NTSB investigations, NV
227 cases where the phase of flight was Maneuvering.
Cases per year
| 1964 | 5 |
|---|---|
| 1965 | 7 |
| 1966 | 3 |
| 1967 | 1 |
| 1968 | 4 |
| 1969 | 1 |
| 1970 | 4 |
| 1971 | 2 |
| 1972 | 4 |
| 1973 | 3 |
| 1974 | 6 |
| 1975 | 4 |
| 1976 | 5 |
| 1977 | 3 |
| 1978 | 1 |
| 1979 | 3 |
| 1980 | 3 |
| 1982 | 5 |
| 1983 | 7 |
| 1984 | 2 |
| 1985 | 5 |
| 1986 | 4 |
| 1987 | 4 |
| 1988 | 5 |
| 1989 | 4 |
| 1990 | 3 |
| 1991 | 2 |
| 1992 | 5 |
| 1993 | 3 |
| 1994 | 5 |
| 1995 | 1 |
| 1996 | 1 |
| 1997 | 2 |
| 1999 | 9 |
| 2000 | 5 |
| 2001 | 4 |
| 2002 | 7 |
| 2003 | 6 |
| 2004 | 5 |
| 2005 | 3 |
| 2006 | 3 |
| 2007 | 3 |
| 2008 | 4 |
| 2009 | 5 |
| 2010 | 4 |
| 2011 | 8 |
| 2012 | 4 |
| 2013 | 7 |
| 2014 | 4 |
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 4 |
| 2022 | 5 |
| 2023 | 3 |
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\" = 'NV' AND c.\"eventCountry\" = 'USA'
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 c."eventStateOrRegion" = 'NV' AND c."eventCountry" = 'USA'
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 WPR23LA330Accident · No injuriesClass 4 · LimitedFinal reportYamaha Fazer SAR · Reno, NVThe operator’s incorrect input into the ground station controller, resulting in a loss of control during flight and subsequent impact with terrain.NTSB WPR23LA316Accident · No injuriesClass 3 · LimitedFinal reportRemos Acft Gmbh Flugzeugbau Remos GX · Henderson, NVThe flight instructor’s failure to ensure there was adequate fuel onboard before departure, which led to a loss of engine power due to fuel exhaustion.NTSB WPR23LA145Accident · No injuriesClass 4 · LimitedFinal reportRobinson Helicopter R44 II · Elko, NVThe pilot’s failure to maintain sufficient altitude and airspeed in gusting tailwind conditions that resulted in an unrecoverable descent and impact with terrain.NTSB WPR22FA350Accident · 1 fatalClass 3 · FieldFinal reportAerovodochody L-29 Delfin · Reno, NVThe pilot’s in-flight incapacitation due to G-induced loss of consciousness, which resulted in a subsequent impact with terrain.NTSB WPR22LA317Accident · Serious injuriesClass 3 · LimitedFinal reportFlight Design General Avn Ctsw SuperSport · Boulder City, NVA total loss of engine power for undetermined reasons.NTSB WPR22LA305Accident · No injuriesClass 4 · LimitedFinal reportHughes Helicopters 369E · Ely, NVThe pilot’s failure to maintain clearance from terrain while maneuvering at a low altitude.NTSB WPR22FA240Accident · 1 fatalClass 3 · FieldFinal reportExtra Flugzeugbau EA 300/L · Boulder City, NVThe failure of the pilot to maintain control of the airplane by exceeding the airplane’s critical angle of attack while maneuvering in a turning climb at a low altitude, which resulted in an aerodynamic stall and spin from which the pilot was unable to…NTSB WPR22LA096Accident · No injuriesClass 4 · LimitedFinal reportBell 47 · Fallon, NVThe pilot's failure to maintain control of the helicopter during a hover which, resulted in a collision with a hangar.NTSB WPR21LA058Accident · Minor injuriesClass 3 · LimitedFinal reportAir Creation Tanarg · Pahrump, NVThe pilot’s failure to maintain control while maneuvering at low altitude.NTSB WPR21LA021Accident · Minor injuriesClass 4 · LimitedFinal reportRobinson R44 · Pahrump, NVThe pilot’s failure to maintain helicopter control while hovering low over a body a water while facing into the sun, which resulted in a loss of visual reference and subsequent impact with the lake surface.NTSB WPR20LA216Accident · 1 fatalClass 3 · LimitedFinal reportSchleicher ASW27 · Ely, NVThe pilot’s loss of glider control while maneuvering near a mountain ridge in downdrafts and dry microbursts at an altitude that precluded recovery.NTSB WPR20CA197Accident · No injuriesClass 4 · Data collectionFinal reportRobinson R44 · Pioche, NVThe pilot’s decision to fly at low level over mountainous terrain and his inability to recover when the helicopter encountered a downdraft that resulted in a collision with terrain.NTSB WPR20FA013Accident · 2 fatalClass 3 · FieldFinal reportRobinson R44 · Las Vegas, NVAn undetermined inflight event that resulted in the pilot performing an autorotation to uneven terrain for reasons that could not be determined due to the extent of impact damage.NTSB WPR19LA261Accident · Minor injuriesClass 3 · LimitedFinal reportHavoc Air Racing Super GT 111 · Reno, NVThe failure of the landing gear to extend for reasons that could not be determined.NTSB WPR19TA245Accident · No injuriesClass 3Final reportBell 47G · North Las Vegas, NVThe noncertificated passenger’s loss of control during attempted hover operations.NTSB WPR19TA018Accident · Serious injuriesFinal reportAudenried Kitfox S7 SuperSport · Flanigan, NVThe