NTSB investigations, WA
328 cases where the phase of flight was Takeoff.
Cases per year
| 1964 | 3 |
|---|---|
| 1965 | 10 |
| 1966 | 13 |
| 1967 | 13 |
| 1968 | 7 |
| 1969 | 8 |
| 1970 | 8 |
| 1971 | 4 |
| 1972 | 10 |
| 1973 | 10 |
| 1974 | 6 |
| 1975 | 7 |
| 1976 | 8 |
| 1977 | 4 |
| 1978 | 9 |
| 1979 | 7 |
| 1980 | 7 |
| 1981 | 6 |
| 1982 | 3 |
| 1983 | 4 |
| 1984 | 2 |
| 1985 | 5 |
| 1986 | 5 |
| 1987 | 4 |
| 1988 | 2 |
| 1989 | 5 |
| 1990 | 4 |
| 1991 | 9 |
| 1992 | 3 |
| 1993 | 3 |
| 1994 | 3 |
| 1995 | 2 |
| 1996 | 5 |
| 1997 | 3 |
| 1998 | 2 |
| 1999 | 6 |
| 2000 | 6 |
| 2001 | 4 |
| 2002 | 4 |
| 2003 | 3 |
| 2004 | 4 |
| 2005 | 2 |
| 2006 | 6 |
| 2007 | 5 |
| 2008 | 3 |
| 2009 | 7 |
| 2010 | 8 |
| 2011 | 5 |
| 2012 | 4 |
| 2013 | 5 |
| 2014 | 7 |
| 2015 | 5 |
| 2016 | 3 |
| 2017 | 10 |
| 2018 | 6 |
| 2019 | 4 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 3 |
| 2025 | 7 |
| 2026 | 2 |
Where
Latest cases
Query with SQL
duckdb -csv -c "WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
current_codes AS (
SELECT e.case_mkey, TRY_CAST(e.\"tier1Number\" AS INTEGER) AS code,
row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e.\"isDefiningEvent\", false) DESC, e.position) AS n
FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
WHERE e.aircrafts_position = 1 AND e.\"tier1Number\" GLOB '[1-9][0-9]*'
AND (e.\"isDefiningEvent\" OR e.case_mkey IN (SELECT \"mKey\" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE \"isPre1982\"))
),
phases AS (
SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
FROM current_codes WHERE n = 1
UNION ALL
SELECT o.case_mkey, 'older', o.\"phaseOfFlightCode\", w.main
FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o.\"phaseOfFlightCode\"
WHERE o.aircrafts_position = 1 AND o.\"occurrenceNumber\" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
),
case_phases AS (
SELECT p.*, c.\"eventDate\", c.\"highestInjuryLevel\" = 'Fatal' AS fatal, a.aircraft_model_code
FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c.\"mKey\" = p.case_mkey
LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
WHERE c.\"eventDate\" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
)
SELECT c.\"ntsbNumber\", c.\"eventDate\", c.\"eventType\", c.\"eventCity\", c.\"eventStateOrRegion\", a.n_number, a.\"aircraftMake\", a.\"aircraftModel\", c.\"highestInjuryLevel\", c.\"totalFatal\", c.\"completionStatus\", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c.\"mKey\" AND a.position = 1
WHERE c.\"eventStateOrRegion\" = 'WA' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 300)
ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
current_codes AS (
SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
),
phases AS (
SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
FROM current_codes WHERE n = 1
UNION ALL
SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
),
case_phases AS (
SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
)
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."eventStateOrRegion" = 'WA' AND c."eventCountry" = 'USA'
AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 300)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB WPR27FA001Accident · 1 fatalClass 3 · FieldInvestigation openRoesler Scott D Roesler Glasair · Everett, WANTSB WPR26LA264Accident · Serious injuriesClass 4 · LimitedInvestigation openTag Aviation PTY Titanium Explorer · Cashmere, WANTSB WPR26LA026Accident · No injuriesClass 3 · LimitedPreliminary reportExtra Flugzeugbau EA 300/L · Arlington, WAOn October 14, 2025, at about 1030 Pacific daylight time, an EXTRA FLUGZEUGBAU GMBH 300L, N300EX, was substantially damaged when it was involved in an accident near Arlington, Washington. The flight instructor and private pilot receiving instruction were…NTSB WPR25LA307Accident · No injuriesClass 3 · LimitedPreliminary reportCessna 172 · Anacortes, WAOn September 22, 2025, about 1157 Pacific daylight time, a Cessna 172, N6831A, was substantially