NTSB investigations, 1996
279 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 | 234 |
| 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 | 165 |
| 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\") = 1996
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") = 1996
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 MIA97LA052Accident · 1 fatalLimited investigationFinal reportSirocco Flying Club MJ 5 · Sanford, FLfailure of the pilot to maintain adequate airspeed, while maneuvering in the traffic pattern (crosswind) after takeoff, which resulted in an inadvertent stall, uncontrolled descent, and collision with terrain.NTSB LAX97LA079Accident · Minor injuriesLimited investigationFinal reportGrumman American AA-5A · Banning, CAThe pilot's intentional low flight in an area of foothills and canyons at an altitude insufficient to maintain clearance from obstacles.NTSB NYC97LA037Accident · 1 fatalLimited investigationFinal reportRichardson Kitfox 4 · Trenton, MEfailure of the pilot to maintain adequate airspeed while maneuvering after takeoff, which resulted in a stall/spin and an uncontrolled descent into terrain. The airplane's excessive gross weight was a related factor.NTSB MIA97LA048Accident · No injuriesLimited investigationFinal reportKelly Rans S-12 · Jacksonville, FLfailure of the pilot to maintain adequate airspeed, while maneuvering after takeoff, which resulted in a stall/mush and collision with trees.NTSB FTW97LA071Accident · No injuriesLimited investigationFinal reportCessna 210A · Peyton, COthe pilot's improper fuel management by failing to avoid a prolong uncoordinated turn or slip, which resulted in fuel starvation. Factors relating to the accident were: darkness, and the lack of (activated) runway lights.NTSB IAD97LA037Accident · No injuriesLimited investigationFinal reportRobinson R22 HP · Islip, NYThe students pilot's failure to maintain control of the helicopter and the instructor's inadequate supervision of the flight.NTSB SEA97LA038Accident · No injuriesLimited investigationFinal reportBeech BE-77 · Spokane, WAThe failure of the pilots of both airplanes to see and avoid each other. A factor contributing to the accident was the Cessna's pilot diverted attention.NTSB LAX97LA068Accident · Minor injuriesLimited investigationFinal reportRobinson R22 Beta · Lakeport, CAinadequate supervision by the flight instructor (CFI), and his delayed corrective action to the student pilot's abrupt control inputs, thereby allowing the main rotor blades to strike the ground. Factors relating to the accident were: the CFI's lack of…NTSB SEA97FA037Accident · 1 fatalField investigationFinal reportBellanca 8KCAB · Eagle Point, ORThe failure of the first pilot (flight instructor) to initiate proper aircraft control, and his failure to perform the adequate remedial action to recover from an intentional inverted spin.NTSB SEA97LA035Accident · 2 fatalLimited investigationFinal reportBell 47G · Pendleton, ORThe pilot-in-command's attempt to conduct visual flight into instrument meteorological conditions, and his failure to maintain altitude/clearance with hilly terrain. A contributing factor in the accident was the presence of fog.NTSB FTW97LA058Accident · No injuriesLimited investigationFinal reportAerospatiale AS350B · East Cameron 71failure of the pilot to maintain clearance from an object (crane/bucket). The gusty wind condition and proximity of the crane/bucket were related factors.NTSB NYC97LA026Accident · 1 fatalLimited investigationFinal reportParker Mustang · Port Norris, NJThe student pilot's failure to maintain adequate airspeed.NTSB ATL97FA092Accident · 2 fatalField investigationFinal reportCessna 182 · Charleston, SCThe noninstrument-rated pilot's failure to remain clear of instrument meteorological conditions which led to spatial disorientation and loss of aircraft control. A factor was the pilot's failure to obtain a weather briefing.NTSB MIA97LA035Accident · No injuriesLimited investigationFinal reportHoster/Volmer VJ22 (Sportsman) · Seminole, FLinadequate maintenance/inspection of the airplane by the pilot/owner, and fuel contamination that resulted in fuel starvation.NTSB SEA97LA036Accident · 2 fatalLimited investigationFinal reportPiper PA18-135 · Cohagen, MTThe pilot's failure to maintain airspeed. Factors were the intentional flight at a low altitude and the over gross condition of the airplane.NTSB LAX97FA065Accident · 2 fatalField investigationFinal reportOpperman Lancair IV-P · Suisun City, CAIn-flight loss of control for an undetermined reason.NTSB