pilot's failure to maintain airspeed during a sharp turn at low altitude, which resulted in an aerodynamic stall.NTSB GAA19CA039Accident · Minor injuriesData collectionFinal reportBell OH 58A · Carson City, NVThe pilot's failure to maintain clearance from power lines while maneuvering at a low altitude in hilly terrain. Contributing to the accident was the pilot’s inability to determine the airplane’s altitude due to sun glare.NTSB WPR18LA267Accident · No injuriesLimited investigationFinal reportAero Vodochody L39 · Reno, NVThe pilot of the race 13 airplane's failure to maintain clearance from the race 37 airplane during the closed course air race.NTSB WPR18FA247Accident · 2 fatalClass 3 · FieldFinal reportSchempp-Hirth Duo Discus T · New Washoe City, NVThe pilot’s delayed recovery from an inadvertent spin and/or spiral dive and an exceedance of the glider’s design limit load during recovery, which resulted in an overload failure of both wings.NTSB GAA18CA512Accident · No injuriesClass 4 · Data collectionFinal reportBell 206 · Battle Mountain, NVThe pilot's failure to maintain the proper altitude and airspeed while flying in a canyon in gusting wind conditions.NTSB WPR17LA209Accident · No injuriesLimited investigationFinal reportTrudel GP 4 · Reno, NVThe other pilot's failure to maintain clearance from the airplane during the line-abreast formation.NTSB GAA17CA386Accident · Minor injuriesData collectionFinal reportAlexander Schleicher ASH 31 MI · Ely, NVThe pilot’s failure to maintain the proper airspeed and his exceedance of the glider’s critical angle of attack, which resulted in a stall/spin.NTSB WPR16LA184Accident · No injuriesLimited investigationFinal reportOGG Richard A OGG Glasair I · Reno, NVThe failure of an induction elbow following an engine backfire, which resulted in an in-flight fire and loss of engine power.NTSB WPR16LA181Accident · No injuriesLimited investigationFinal reportDehavilland DH115 Vampire · Reno, NVThe in-flight failure of the canopy and subsequent loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine revealed no anomalies that would have precluded normal operation.NTSB GAA16CA428Accident · No injuriesData collectionFinal reportGrumman American Avn. AA 5A · Reno, NVThe pilot's failure to see and avoid fence posts during landing, which resulted in substantial damage to the wings.NTSB WPR16FA097Accident · 2 fatalField investigationFinal reportExtra Flugzeugproduktions-Und EA 300/L · Henderson, NVThe pilot's failure to monitor and maintain clearance with terrain while maneuvering at low level. Contributing to the accident, was the pilot's failure to conduct an adequate amount of clearing turns while maneuvering at low level.NTSB WPR16LA016Accident · No injuriesLimited investigationFinal reportCessna 310C · Primm, NVThe inadequate visual lookout by the pilots of both airplanes, which resulted in a midair collision. Contributing to the accident was the pilots' failure to tune to, monitor, and communicate over the common traffic advisory frequency their relative positions…NTSB GAA16CA026Accident · No injuriesData collectionFinal reportRans S-7 · Gerlach, NVThe pilot's failure to maintain pitch and airspeed control, in conjunction with full flaps, while maneuvering at a low altitude, resulting in a tail-stall and subsequent impact with the ground.NTSB WPR15LA142Accident · Serious injuriesLimited investigationFinal reportSchleicher ASW 27 · Reno, NVThe glider's encounter with severe turbulent atmospheric conditions after the pilot inadvertently entered clouds, which led to his inability to maintain a proper airspeed and the subsequent in-flight breakup of the glider.NTSB WPR15LA024Accident · No injuriesLimited investigationFinal reportExtra Flugzeugproduktions-Und EA 300/L · Las Vegas, NVThe failure of the rudder cable due to tension overstress as a result of the cable’s strength being compromised by wear damage, which resulted in the flight instructor’s inability to maintain directional control during the landing roll.NTSB WPR14LA394Accident · No injuriesLimited investigationFinal reportLorentzen Lancair Legacy · Reno, NVThe shearing of mounting bolts that attached the right turbocharger to its mounting bracket during an air race, which resulted in hot exhaust gases leaking into the engine compartment and starting a fire.NTSB WPR14FA369Accident · 1 fatalField investigationFinal reportBackovich George C G P 5 · Reno, NVThe failure of the right wing under normal race loads due to an improper repair of the right wing spar that reduced its structural strength following a previous landing accident.NTSB WPR14GA281Accident · Minor injuriesFinal reportAmerican Eurocopter AS350B3 · Fallon, NVA loss of tail rotor