damaged when it was involved in an accident near Anacortes, Washington. The pilot was not injured. The airplane was operated as a Title 14 Code of Federal…NTSB WPR25LA306Accident · No injuriesClass 4 · LimitedFinal reportTemco GC-1B · Toledo, WAThe pilot’s failure to maintain control of the airplane during takeoff in crosswind conditions..NTSB WPR25LA259Accident · Serious injuriesClass 3 · LimitedPreliminary reportCzech Aircraft Group Sro Sportcruiser · Puyallup, WAOn August 25, 2025, about 1456 Pacific daylight time, a Czech Aircraft Group SRO Sportcruiser, N538SF was substantially damaged when it was involved in an accident near Puyallup, Washington. The pilot sustained serious injuries, and the passenger was not…NTSB WPR25FA197Accident · 1 fatalClass 3 · FieldPreliminary reportEvolution Revolt · Mount Vernon, WAOn July 2, 2025, about 1313 Pacific daylight time, an Evolution Aircraft REVOLT weight shift control aircraft (commonly called a trike), N774RS, was substantially damaged when it was involved in an accident near Mount Vernon, Washington. The pilot was fatally…NTSB WPR25LA199Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R66 · Tukwila, WAThe pilot’s failure to maintain yaw control during a takeoff to a hover in a gusting crosswind, which resulted in a loss of directional control and a subsequent hard landing.NTSB WPR25LA172Accident · Minor injuriesClass 4 · LimitedFinal reportBoeing B75N1 · Spokane Valley, WAThe pilot’s failure to maintain directional control during a takeoff roll in quartering tailwind conditions.NTSB WPR23LA356Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-12 · Eatonville, WAThe pilot's failure to maintain directional control during the takeoff roll, in gusty wind conditions, which resulted in a runway excursion.NTSB WPR23FA344Accident · 1 fatalClass 3 · FieldFinal reportSeawind 3000 · Bellevue, WAThe pilot’s loss of airplane control after encountering a lake swell and skipping during takeoff.NTSB WPR23LA101Accident · No injuriesClass 4 · LimitedFinal reportCub Crafters CC18-180 · Dallesport, WAThe flight instructor’s failure to see and avoid a channel marker during a step taxi in preparation for takeoff on the water.NTSB WPR23LA019Accident · No injuriesClass 4 · LimitedFinal reportProgressive Aerodyne SeaRey · Lake Isabel, WAThe pilot’s loss of airplane control after an encounter with windshear during takeoff which, resulted in a hard water landing.NTSB WPR22LA156Accident · Serious injuriesClass 4 · LimitedFinal reportSawby Scott RV-6A · Richland, WAThe pilot’s failure to maintain directional control during the takeoff ground roll.NTSB WPR21LA295Accident · No injuriesClass 4 · LimitedFinal reportCessna 172I · Renton, WAThe boat operator’s failure to remain a safe distance from the floatplane during the takeoff run, which resulted in a collision.NTSB WPR21LA172Accident · No injuriesClass 4 · LimitedFinal reportMichael J Robbins Searey · Friday Harbor, WAPartial loss of engine power due to the detachment of the throttle cable from the carburetor arm, as a result of the pilot’s inadequate maintenance which resulted in an off-airport landing and impact with vegetation.NTSB WPR21LA140Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172S · Everett, WAA total loss of engine power during climb, for reasons that could not be determined based on available evidence.NTSB WPR19LA249Accident · No injuriesClass 3 · LimitedFinal reportHughes 369 · Asotin, WAA loss of control for undetermined reasons.NTSB GAA19CA522Accident · No injuriesData collectionFinal reportStinson 108 · Bandera, WAThe pilot's selection of unsuitable terrain for a simulated rejected takeoff, which resulted in a runway overrun and noseover.NTSB GAA19CA517Accident · Minor injuriesData collectionFinal reportCessna 180 · Arlington, WAThe pilot's failure to properly secure the seat before takeoff, which resulted in it sliding back during takeoff and rendering him unable to