NTSB investigations, 2008
234 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\") = 2008
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") = 2008
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 ERA09CA120Accident · No injuriesData collectionFinal reportSchweizer 269C · Panama City, FLThe pilot's encounter with a loss of tail rotor effectiveness during an out-of-ground-effect hover.NTSB CEN09CA121Accident · No injuriesData collectionFinal reportCessna 150M · Greene, IAA loss of engine power due to undetermined reasons. Contributing to the accident was the rough, snow-covered terrain.NTSB CEN09LA113Accident · No injuriesLimited investigationFinal reportCotton Galen M Helicycle · Houston, TXThe loss of engine power during a hover landing which resulted in a hard landing.NTSB ERA09CA129Accident · No injuriesData collectionFinal reportBuckeye Dream Machine · Grant, FLThe pilot's failure to maintain clearance from the wire.NTSB ERA09LA107Accident · Minor injuriesLimited investigationFinal reportMoore David DM-1 · Salters, SCA hard landing following an autorotation that resulted from the separation of the red main rotor blade cap that led to the uncontrolled movement of the cyclic, autorotation and a hard landing.NTSB WPR09FA062Accident · 1 fatalField investigationFinal reportDiamond DA 20-C1 · Alamo Lake State Park, AZThe pilot's failure to maintain control during the performance of a maneuver and his failure to recover from the subsequent aerodynamic stall and spin.NTSB WPR09FA061Accident · 2 fatalField investigationFinal reportBeech V35 · Warner Springs, CAThe failure of the pilot to maintain clearance from terrain during a low altitude maneuver.NTSB ERA09FA092Accident · 1 fatalField investigationFinal reportCessna 172S · Goodland, FLThe pilot's failure to maintain aircraft control due to spatial disorientation. Contributing to the accident was the night light conditions.NTSB WPR09CA064Accident · No injuriesData collectionFinal reportAir Tractor AT-502 · Dinuba, CAThe failure of maintenance personnel to properly install the engine's Py line correctly, which resulted in the total loss of engine power and subsequent force landing. Contributing to the accident was the lack of suitable terrain.NTSB ERA09CA090Accident · No injuriesData collectionFinal reportBell OH-58C · Osceola County, FLThe pilot's misjudgment of altitude during low-altitude spraying operations, which resulted in an in-flight collision with water.NTSB ERA09FA087Accident · 2 fatalField investigationFinal reportErcoupe 415-D · Sebring, FLThe pilot's exceedance of the design stress limitations of the airplane.NTSB ERA09FA080Accident · 4 fatalField investigationFinal reportPiper PA-44-180 · Ft. Lauderdale, FLThe failure of both pilots to see and avoid the other aircraft.NTSB CEN09FA083Accident · 1 fatalField investigationFinal reportCessna 206H · Kalkaska, MIThe pilot's failure to maintain clearance from trees and terrain during the instrument-flight-rules flight. Contributing to the accident was the pilot's failure to comply with instrument flight procedures and his lack of recent instrument flight experience.NTSB CEN09CA092Accident · No injuriesData collectionFinal reportCessna 150 · Auxvasse, MOthe pilot's improper engine recovery procedures after a power-off stall which resulted in a loss of engine power. Contributing factors were the pilot's improper off-field landing procedures, and the lack of suitable terrain for the forced landing.NTSB WPR09WA250Accident · 1 fatalForeign investigationMcdonnell Douglas 369 · Murray Bridge, AustraliaOn November 19, 2008, about 1115 Australian central daylight-saving time, a pilot and two linesmen were operating a McDonnell Douglas 369D helicopter, Australian registry VH-PLJ, to test a high-voltage power line between Mannum and Mobilong, SA. While…NTSB CEN09TA060Accident · 1 fatalFinal reportBell OH-58C · Quitman, ARThe pilot’s failure to execute a proper autorotation during a forced landing after a loss of rotor rpm for undetermined reasons.NTSB ANC09LA012Accident · Minor injuriesLimited investigationFinal reportCessna 207 · Napaskiak, AKThe pilot's continued flight into adverse weather and icing conditions, and