effectiveness, which resulted in an uncontrolled rotation and descent into terrain. Contributing to the accident was a sudden shift in wind conditions and the helicopter's high power demand condition due to its load weight and operating…NTSB WPR13LA407Accident · No injuriesLimited investigationFinal reportMooney M20J · Lund, NVThe pilot’s failure to monitor the environment, which led to a collision with power lines during climbout. Contributing to the accident was the loss of engine power during low-altitude flight for reasons that could not be determined because postaccident…NTSB WPR13FA376Accident · 2 fatalField investigationFinal reportUrban Air Sro Samba XXL · Carson City, NVThe pilot's failure to maintain adequate airspeed while maneuvering, which led to the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall/spin. Contributing to the accident was the improper location of the parachute…NTSB WPR13GA338Accident · 1 fatalFinal reportBell HH-1H · Mount Charleston, NVThe premature hoisting operation and the inadvertent disengagement of the hoist hook on the rescuer’s harness in dark night conditions. Contributing to the accident was a lack of direct audio communication between the rescuer and the hoist operator.NTSB WPR13LA334Accident · No injuriesLimited investigationFinal reportEurocopter AS 350 B2 · Las Vegas, NVThe pilot receiving instruction's failure to maintain control of the helicopter in a hover, which resulted in a tail rotor ground strike.NTSB WPR13LA270Accident · No injuriesLimited investigationFinal reportAero Vodochody L39C · Reno, NVThe other pilot’s failure to see and avoid the airplane during an air race training session, which resulted in a midair collision.NTSB WPR13CA204Accident · No injuriesData collectionFinal reportBell 206B · Wells, NVThe pilot's failure to maintain clearance from an obstacle while maneuvering at a low altitude.NTSB WPR13GA128Accident · 1 fatalFinal reportBell 206B · Eureka, NVThe pilot’s failure to maintain clearance from a wire while maneuvering during low-altitude operations. Contributing to the accident was task- and/or work-related fatigue.NTSB WPR12FA421Accident · No injuriesField investigationFinal reportFrederick F 1 · Reno, NVThe pilot’s operation of the airplane above the established never-exceed speed and the incorrect installation of the trim tab control horn, which resulted in the flutter of the left elevator trim tab.NTSB WPR12LA250Accident · No injuriesLimited investigationFinal reportSchempp-Hirth Standard Cirrus · Sparks, NVThe failure of both pilots to see and avoid each other, which resulted in a midair collision.NTSB WPR12LA218Accident · 1 fatalLimited investigationFinal reportAvia Stroitel AC-5M · Kingston, NVThe pilot's failure to maintain control of the glider while maneuvering in flight.NTSB WPR12CA100Accident · Minor injuriesData collectionFinal reportSchweizer 269C · Las Vegas, NVThe pilot's inadequate compensation for the known wind conditions during a hovering maneuver, which resulted in a loss of tail rotor effectiveness and directional control.NTSB WPR12CA069Accident · Minor injuriesData collectionFinal reportCessna 208 · Mesquite, NVThe pilot's improper preflight planning, which resulted in a loss of engine power due to fuel exhaustion.NTSB WPR11LA461Accident · Serious injuriesLimited investigationFinal reportBunker RLV-1 · Wells, NVThe pilot did not maintain clearance from terrain while maneuvering. Contributing to the accident was the pilot’s inadequate in-flight planning.NTSB WPR11MA454Accident · 11 fatalClass 1 · MajorFinal reportNorth American/Aero Classics P-51D · Reno, NVThe reduced stiffness of the elevator trim tab system that allowed aerodynamic flutter to occur at racing speeds. The reduced stiffness was a result of deteriorated locknut inserts that allowed the trim tab attachment screws to become loose and to initiate…NTSB WPR11CA360Accident · No injuriesData collectionFinal reportAircraft Mfg & Design CH750 Stol · New Washoe City, NVThe pilot under instruction's control interference and the CFI's inadequate supervision of the flight.NTSB WPR11LA265Accident · No injuriesLimited investigationFinal reportAerovodochody L-29 Delfin · Reno, NVThe failure of a modified engine mount to keep the engine properly aligned, which resulted in partial failure of the rudder support structure due to the deflection of the jet engine exhaust.NTSB WPR11LA263Accident · No injuriesLimited investigationFinal reportBeech B23 · Jean, NVThe student pilot’s improper in-flight fuel management when he did not switch to the fullest fuel tank when the engine began to lose power, which resulted in fuel starvation and the complete loss of engine power during maneuvering flight. Contributing to the…