ATL97FA021Accident · 3 fatalField investigationFinal reportBellanca 17-31ATC · Fitzgerald, GAA loss of engine power due to the blockage of the intake manifold of the induction air system, by the broken alternate air door, and the loss of aircraft control for undetermined reasons.NTSB ANC97FA009Accident · 2 fatalField investigationFinal reportCessna 185 · Marshall, AKfailure of the pilot to maintain adequate airspeed, while maneuvering at low altitude, which resulted in an inadvertent stall and collision with the terrain.NTSB LAX97LA057Accident · Serious injuriesLimited investigationFinal reportBell 206B · Mcgregor Point, HIthe pilot's failure to maintain control of the aircraft and distance from the pole.NTSB MIA97LA028Accident · 1 fatalLimited investigationFinal reportNorth American T28B · Somerville, TNthe pilot misjudged his altitude/clearance above trees on terrain that was higher than the surrounding terrain, while performing an aerobatic maneuver.NTSB FTW97TA046Accident · No injuriesFinal reportAerospatiale AS-355-F1 · Taos, NMThe pilot's failure to maintain directional control. A factor was terrain induced turbulence.NTSB CHI97LA035Accident · No injuriesLimited investigationFinal reportCessna 150 · Chesterfield, MOthe pilot's failure to maintain an adequate visual lookout.NTSB MIA97LA027Accident · No injuriesLimited investigationFinal reportCessna A188B · Ocilla, GAthe pilot's inadequate fuel consumption calculations and failure to ensure the aircraft contained an adequate amount of fuel to complete the flight, which resulted in loss of engine power because of fuel exhaustion. Uneven terrain in the emergency landing…NTSB SEA97LA029Accident · Serious injuriesLimited investigationFinal reportBell 206B3 · Ballston, ORa loss of control for undetermined reasons.NTSB SEA97LA032Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Forks, WAfuel contamination, which resulted in loss of engine power. Factors relating to the accident included: improper servicing of the helicopter, and a lack of suitable terrain for an emergency landing due to the proximity of trees.NTSB SEA97FA027Accident · 1 fatalField investigationFinal reportCessna P210N · Boring, ORThe pilot's attempt to conduct visual flight into instrument meteorological conditions. A factor contributing to the accident was the presence of thick fog.NTSB CHI97FA025Accident · 3 fatalField investigationFinal reportEnstrom F28F · Gutherie, ILthe pilot's inadequate preflight preparation and not maintaining control of the helicopter during its rearward flight. A factor was the pilot's over-confidence in his personal ability.NTSB MIA97FA020Accident · 3 fatalField investigationFinal reportPiper PA-60-600 · New Bern, NCthe pilot's failure to maintain airspeed (VMC). Contributing to the accident was his lack of total experience in kind of aircraft.NTSB MIA97FA021Accident · 1 fatalField investigationFinal reportCessna TU206B · Jasper, GAcontinued flight by the pilot into adverse weather conditions, and his failure to maintain sufficient altitude or clearance from rising/mountainous terrain. The adverse weather and terrain conditions were related factors.NTSB SEA97LA025Accident · 1 fatalLimited investigationFinal reportGarlick TH-1L · Leavenworth, WAFatigue failure of the vertical stabilizer spar cap and subsequent loss of the rotorcraft's vertical stabilizer. Factors include inadequate inspection or trouble-shooting of the aircraft tail cone and vertical stabilizer at and after the time sheet-metal…NTSB IAD97LA015Accident · No injuriesLimited investigationFinal reportAyres Scorpion Executive · Union Vale, NYthe pilot's failure to maintain control of the helicopter, which resulted in a subsequent emergency landing and collision with a fence and a cherry picker (vehicle). A factor relating to the accident was: the student pilot's lack of experience in the type…NTSB FTW97LA034Accident · No injuriesLimited investigationFinal reportBell 206L-3 · Mancos, COfailure of the pilot to maintain clearance from the windsock, during a hover/pedal-turn after lift-off.NTSB LAX97LA030Accident · Minor injuriesLimited investigationFinal reportBell 206B · Supai, AZimproper routing of the external cargo hoist cable (over helicopter skid), which resulted in lateral imbalance and roll-over of the helicopter, as weight on the cable became effective.NTSB FTW97FA032Accident · 1 fatalField investigationFinal reportMooney M20J · San Leon, TXThe pilot's inadvertent stall and spin of the airplane. Factors were the pilot's lack of total experience in the make and model of