his failure to maintain sufficient airspeed to avoid a stall, resulting in a loss of control and in-flight collision with terrain while on an approach to land.NTSB WPR09FA038Accident · 3 fatalField investigationFinal reportPiper PA-32-260 · Sedona, AZThe partial loss of engine power while maneuvering for undetermined reasons.NTSB ERA09LA051Accident · Serious injuriesLimited investigationFinal reportRobinson Helicopter R44 · San Juan, PRThe detachment of the forward left servo control tube upper rod end attachment bolt during a hover due to separation of its retaining nut for undetermined reasons.NTSB CEN09LA054Accident · 1 fatalLimited investigationFinal reportCessna 177RG · Mena, ARThe pilot's failure to maintain clearance from rising terrain. Contributing to the accident was the pilot's continued flight into deteriorating weather conditions.NTSB ERA09CA042Accident · Minor injuriesData collectionFinal reportSundt Daniel N Rotorway Exec 162-F · West Chester, PAThe pilot's failure to maintain an adequate clearance above terrain while performing a pedal turn.NTSB WPR09CA030Accident · No injuriesData collectionFinal reportPiper PA-38-112 · Friant, CAThe student pilot's failure to execute a go-around in timely manner, which resulted in a collision with terrain. Also causal was the instructor's inadequate supervision of the flight and delayed remedial actions.NTSB WPR09LA028Accident · Minor injuriesLimited investigationFinal reportHiller UH-12E · Powder River, WYA flight control system malfunction while the helicopter was maneuvering at low altitude due to the failure/separation of the rotor blade control tube.NTSB ERA09LA031Accident · Serious injuriesLimited investigationFinal reportHughes 369D · Carroll Township, PAA total loss of engine power due to the improper assembly of the compressor discharge tubes to the combustion liner.NTSB CEN09FA043Accident · 1 fatalField investigationFinal reportCessna 175 · Mt. Dora, NMThe pilot's failure to maintain clearance from rising terrain for undetermined reasons.NTSB WPR09LA026Accident · 2 fatalLimited investigationFinal reportSilfvast Starduster TOO · Cedar Fort, UTThe pilot's failure to maintain an adequate airspeed and/or angle of attack to avoid a stall/spin during an aerobatic maneuver.NTSB CEN09CA037Accident · Serious injuriesData collectionFinal reportCessna R172E · Palo Pinto, TXThe pilot's intentional low-level flight and failure to maintain a visual lookout.NTSB ERA09FA027Accident · 1 fatalField investigationFinal reportPiper PA-30 · Selmer, TNThe pilot's failure to avoid terrain during night instrument meteorological conditions.NTSB CEN09LA023Accident · Serious injuriesLimited investigationFinal reportPiper PA-36-285 · Silverton, TXThe pilot's failure to maintain clearance from a transmission wire.NTSB CEN09FA012Accident · 2 fatalField investigationFinal reportBell 206 · Conroe, TXA loss of control for undetermined reasons.NTSB WPR09LA010Accident · Serious injuriesLimited investigationFinal reportBell 206B · Cougar, WAThe pilot's failure to maintain clearance between his external load and trees while maneuvering. Contributing to the accident were hilly terrain and trees.NTSB CEN09LA009Accident · 1 fatalLimited investigationFinal reportSproul 72K-TET · Rio Rancho, NMThe pilot's failure to maintain clearance from the power lines and the failure of either pilot to take any corrective action to avoid the collision.NTSB WPR09FA005Accident · 1 fatalField investigationFinal reportIniziative Industriali Italian SKY Arrow 600 · Malibu, CAThe pilot's failure to maintain aircraft control during a low-altitude maneuver. Contributing to the accident was the pilot's decision to perform a maneuver at a low altitude that was insufficient to allow him to recover from the loss of control. Contributing…NTSB WPR09LA004Accident · 1 fatalLimited investigationFinal reportBonde TF-51D · Sandy Valley, NVThe pilot's failure to maintain adequate airspeed while maneuvering to land, resulting in an aerodynamic stall. Contributing to the accident was the pilot's diverted attention while attempting to extend the landing gear.NTSB ERA09FA005Accident · Minor injuriesField investigationFinal reportCzech Aircraft