NTSB investigations, 1996
511 cases where the phase of flight was Enroute.
Cases per year
| 1962 | 18 |
|---|---|
| 1963 | 28 |
| 1964 | 703 |
| 1965 | 750 |
| 1966 | 856 |
| 1967 | 893 |
| 1968 | 881 |
| 1969 | 995 |
| 1970 | 996 |
| 1971 | 941 |
| 1972 | 894 |
| 1973 | 935 |
| 1974 | 968 |
| 1975 | 977 |
| 1976 | 927 |
| 1977 | 936 |
| 1978 | 1,018 |
| 1979 | 968 |
| 1980 | 873 |
| 1981 | 881 |
| 1982 | 786 |
| 1983 | 734 |
| 1984 | 747 |
| 1985 | 704 |
| 1986 | 693 |
| 1987 | 616 |
| 1988 | 656 |
| 1989 | 590 |
| 1990 | 548 |
| 1991 | 574 |
| 1992 | 542 |
| 1993 | 533 |
| 1994 | 498 |
| 1995 | 506 |
| 1996 | 511 |
| 1997 | 466 |
| 1998 | 467 |
| 1999 | 452 |
| 2000 | 451 |
| 2001 | 396 |
| 2002 | 407 |
| 2003 | 415 |
| 2004 | 380 |
| 2005 | 390 |
| 2006 | 325 |
| 2007 | 353 |
| 2008 | 256 |
| 2009 | 309 |
| 2010 | 269 |
| 2011 | 287 |
| 2012 | 309 |
| 2013 | 280 |
| 2014 | 258 |
| 2015 | 295 |
| 2016 | 324 |
| 2017 | 275 |
| 2018 | 340 |
| 2019 | 348 |
| 2020 | 248 |
| 2021 | 323 |
| 2022 | 312 |
| 2023 | 322 |
| 2024 | 368 |
| 2025 | 348 |
| 2026 | 232 |
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\") = 1996
AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 400)
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") = 1996
AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 400)
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 FTW97LA077Accident · No injuriesLimited investigationFinal reportPiper PA-28R-201T · Raton, NMfailure of the exhaust rocker arm retaining studs due to over torquing of the attachment bolts by maintenance personnel during installation. A factor was the lack of suitable terrain for the forced landing.NTSB MIA97LA045Accident · No injuriesLimited investigationFinal reportIssoire-Aviation PIK-30 · Boynton Beach, FLfailure of the engine to restart for undetermined reason(s), after gliding (sailing) for about 3 hours, resulting in a forced landing in a swamp.NTSB ATL97FA029Accident · 2 fatalField investigationFinal reportMooney M20C · Roxboro, NCfailure of the pilot to maintain control of the airplane, due to spatial disorientation. Factors relating to the accident were: the pilot's use of an unapproved drug, low ceiling, restricted visibility (fog), and an undetermined anomaly with the vacuum system.NTSB MIA97FA047Accident · 2 fatalField investigationFinal reportChampion 7GCBC · Fort Lauderdale, FLIntentional aerobatics at too low an altitude that did not allow for recovery from an intentional maneuver. Contributing to the accident was the operation of the airplane at an overgross weight condition.NTSB FTW97FA073Accident · 2 fatalField investigationFinal reportCessna 210L · Brackettville, TXfailure of the pilot to maintain sufficient altitude and/or clearance from terrain, while on a cross-country flight at night. Factors relating to the accident were: darkness, the prevailing low ceilings, and mountainous/hilly terrain.NTSB CHI97LA046Accident · Serious injuriesLimited investigationFinal reportBellanca 17-30 · Hayes Center, NEinadequate fuel management by the pilot, which resulted in fuel starvation. The factors relating to the accident were: a fuel leak at the engine driven fuel pump, and the engine driven fuel pump pressure was too low.NTSB ATL97LA028Accident · No injuriesLimited investigationFinal reportMooney M20F · Daytona Beach, FLThe pilot's inadequate in-flight fuel consumption calculations, and the excessive flow of the fuel injector servo, that combined to result in fuel exhaustion.NTSB LAX97LA076Accident · Minor injuriesLimited investigationFinal reportTrickle TR-4 · Davis, CAThe fatigue fracture and separation of one rod end cap bolt. A factor in the accident was the nature of the terrain for the forced landing.NTSB LAX97LA072Accident · Serious injuriesLimited investigationFinal reportMcDonnell Douglas MD-83 · San Jose, CAThe flight's