NTSB investigations, OK
569 cases where the phase of flight was Enroute.
Cases per year
| 1964 | 18 |
|---|---|
| 1965 | 16 |
| 1966 | 11 |
| 1967 | 22 |
| 1968 | 16 |
| 1969 | 22 |
| 1970 | 15 |
| 1971 | 23 |
| 1972 | 12 |
| 1973 | 12 |
| 1974 | 9 |
| 1975 | 14 |
| 1976 | 16 |
| 1977 | 14 |
| 1978 | 9 |
| 1979 | 15 |
| 1980 | 13 |
| 1981 | 12 |
| 1982 | 15 |
| 1983 | 14 |
| 1984 | 15 |
| 1985 | 10 |
| 1986 | 15 |
| 1987 | 9 |
| 1988 | 11 |
| 1989 | 12 |
| 1990 | 5 |
| 1991 | 6 |
| 1992 | 7 |
| 1993 | 6 |
| 1994 | 6 |
| 1995 | 7 |
| 1996 | 10 |
| 1997 | 4 |
| 1998 | 11 |
| 1999 | 11 |
| 2000 | 3 |
| 2001 | 6 |
| 2002 | 8 |
| 2003 | 6 |
| 2004 | 3 |
| 2005 | 8 |
| 2006 | 7 |
| 2007 | 5 |
| 2008 | 4 |
| 2009 | 4 |
| 2010 | 2 |
| 2011 | 4 |
| 2012 | 3 |
| 2013 | 8 |
| 2014 | 2 |
| 2015 | 8 |
| 2016 | 5 |
| 2017 | 5 |
| 2018 | 6 |
| 2019 | 1 |
| 2020 | 7 |
| 2021 | 3 |
| 2022 | 7 |
| 2023 | 5 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 1 |
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\" = 'OK' AND c.\"eventCountry\" = 'USA'
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 c."eventStateOrRegion" = 'OK' AND c."eventCountry" = 'USA'
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 CEN27LA029Accident · No injuriesClass 3 · LimitedPreliminary reportPiper PA-28 · Claremore, OKOn October 22, 2026, about 1510 central daylight time, a Piper PA-28-160 airplane, N5393W, was substantially damaged when it was involved in an accident near Claremore, Oklahoma. The flight instructor and student pilot were not injured. The airplane was…NTSB CEN26LA073Accident · Minor injuriesClass 4 · LimitedFinal reportRockwell International 114 · Stroud, OKThe pilot’s inadequate fuel planning, which resulted in a total loss of power due to fuel exhaustion.NTSB CEN25FA320Accident · 1 fatalClass 3 · FieldPreliminary reportCessna 172L · Walters, OKOn August 14, 2025, about 0934 central daylight time, a Cessna 172L, N2860Q, was destroyed when it was involved in an accident near Walters, Oklahoma. The pilot sustained fatal injuries. The airplane was operated under Title 14 Code of Federal Regulations as…NTSB DCA25LA190Accident · Serious injuriesClass 4 · LimitedFinal reportBoeing 737-7H4 · Tahlequah, OKThe airplane’s encounter with moderate turbulence during descent.NTSB CEN24LA370Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-25-235 · Muskogee, OKThe pilot’s inattention to refueling during turn-around operations which resulted in a loss of engine power due to fuel exhaustion.NTSB CEN24FA094Accident · 3 fatalClass 3 · FieldFinal reportBell 206 · Hydro, OKThe helicopter’s inflight collision with cackling geese, resulting in an inflight breakup.NTSB CEN24LA063Accident · No injuriesClass 3 · LimitedFinal reportCessna T210 · Sapulpa, OKThe total loss of engine power due to the failure of the left magneto and subsequent damage to a lead for the right magneto.NTSB CEN23LA370Accident · No injuriesClass 3 · LimitedFinal reportPiper PA31 · Durant, OKThe loosening of a connecting rod cap nut for reasons that could not be determined, which resulted in a mechanical failure of the engine and an in-flight fire.NTSB CEN23FA360Accident · Serious injuriesClass 3 · FieldFinal reportPiper PA-24-250 · Oklahoma City, OKThe pilot’s mismanagement of fuel, which resulted in fuel starvation and a subsequent total loss of engine power.NTSB CEN23LA327Accident · Minor injuriesClass 3 · LimitedFinal reportVans RV10 · Chouteau, OKThe total loss of engine power as a result of a failed positive crankcase ventilation (PCV) valve and a subsequent impact with terrain.NTSB CEN23FA095Accident · 1 fatalClass 3 · FieldFinal reportCessna 172 · Hooker, OKThe pilot’s decision to depart and continue the visual flight rules flight into night instrument meteorological conditions, which resulted in spatial disorientation and a loss of airplane control.NTSB CEN22LA343Accident · No injuriesClass 3 · LimitedFinal reportBeech E33A · Zena, OKThe pilot’s inadequate preflight inspection and fuel planning, and improper in-flight decision making which resulted in a total loss of engine power due to fuel exhaustion.NTSB CEN22LA315Accident · No injuriesClass 3 · LimitedFinal reportZenith Zodiac 650B · Eufaula, OKThe loss of engine power due to a push rod that was incorrectly installed by the airplane owner.NTSB CEN22LA311Accident · No injuriesClass 3 · LimitedFinal reportRotorsport UK MTOSport 2017 · Mead, OKA partial loss of engine power for reasons that could not be determined.NTSB CEN22LA255Accident · No