Works Spol Sro Sportcruiser · Swainsboro, GAA loss of engine power due to carburetor icing as a result of the pilot's failure to use carburetor heat.NTSB ANC09FA003Accident · 1 fatalField investigationFinal reportAntonovich Anton B Challenger II · Chugiak, AKThe pilot’s failure to maintain control of the airplane while maneuvering, resulting in an in-flight collision with trees. Contributing to the accident was the pilot's lack of experience.NTSB DFW08FA237Accident · 2 fatalField investigationFinal reportCessna 320D · Collinsville, OKThe crews' failure to maintain adequate airspeed, which resulted in an aerodynamic stall close to the ground.NTSB DEN08LA163Accident · Minor injuriesLimited investigationFinal reportBeech C23 · Duncan, OKA total loss of engine power due to the fatigue failure of the engine crankshaft. Contributing to the accident were the improper maintenance to the engine crankshaft, improper reassembly of the engine, and failure to follow the engine manufacturer's overhaul…NTSB SEA08LA213Accident · Serious injuriesLimited investigationFinal reportBell 206B · Woods Landing-Jelm, WYThe pilot's encounter with a loss of tail rotor effectiveness event and his failure to maintain directional control while maneuvering. Contributing to the accident were the tailwind condition and the sloping, uneven terrain.NTSB LAX08WA305Accident · 1 fatalForeign investigationBell 206 · Douglas Camp, Papua New GuineaOn September 25, 2008, at 1012 local time, a Bell 206L3, Papua New Guinea (PNG) registry P2-HBC, crashed in a remote area near Douglas Camp (PNG) under unknown circumstances while reportedly performing long line operations. The helicopter was operated by Heli…NTSB LAX08CA297Accident · Minor injuriesData collectionFinal reportBellanca 7GCBC · American Fork, UTThe pilot's selection of an inadequate altitude to enter a box canyon, which resulted in an in-flight collision with terrain.NTSB DFW08FA233Accident · 2 fatalField investigationFinal reportPiper Aerostar PA-60-602P · Kremmling, COThe pilot’s failure to maintain aircraft control, resulting in an aerodynamic stall and spin.NTSB DFW08FA234Accident · No injuriesField investigationFinal reportCessna E162 · Douglas, KSThe airplane's inability to recover from an intentional spin, despite proper control inputs by the flight test pilot. Contributing to the accident was the failure of the airplane's ballistic parachute system to properly deploy.NTSB DFW08CA235Accident · No injuriesData collectionFinal reportGulfstream-Schweizer A/C Gulfstream · Patterson, LAThe loss of engine power due to fuel contamination. Contributing to the accident was the unsuitable muddy terrain for the forced landing.NTSB CHI08CA284Accident · No injuriesData collectionFinal reportFleet 2 · Leroy, OHThe loss of engine power due to the propeller hub failure during a low-level maneuver. Contributing to the accident were the trees encountered during the forced landing.NTSB NYC08LA318Accident · No injuriesLimited investigationFinal reportHiller UH-12E · Naruna, VAThe fatigue failure of a main rotor blade drag strut.NTSB SEA08LA200Accident · Serious injuriesLimited investigationFinal reportPiper PA-18-150 · Napavine, WAThe pilot's decision to make a low-altitude pass, and his failure to maintain clearance from all structures while maneuvering.NTSB SEA08CA199AccidentData collectionFinal reportCessna 177B · Truckee, CAThe pilot's improper decision to take off in a heavily loaded airplane under the ambient conditions that existed at the time. Contributing to the accident was the mountainous/hilly terrain, a high density altitude, gusty winds and downdrafts.NTSB ANC08LA122Accident · 1 fatalLimited investigationFinal reportPiper PA-18 · Talkeetna, AKThe pilot's failure to maintain sufficient airspeed to preclude a stall while maneuvering at a low altitude, resulting in an uncontrolled descent and collision with terrain.NTSB LAX08LA292Accident · No injuriesLimited investigationFinal reportCessna T210N · Oakland, CAA loss of engine power while maneuvering due to the disintegration of the number two main bearing, which resulted in a fracture of the crankshaft. Contributing to the accident was inadequate maintenance.