encounter with severe turbulence while the injured cabin crew was standing.NTSB LAX97LA071Accident · 2 fatalLimited investigationFinal reportFarhat RV6A · Julian, CAflight by the pilot into known adverse weather conditions, which resulted in the accumulation of airframe ice and an inability to maintain clearance (proper altitude) from mountainous terrain. Moderate to severe icing conditions in clouds, turbulence, and…NTSB LAX97FA070Accident · 4 fatalField investigationFinal reportPiper PA-23-250 · Lucerne Valley, CAthe pilot's failure to maintain an adequate airspeed after encountering turbulence, low level wind shear, and an open door.NTSB DCA97MA016Accident · 6 fatalClass 1 · MajorFinal reportDouglas DC-8-63F · Narrows, VAthe inappropriate control inputs applied by the flying pilot during a stall recovery attempt, the failure of the nonflying pilot-in-command to recognize, address, and correct these inappropriate control inputs, and the failure of ABX to establish a formal…NTSB ANC97LA015Accident · Serious injuriesLimited investigationFinal reportBoeing 737-400 · Yakutat, AKan in-flight encounter with unforecast severe clear air turbulence.NTSB NYC97LA035Accident · Minor injuriesLimited investigationFinal reportCessna T210M · Lexington, KYfailure of #5 exhaust valve and/or #5 exhaust valve guide, which resulted in a progressive engine failure (debris puncturing the #5 piston crown, exhaust gasses entering the crankcase, loss of oil through the breather system, oil exhaustion, and subsequent…NTSB NYC97LA032Accident · Minor injuriesLimited investigationFinal reportCessna 172RG · Stamford, CTinadequate preflight by the pilot, which resulted in fuel exhaustion, due to an inadequate fuel supply of fuel. Darkness and trees in the emergency landing area were related factors.NTSB FTW97LA070Accident · Serious injuriesLimited investigationFinal reportBritish Aerospace BAE 146-200A · Denver, COan inflight encounter with unreported and unanticipated clear air turbulence during landing descent.NTSB FTW97FA067Accident · 6 fatalField investigationFinal reportBeech A36 · Chacon, NMThe pilot's failure to maintain altitude and clearance from the high, mountainous terrain. Factors were; high wind, turbulence, and mountain wave conditions.NTSB SEA97LA039Accident · No injuriesLimited investigationFinal reportStinson 108-2 · Friday Harbor, WAfailure of the engine (powerplant) for undetermined reason(s). A factor relating to the accident include: being over water at the time of power failure.NTSB FTW97LA066Accident · No injuriesLimited investigationFinal reportCessna 210N · Kerrville, TXthe pilot's inadequate preflight planning/preparation, which resulted in fuel exhaustion due to an inadequate supply of fuel. A factor relating to the accident was: the lack of suitable terrain for a forced landing.NTSB CHI97LA050Accident · No injuriesLimited investigationFinal reportPiper PA-46 · Red Oak, IAthe pilot's inadequate preflight and failure to make a precautionary landing. Additional factors included oil starvation and the failed connecting rod and rod bearing.NTSB FTW97LA064Accident · Serious injuriesLimited investigationFinal reportCessna P210N · Muskogee, OKthe pilot's improper planning/decision and inaccurate fuel consumption calculations, which resulted in an inadequate supply of fuel, fuel exhaustion, and a subsequent forced landing at night. Darkness was a related factor.NTSB FTW97LA065Accident · No injuriesLimited investigationFinal reportCessna A188 · La Porte, TXloss of engine power for undetermined reason(s). A factor relating to the accident was: the lack of suitable terrain for a forced landing.NTSB IAD97LA033Accident · Serious injuriesLimited investigationFinal reportCessna 172B · Charleston, WVimproper planning/decision by the pilot, and his mismanagement of the fuel supply, which resulted in fuel