injuriesClass 3 · LimitedFinal reportMooney M20E · Stillwater, OKThe inadequate maintenance and inspection of the engine induction air coupling, which impeded airflow to the engine and resulted in the subsequent partial loss of engine power.NTSB CEN22LA196Accident · Minor injuriesClass 4 · LimitedFinal reportPiper PA-34-200T · Marshall, OKThe pilot’s failure to manage fuel, which resulted in a loss of engine power to both engines due to fuel starvation.NTSB CEN22FA145Accident · 3 fatalClass 3 · FieldFinal reportPiper PA-30 · Pond Creek, OKThe pilot’s loss of control of the airplane, resulting in an in-flight breakup.NTSB CEN22LA140Accident · No injuriesClass 3 · LimitedFinal reportBeech A36 · Heavner, OKA total loss of engine power due to oil exhaustion which resulted from improper engine maintenance.NTSB CEN22FA070Accident · 1 fatalClass 3 · FieldFinal reportCessna 310J · Inola, OKThe loss of airplane control for reasons that could not be determined based on the available evidence.NTSB CEN21LA408Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 150 · Heavener, OKA total loss of engine power due to the failure of the No. 2 cylinder exhaust valve for reasons that could not be determined.NTSB CEN21FA300Accident · 2 fatalClass 3 · FieldFinal reportBeech 35-33 · Roff, OKThe pilot’s loss of airplane control due to spatial disorientation during low-level nighttime flight.NTSB CEN21LA057Accident · Minor injuriesClass 3 · LimitedFinal reportCirrus SR22 · Tishomingo, OKThe pilot’s improper adjustment of the engine mixture control, which resulted in a total loss of engine power. Contributing to the accident was a disconnected oil temperature connector, which was likely damaged during maintenance before the accident flight…NTSB CEN20LA378Accident · No injuriesClass 3 · LimitedFinal reportCessna 340 · Oklahoma City, OKA failure of the windscreen for reasons that could not be determined based on available evidence.NTSB CEN20LA301Accident · No injuriesClass 3 · LimitedFinal reportVans RV4 · Idabel, OKThe pilot’s improper installation of an oil line, resulting in the loss of oil and subsequent total loss of engine power.NTSB CEN20LA292Accident · No injuriesClass 3 · LimitedFinal reportBeech A23-24 · Burns Flat, OKThe mechanic’s improper maintenance when he reinstalled the fuel servo during the last annual inspection, which resulted in a loss of engine power during cruise flight when the throttle control rod-end disconnected from the fuel servo throttle linkage.NTSB CEN20CA249Accident · No injuriesClass 4 · Data collectionFinal reportMooney M20C · Lahoma, OKThe loss of engine power due to fuel exhaustion and the pilot’s improper fuel planning before the flight.NTSB CEN20LA173Accident · Serious injuriesClass 3 · LimitedFinal reportTitan Titan Tornado S · Haskell, OKThe student pilot/builder’s addition of winglets to the stabilator, which resulted in flutter and overstress failure of the stabilator control horn.NTSB CEN20LA053Accident · Minor injuriesClass 3 · LimitedFinal reportCessna T210 · Ada, OKThe pilot’s inadequate fuel management, which resulted in a total loss of engine power due to fuel starvation, and the pilot’s inadequate preflight inspection and preflight fuel planning.NTSB CEN19LA106Accident · No injuriesClass 3 · LimitedFinal reportRobinson R22 · Madill, OKThe failure of the V-belts due to improper maintenance, which resulted in the loss of power to the helicopter's rotor system and subsequent forced landing on rough terrain.NTSB GAA18CA435Accident · No injuriesData collectionFinal reportCessna 560 · Tulsa, OKThe airplane’s collision with a bird during approach.NTSB GAA18CA325Accident · Minor injuriesData collectionFinal reportCosentino Garey A Pegasus · Kingston, OKThe pilot’s failure to maintain altitude and the powered parachute’s subsequent impact with trees.NTSB CEN18LA156Accident · No injuriesLimited investigationFinal reportLaminar Lancair 360 · Woodward, OKThe pilot-rated passenger’s inadvertent contact with and closure of the emergency fuel shutoff valve, which resulted in the total loss of engine power due to fuel starvation. Contributing to the accident was the pilot's lack of experience in the accident…NTSB CEN18LA131Accident · Minor injuriesLimited investigationFinal reportCessna 180 · Grove, OKA total loss of engine power due to carburetor ice accumulation. Contributing to the accident was the pilot’s failure to apply carburetor heat immediately following the loss of engine power.NTSB ERA18FA114Accident · 2 fatalField investigationFinal