reach the rudder pedals and throttle lever, a subsequent runway excursion, ground loop, and impact with a berm.NTSB WPR19LA221Accident · Minor injuriesClass 3 · LimitedFinal reportAutoGyro Cavalon · Shelton, WAThe pilot’s failure to initiate the takeoff roll with inadequate rotor speed, and his failure to follow the published takeoff procedures, which resulted in a loss of control and impact with the ground.NTSB WPR18CA213Accident · No injuriesData collectionFinal reportCessna E162 · Burlington, WAThe student pilot’s failure to maintain pitch control during an aborted takeoff.NTSB WPR18LA190Accident · Minor injuriesLimited investigationFinal reportAutogyro Calidus · Tacoma, WAThe pilot's failure to properly configure the gyrocopter for takeoff, which resulted in it developing high speed and led to a subsequent loss of control.NTSB GAA18CA336Accident · No injuriesData collectionFinal reportAviat A 1 · Renton, WAThe pilot’s inadequate crosswind correction, which resulted in the right wing impacting the water’s surface.NTSB GAA18CA290Accident · No injuriesData collectionFinal reportPiper PA 14 · Vashon, WAThe pilot’s failure to maintain directional control of the airplane during the takeoff roll due to his right foot inadvertently applying pressure to both rudder pedals.NTSB GAA18CA237Accident · Minor injuriesData collectionFinal reportStinson 108 · Eliza Island, WAThe pilot’s exceedance of the airplane’s critical angle of attack during takeoff, which resulted in an aerodynamic stall.NTSB GAA18CA104Accident · Minor injuriesData collectionFinal reportGeldermann Bert E Lancair Legacy · Friday Harbor, WAThe pilot’s inability to maintain the landing flare, which resulted in the airplane landing hard short of the runway. Contributing to the accident was the cockpit canopy opening in flight.NTSB GAA18CA078Accident · No injuriesData collectionFinal reportCessna 172 · Everett, WAThe pilot’s decision to abort the takeoff following a touch-and-go landing with too little runway remaining, which resulted in a runway overrun.NTSB WPR18LA020Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 140 · Port Townsend, WAA total loss of engine power for undetermined reasons.NTSB GAA18CA014Accident · No injuriesData collectionFinal reportHimsl Vincent S Vans RV-8 · Othello, WAThe pilot's failure to maintain directional control during the takeoff roll in crosswind conditions.NTSB GAA18CA001Accident · No injuriesData collectionFinal reportPiper J3C · Yakima, WAThe flight instructor's failure to maintain directional control during the takeoff roll.NTSB WPR17LA194Accident · No injuriesClass 3 · LimitedFinal reportPaul Gaywood E CH 601 HD · Goldendale, WAA total loss of engine power for reasons that could not be determined based on the available information.NTSB GAA17CA509Accident · No injuriesData collectionFinal reportRobinson Helicopter R22 · Bremerton, WAThe student pilot’s improper bank control during takeoff, which resulted in a dynamic rollover.NTSB GAA17CA494Accident · No injuriesData collectionFinal reportAerotechnik L 13 SEH Vivat · Moses Lake, WAThe pilot's improper takeoff configuration due to his failure to follow the pretakeoff checklist, which resulted in a loss of lift and collision with obstacles.NTSB GAA17CA323Accident · No injuriesData collectionFinal reportAir Tractor AT 802 · Prosser, WAThe pilot’s abrupt maneuver to avoid hay bales during the takeoff roll, which resulted in a loss of directional control.NTSB WPR17LA087Accident · Serious injuriesLimited investigationFinal reportTitan Tornado I · Spanaway, WAMaintenance personnel’s improper attachment of the aileron system components, which resulted in the pilot's inability to maintain flight control.NTSB GAA17CA158Accident · No injuriesData collectionFinal reportSocata TBM700 · Bellingham, WAThe pilot’s failure to properly deice the airplane before takeoff, which resulted in an aerodynamic stall during the initial climb.NTSB