exhaustion, loss of engine power, and a forced landing into wooded terrain.NTSB FTW97LA063Accident · No injuriesLimited investigationFinal reportErcoupe 415-D · Amarillo, TXfailure of the #1 exhaust valve, which resulted in loss of engine power and a forced landing on rough/uneven terrain. A factor relating to the accident was: the lack of suitable terrain for a forced landing.NTSB IAD97FA032Accident · 3 fatalField investigationFinal reportMbb BO-105CBS · Penn Yan, NYthe pilot's failure to maintain altitude/clearance from the terrain. Factors relating to the accident were: the pilot's diverted attention to the GPS, darkness, low ceiling, rising terrain, and high wind condition.NTSB MIA97LA036Accident · 1 fatalLimited investigationFinal reportBeech 18G · Roosevelt Roads, PRThe pilot's improper planning/decision concerning separation of the left engine cowling. Factors relating to the accident were: the pilot's failure to perform weight and balance calculations, and/or to ensure the airplane was loaded in accordance with company…NTSB CHI97IA041Incident · No injuriesIncident investigationFinal reportBoeing 757-225 · Terre Haute, INinadequate installation of electrical wiring for an audio entertainment system associated with Supplemental Type Certificate (STC) SA5537NM, and a subsequent short in the wiring. Factors relating to the accident were: inadequate design (installation…NTSB ATL97LA023Accident · Minor injuriesLimited investigationFinal reportPereyra Aventura II · Rockledge, FLThe loss of engine power for undetermined reasons.NTSB SEA97FA033Accident · 1 fatalField investigationFinal reportBeech B36TC · Jackson, WYfailure of the pilot to follow IFR procedures. High terrain, low ceiling, icing conditions, and a possible anomaly with the VOR were related factors.NTSB NYC97LA027Accident · No injuriesLimited investigationFinal reportLake LA-4 · Gallipolis, OHthe pilot's improper recovery from a bounced landing, and his failure to maintain directional control, which resulted in a collision with a hangar and parked aircraft. Factors relating to the accident were: the pilot's encounter with rain, sleet, snow, and…NTSB ATL97LA022Accident · Serious injuriesLimited investigationFinal reportCessna 421C · St. Petersburg, FLimproper installation of the new starter adapter by maintenance personnel.NTSB MIA97FA034Accident · 2 fatalField investigationFinal reportBeech D-45 · Poplarville, MSthe noninstrument-rated pilot's intentional operation of the airplane with known deficiencies in equipment (inoperative attitude indicator and directional gyro) with an estimated time of arrival after official twilight. Also, poor in-flight planning decision…NTSB LAX97FA067Accident · 1 fatalField investigationFinal reportBeech V35B · Lake Tahoe, CAthe pilot's intentional flight into adverse weather and improper in-flight planning and decision making.NTSB MIA97FA031Accident · 1 fatalField investigationFinal reportPiper PA32-300D · Reform, ALa complete loss of engine power due to a total failure of both magnetos, and the failure of the pilot-in-command to insure that the airplane was airworthy. The dark night and unsuitable terrain were factors.NTSB ANC97LA012Accident · No injuriesLimited investigationFinal reportPiper PA-31 · Nunapitchuk, AKthe pilot's inadequate compensation for the wind conditions and failure to maintain directional control during the landing. Factors associated with the accident were: the low fuel condition, which led to a single engine landing, and the crosswind condition.NTSB IAD97LA028Accident · No injuriesLimited investigationFinal reportHughes 269C · Mayfield, KYdisengagement of the main transmission aft pinion nut, allowing the tail rotor splined drive sleeve to disengage from the pinion, which resulted in loss of directional control and an emergency (autorotative) landing.NTSB IAD97LA027Accident · No injuriesLimited investigationFinal reportPiper PA-32-260 · Claverack, NYloss of engine power for undetermined reasons.NTSB NYC97FA025Accident · 1 fatalField investigationFinal reportPiper PA-32-260 · Felton, PAThe pilot's inadequate preflight planning and preparation, and his failure to refuel which resulted in fuel exhaustion and the subsequent collision with trees during the forced landing.NTSB MIA97LA033Accident · No injuriesLimited investigationFinal reportCessna 150H · Homerville, GAcarburetor ice, due to the pilot's improper use of carburetor heat, which resulted in a forced landing and impact with trees.NTSB CHI97LA036Accident · No injuriesLimited investigationFinal reportCessna 177 · Regan, NDthe pilot's intentional flight into adverse weather. Factors were clouds, the pilot's inadequate in-flight planning/decision making, his poor evaluation of the weather, and the encounter with unsuitable terrain for landing.NTSB NYC97LA024Accident · Serious injuriesLimited investigationFinal reportPiper PA-46-350P · Myerstown, PAfatigue failure of the connecting rod to crankshaft attachments, due to inadequate overhaul of the engine by the manufacturer, which resulted in a loss of engine power and a forced landing. Factors relating to the accident included the discharge of oil from…NTSB MIA97LA032Accident · Serious injuriesLimited investigationFinal reportPiper PA-28-180 · Sugarloaf Key, FLa complete loss of engine power due to a disconnected connecting rod cap.NTSB LAX97LA060Accident · No injuriesLimited investigationFinal reportPiper PA-32R-301T · Tusayan, AZFuel exhaustion due to the pilot's inadequate preflight planning and his miscalculation of the fuel required for the flight.NTSB NYC97LA023Accident · Serious injuriesLimited investigationFinal reportPiper PA-28-181 · Long Pond, PAThe pilot's inadequate preflight planning/preparation and improper inflight planning/decision, which resulted in fuel exhaustion and the loss of engine power, due to an inadequate supply of fuel. Darkness and trees in the emergency landing area were related…NTSB LAX97LA058Accident · Serious injuriesLimited investigationFinal reportCessna T210N · Scottsdale, AZdetonation/pre-ignition for unknown reason(s), which resulted in failure of the number two piston, loss of engine power, and a subsequent forced landing on rough/uneven desert terrain.NTSB FTW97FA051Accident · 3 fatalField investigationFinal reportEurocopter AS350B2 · High Island A20This case was modified 6/26/2006. The failure of the tail rotor pitch change link due to a fatigue fracture, which resulted in a loss of tail rotor control and separation of the aft tailboom.NTSB CHI97LA037Accident · No injuriesLimited investigationFinal reportCessna 150 · Bowbells, NDthe pilot's failure to lean the mixture control after applying carburetor heat as the pilot's operating handbook states should be done. The carburetor icing conditions and the terrain were factors.NTSB ATL97LA027Accident · No injuriesLimited investigationFinal reportBeech 35 · Lafayette, GAfailure of maintenance personnel to balance the ruddervator assemblies after they had been reskinned and painted, which resulted in flutter and subsequent damage to the empennage.NTSB NYC97FA021Accident · 2 fatalField investigationFinal reportCessna 414 · Duo, WVThe pilot's inadequate inflight decision which resulted in VFR flight into instrument meteorological conditions and his failure to maintain adequate terrain clearance which resulted in an inflight collision with terrain. The low ceiling was a factor.NTSB NYC97FA019Accident · No injuriesField investigationFinal reportCessna 172N · Andover, MAfailure of the dual magneto, which resulted in a total loss of engine power, and subsequent collision with trees during a forced landing at night. Darkness and trees in the emergency landing area were related factors.