reportBeech V35 · Hydro, OKThe pilot's decision to continue the night visual flight rules flight into instrument meteorological conditions, which resulted in a loss of control due to spatial disorientation. Contributing was the pilot's lack of instrument/night currency, and his failure…NTSB CEN18LA075Accident · Serious injuriesLimited investigationFinal reportPiper PA 28-236 · Tishomingo, OKThe pilot’s inadequate preflight fuel planning and in-flight fuel monitoring and his decision to take off with an unverified amount of fuel, which resulted in fuel exhaustion and a subsequent impact with trees during an attempted forced landing.NTSB CEN17LA292Accident · Minor injuriesLimited investigationFinal reportPiper PA 46 350P · Tahlequah, OKThe total loss of engine power, which resulted from fatigue failure of two engine through bolts and the No. 2 cylinder attachment studs due to the lack of sufficient clamping force.NTSB CEN17LA286Accident · Minor injuriesLimited investigationFinal reportBeech V35 · Walters, OKMaintenance personnel’s installation of an improper vacuum pump gasket, which resulted in oil starvation to the engine and a subsequent total loss of engine power.NTSB CEN17LA186Accident · Minor injuriesLimited investigationFinal reportPiper PA 28-140 · Muskogee, OKThe pilot's improper in-flight fuel management, which resulted in a partial loss of engine power due to fuel starvation.NTSB CEN17FA138Accident · 1 fatalField investigationFinal reportBeech V35 · Union City, OKThe pilot's improper recovery from a spin.NTSB CEN17LA121Accident · No injuriesLimited investigationFinal reportBeech C90A · Rattan, OKThe loss of electrical power due to the pilot’s inadvertent selection of the engine start switches and the subsequent fuel exhaustion to the left engine as the pilot attempted to locate visual meteorological conditions. Contributing to the accident were the…NTSB CEN17LA019Accident · Serious injuriesLimited investigationFinal reportBellanca 17-31A · Mc Alester, OKA total loss of engine power during initial climb due to fuel starvation.NTSB CEN16LA323Accident · Minor injuriesLimited investigationFinal reportCessna TU206C · Skiatook, OKA total loss of engine power after takeoff for reasons that could not be determined based on the available information.NTSB CEN16LA217Accident · Minor injuriesLimited investigationFinal reportBellanca 17 30 · Westport, OKA total loss of engine power due to fuel starvation and the pilot's mismanagement of the available fuel.NTSB GAA16CA177Accident · Minor injuriesData collectionFinal reportBeech A23 · Hulbert, OKThe pilot's inadequate fuel planning, which resulted in fuel exhaustion, and collision with terrain.NTSB CEN16LA090Accident · No injuriesLimited investigationFinal reportBellanca 17-30A · Overbrook, OKThe pilot’s inadequate preflight fuel planning, which resulted in a total loss of engine power due to fuel exhaustion, and his subsequent decision to circle to the north end of the airport due to a light tailwind condition instead of making a downwind landing.NTSB CEN16LA082Accident · No injuriesLimited investigationFinal reportBeech V35B · Tahlequah, OKA partial loss of engine power shortly after takeoff due to an inadequately tightened fuel line. Also causal was the pilot's failure to extend the landing gear once the airplane was in a position to safely land on the runway.NTSB CEN15LA432Accident · 1 fatalLimited investigationFinal reportRans S18 · Shattuck, OKThe noncertificated pilot’s failure to maintain control of the unregistered airplane during initial climb and his subsequent exceedance of the airplane’s critical angle-of-attack, which resulted in a stall/spin.NTSB CEN15LA379Accident · Minor injuriesLimited investigationFinal reportRobinson Helicopter R44 II · Ketchum, OKThe separation of the tail rotor gearbox from the tailboom aft bulkhead due to overstress loads imposed by a blade imbalance from an in-flight impact with an undetermined object.NTSB CEN15FA316Accident · 2 fatalField investigationFinal reportBeech V35B · Colbert, OKThe pilot's failure to properly position the fuel selector, which resulted in a total loss of engine power due to fuel starvation. Contributing to the severity of the accident was the pilot's failure to select an appropriate location for a forced landing,…NTSB CEN15LA204Accident · Minor injuriesLimited investigationFinal reportGrumman G 164A · Maysville, OKThe loss of engine power for reasons that could not be determined because a postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.