airplane and the weather conditions.NTSB ATL97LA016Accident · No injuriesLimited investigationFinal reportCessna 188B · Ocilla, GAThe pilot's failure to adequately preflight and plan the fuel required for the flight.NTSB ATL97LA011Accident · No injuriesLimited investigationFinal reportGrumman G-164B · Abbeyville, ALThe loss of engine power for undetermined reasons.NTSB SEA97LA022Accident · 1 fatalLimited investigationFinal reportCollier Q200 · Estacada, ORinadequate maintenance adjustment by the owner/pilot/mechanic, by not using safety wire to secure the throttle arm clamping screw, which resulted in a loose clamping screw and rotation of the throttle arm with respect to the butterfly valve shaft. The lack of…NTSB CHI97LA016Accident · 1 fatalLimited investigationFinal reportHughes 369 · Vestaburg, MIfailure of the pilot to maintain clearance with the wires.NTSB NYC97FA011Accident · 2 fatalField investigationFinal reportYakovlev YAK-18T · Berlin, NJan inadequate preflight by unknown person(s), sometime before the flight, by failing to avoid a hydraulic lock (from oil seepage) in the #5 cylinder, which resulted in a bent connecting rod, subsequent failure of the #5 piston, and loss of engine power. Also…NTSB MIA97LA012Accident · Minor injuriesLimited investigationFinal reportAir Tractor 400 · Sylvester, GAWas the pilots intentional disregard for operating the engine contrary to the flight manuals for intentionally exceeding the maximum engine temperature, resulting in creep failure of one of the compressor turbine blades.NTSB FTW97LA019Accident · Serious injuriesLimited investigationFinal reportAir Tractor AT-502 · Throckmorton, TXfailure of the pilot to maintain clearance of a transmission wire during pullup from a swath run. The proximity of the transmission wire was a related factor. The installation of wire cutter equipment on the landing gear might have prevented or reduced the…NTSB LAX97LA014Accident · 1 fatalLimited investigationFinal reportCunningham Rotorway Exec · Mather, CAexcessive maneuvering by the pilot, which allowed the main rotor blades to contact and sever the tail rotor system and allowed mast bumping to occur.NTSB IAD97LA006Accident · 1 fatalLimited investigationFinal reportPiper J3C-65 · Springfield, OHfailure of the pilot to maintain obstacle clearance, while maneuvering at low altitudes. A related factor was the quartering tail wind.NTSB ATL97LA002Accident · Serious injuriesLimited investigationFinal reportBell UH-IB · Bennettsville, SCthe pilot's improper planning/decision, which resulted in fuel exhaustion and loss of engine power due to an inadequate supply of usable fuel. A factor relating to the accident was: an inoperative left boost pump, which increased the amount of unusable fuel…NTSB SEA97LA011Accident · 2 fatalLimited investigationFinal reportAero Vodochody Aero. Works L-29 · Tillamook, ORfailure of the pilot to maintain control of the aircraft, while maneuvering behind an F4F aircraft. The lack of altitude for a recovery was a related factor.NTSB SEA97GA008Accident · 2 fatalFinal reportPiper PA-18-150 · Holden, UTThe first pilot's failure to maintain adequate airspeed while maneuvering the airplane in close proximity to the ground. This subsequently led to an aerodynamic stall and uncontrolled descent into the ground. Factors contributing to the accident include the…NTSB CHI97LA004Accident · No injuriesLimited investigationFinal reportBell 47G-5 · Nunda, SDfailure of maintenance personnel to properly torque the six accessory drive bolts, which resulted in fatigue failure of the undertorqued bolts.NTSB CHI97LA003Accident · Serious injuriesLimited investigationFinal reportPiper PA-16 · Silver Lake, INfuel starvation due to an inadequate preflight and the pilot performed a low altitude maneuver which prevented him from selecting suitable terrain for landing. Additional factors included the loose fuel cap, fuel siphoning, and unreliable fuel gauges.NTSB NYC97LA001Accident · Serious injuriesLimited investigationFinal reportCessna 172 · Coudersport, PAthe pilot's improper in-flight planning/decision, and his failure to ensure that adequate airspeed would be maintained, while maneuvering at low altitude to photograph a residence. The rising terrain and lack of altitude were related factors.NTSB FTW97LA009Accident · Serious injuriesLimited investigationFinal reportYoung Cozy MK IV · Pueblo, COthe pilot/builder's improper design change which resulted in a loss of control following an intentional stall. A factor was an erroneous weight-and-balance calculation.