine power due to an undetermined reason.NTSB ANC01LA147Accident · No injuriesLimited investigationFinal reportCessna 206 · Galena, AKThe pilot's inadequate preflight planning and preparation for takeoff from an off-airport, short field site. Factors associated with the accident are a variable wind, and the pilot's inadequate weather evaluation.NTSB NYC01LA229Accident · No injuriesLimited investigationFinal reportBoeing E75N1 · Rhinebeck, NYA partial power loss for undetermined reasons.NTSB CHI01LA328Accident · Minor injuriesLimited investigationFinal reportCessna 150H · Lebanon, INThe unsuitable terrain for landing encountered by the pilot. Factors were the carburetor icing conditions, the carburetor ice, and the bean crop.NTSB LAX01LA295Accident · Minor injuriesLimited investigationFinal reportCessna 172 · Skull Valley, AZthe loss of engine power during takeoff for undetermined reasons. A contributing factor was the lack of suitable terrain for the ensuing emergency landing.NTSB FTW01LA208Accident · No injuriesLimited investigationFinal reportPiper PA-32R-301 · Waco, TXthe mechanic's failure to perform an airworthiness directive, which resulted in the loss of engine oil through a partially failed oil filter converter plate gasket, and subsequent engine failure during takeoff climb. A contributing factor was the lack of…NTSB LAX01FA302Accident · 1 fatalField investigationFinal reportPiper PA-23-150 · Chico, CAThe loss of right engine power for undetermined reasons, and the pilot's failure to maintain control of the aircraft due to his improper single engine emergency procedures.NTSB ANC01LA140Accident · Serious injuriesLimited investigationFinal reportRans S-7 · Chugiak, AKThe pilot's inadvertent stall of the airplane during takeoff.NTSB ANC01LA135Accident · Serious injuriesLimited investigationFinal reportColburn Murphy Rebel · Kotzebue, AKThe pilot's inadequate compensation for wind conditions during takeoff. Factors associated with the accident were variable winds, and trees.NTSB CHI01LA313Accident · Serious injuriesLimited investigationFinal reportGelasi Aircamper · Bloomfield, WIAircraft control not possible due to the inadvertent control interference by the front seat passenger. Factors to the accident were the restricted control stick movement and the encountered stall.NTSB CHI01LA310Accident · No injuriesLimited investigationFinal reportMooney M20K · Croswell, MIThe pilots failure to abort the takeoff. Factors were the pole and the trees.NTSB CHI01LA300Accident · No injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Atlantic, IAThe loss of engine power for undetermined reasons during the takeoff and initial climb, and the unsuitable terrain encountered during the forced landing. Factors relating to this accident were the corn crop and the low altitude.NTSB SEA01LA164Accident · Minor injuriesLimited investigationFinal reportTaylorcraft BC12-D · Winston, ORThe pilot's failure to maintain clearance from a fence during the initial takeoff. A fence was a factor.NTSB LAX01LA298Accident · No injuriesLimited investigationFinal reportSparke Air Command 582 Dual · Gerlach, NVThe pilot's inability to maintain altitude because of the gyrocopter's inadequatly designed performance capability.NTSB LAX01LA296Accident · No injuriesLimited investigationFinal reportFunk C · Merced, CAThe pilot's improper modification of the airplane when he switched a nonvented fuel cap to the fuselage tank. A factor was the inadequate annual inspection.