GAA17CA011Accident · No injuriesData collectionFinal reportFuller Neil H Glasair SH 2 · Bellingham, WAThe pilot’s failure to maintain directional control during the takeoff roll in crosswind conditions, which resulted in a runway excursion.NTSB GAA16CA485Accident · Minor injuriesData collectionFinal reportDormaier Monte R Baby Great Lakes · Mazama, WAThe pilot’s failure to maintain directional control during the takeoff roll, which resulted in a runway excursion.NTSB WPR16FA095Accident · 1 fatalField investigationFinal reportMooney M20K · Woodland, WAThe pilot's delay in recognizing that the airplane was not performing as expected and aborting the takeoff, which resulted in collision with a berm beyond the end of the runway. Contributing to the accident were the pilot's exceedance of the airplane's gross…NTSB WPR16LA011Accident · No injuriesLimited investigationFinal reportChristopher Tom Kitfox 5 · Battle Ground, WAThe total loss of engine power for reasons that could not be determined because postaccident examination of the engine revealed no preimpact mechanical malfunctions or failures that would have precluded normal operation.NTSB GAA15CA139Accident · Minor injuriesData collectionFinal reportRandall W Grandpre CH-701 Zenith · Quincy, WAThe pilot's inadequate selection of a take-off area, resulting in a collision with obstacles and a loss of directional control.NTSB WPR15FA181Accident · 1 fatalField investigationFinal reportBeech F35 · Everett, WAThe partial loss of engine power during takeoff due to debris within the fuel servo, which restricted fuel flow throughout the engine fuel system and resulted in a partial loss of engine power.NTSB WPR15FA158Accident · 2 fatalField investigationFinal reportPiper PA 46 350P · Spokane, WAThe mechanic's incorrect installation of two aileron cables and the subsequent inadequate functional checks of the aileron system before flight by both the mechanic and the pilot, which prevented proper roll control from the cockpit, resulting in the pilot's…NTSB WPR15LA111Accident · 1 fatalLimited investigationFinal reportPiper PA46 - 350P · Spokane, WAA total loss of engine power due to the refueler’s incorrect refueling of the airplane. Contributing to the accident was the fixed-base operator’s improper fueling nozzle, which facilitated the use of an incorrect fuel, and the pilot’s inadequate preflight…NTSB WPR14CA383Accident · No injuriesData collectionFinal reportAmerican Champion 7GCBC · Rimrock, WAThe pilot's failure to maintain aircraft control during takeoff from a rough runway surface which resulted in an off-airport forced landing just beyond the runway.NTSB WPR14FA209Accident · 1 fatalField investigationFinal reportKenneth A Berger Searey LSX · Electric City, WAThe pilot’s failure to maintain pitch control during takeoff after encountering a boat wake, which resulted in the airplane bouncing, impacting the water’s surface, and subsequently becoming submerged.NTSB WPR14LA206Accident · Minor injuriesLimited investigationFinal reportWilliams Helicopter UH 1H · Waitsburg, WAAn extreme vibration immediately after entering forward flight for reasons that could not be determined because postaccident examination of the helicopter did not reveal any anomalies that would have precluded normal operation. Contributing to the accident…NTSB WPR14LA179Accident · No injuriesLimited investigationFinal reportCoulter Hugh Clarke Pulsar XP Series I · Bremerton, WAFatigue failure of the nose landing gear retention and pivot shaft, which resulted in the in-flight separation of the nose gear wheel and tire assembly.NTSB WPR14FA137Accident · 2 fatalField investigationFinal reportEurocopter AS 350 B2 · Seattle, WAThe loss of helicopter control due to a loss of hydraulic boost to the tail rotor pedal controls at takeoff, followed by a loss of hydraulic boost to the main rotor controls after takeoff. The reason for the loss of hydraulic boost to the main and tail rotor…