NTSB investigations
20,559 cases where the phase of flight was Initial climb.
Cases, newest first
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.\"mKey\" IN (SELECT case_mkey FROM case_phases WHERE main = 350)
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."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 350)
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 WPR18LA158Accident · No injuriesClass 3 · LimitedFinal reportRhoads Autogyro MTO Sport · San Manuel, AZThe fracture of the propeller hub due to corrosion pitting along the propeller blade root seat, which led to cracking that was propagated due to high-cycle fatigue.NTSB ERA18FA149Accident · 1 fatalField investigationFinal reportTaylorcraft BC12 · Commerce, GAThe pilot's failure to effectively mitigate an accumulation of carburetor ice, which resulted in an undetected partial loss of engine power and an aerodynamic stall during takeoff.NTSB CEN18FA168Accident · 1 fatalField investigationFinal reportCirrus Design SR22 · Lone Tree, COThe pilot's loss of control due to spatial disorientation. Contributing to the accident was the pilot's self-induced pressure to fly the airplane at night in marginal weather conditions.NTSB CEN18LA171Accident · Serious injuriesLimited investigationFinal reportCessna 172N · Orrville, OHThe pilot's failure to attain adequate airspeed during the soft field takeoff, which resulted in an exceedance of the airplane's critical angle of attack and an aerodynamic stall.NTSB ERA18FA141Accident · 1 fatalField investigationFinal reportAeronca 7AC · Middletown, NYThe pilot's exceedance of the airplane's critical angle of attack during climbout, which resulted in an aerodynamic stall from which the pilot could not recover.NTSB WPR18LA132Accident · Minor injuriesLimited investigationFinal reportCosmos Phase III · Fernandina Beach, FLThe student pilot's failure to maintain aircraft control and the flight instructor’s failure to adequately monitor the student pilot before aircraft control was lost at a low altitude.NTSB CEN18WA154Accident · 2 fatalForeign investigationAmateur Construction Vari EZE · Innsbruck, AustriaOn April 29, 2018, about 0819 hours universal coordinated time, an amateur-built Vari-Eze airplane, Swiss registration HB-YCM, impacted terrain shortly after takeoff from the Innsbruck Airport (LOWI), Innsbruck, Austria. The pilot and passenger were fatally…NTSB CEN18LA152Accident · No injuriesLimited investigationFinal reportGrumman G 164A · Garwood, TXA partial loss of engine power for reasons that could not be determined because postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation.NTSB ERA18LA134Accident · 1 fatalLimited investigationFinal reportStanley Ernie Sigurd Kolb Mark · Collegedale, TNThe pilot's loss of airplane control, which resulted in an aerodynamic stall. Contributing to the accident was the pilot's improper decision to take off in the nonairworthy airplane in which he had no training and his lack of flight experience in the 17…NTSB DCA18LA163Accident · No injuriesClass 3 · LimitedFinal reportAirbus A330 323 · Atlanta, GAThe flight crew’s delayed landing after an in-flight engine fire, which reignited after both fire bottles were discharged and resulted in substantial damage to an engine pylon. Contributing to the delayed landing was likely the flight crew’s perception that…NTSB ENG18WA025Incident · No injuriesForeign investigationAirbus A330 · Brisbane, QLD, AustraliaThe Australian Government has notified the NTSB of an incident involving an Airbus A330-202 that occurred April 14, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the Australian Transport Safety Bureau (ATSB) investigation under the…NTSB DCA18WA140Incident · No injuriesForeign investigationAirbus A320 · Orlando, FLThe Transportation Safety Board (TSB) of Canada has notified the NTSB of an incident involving a AIRBUS A320 airplane that occurred on April 14, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the TSB's investigation under the…NTSB DCA18WA308Incident · No injuriesForeign investigationAirbus A320 · Mexico City, MexicoThe government of Mexico has notified the NTSB of an incident involving a AIRBUS A320 airplane that occurred on April 12, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the government of Mexico's investigation under the provisions of…NTSB WPR18FA119Accident · 6 fatalField investigationFinal reportPiper PA 24-260 · Scottsdale, AZThe flight instructor's failure to maintain airplane control during the initial climb as a result of the airplane being loaded above its maximum gross weight and beyond its aft center of gravity limits. Contributing to the accident was a degraded engine power…NTSB ANC18FA028Accident · 1 fatalField investigationFinal reportMooney M20J · Petaluma, CAThe pilot's failure to maintain adequate airspeed while departing in instrument meteorological conditions, moderate turbulence, and low-level wind shear, which resulted in the airplane exceeding its critical angle of attack and a subsequent aerodynamic stall.NTSB ERA18FA120Accident · 2 fatalClass 3 · FieldFinal reportPiper PA28R · Daytona Beach, FLExtensive fatigue cracking in the left-wing main spar lower cap and doublers, which resulted in the in-flight separation of the left wing. The fatigue cracks initiated and grew to a critical size due to flight and ground loads associated with flight-training…NTSB WPR18FA112Accident · 1 fatalField investigationFinal reportMooney M20E · Marina, CAThe pilot's exceedance of the airplane's critical angle of attack during takeoff, which resulted in an aerodynamic stall/spin.NTSB CEN18LA125Accident · Minor injuriesLimited investigationFinal reportCub Crafters PA18 150 · Beggs, OKThe pilot's failure to verify that the fuel selector was properly set before takeoff, which resulted in a total loss of engine power due to fuel starvation.NTSB ERA18LA107Accident · Minor injuriesLimited investigationFinal reportCessna 177 · Key West, FLA partial loss of engine power during initial climb for reasons that could not be determined because examination of the wreckage did not reveal any evidence of preimpact malfunctions or failures that would have precluded normal operation.NTSB ERA18LA103Accident · No injuriesClass 3 · LimitedFinal reportCessna T210 · Orlando, FLThe improper adjustment of the fuel pump by maintenance personnel, which resulted in an overly rich fuel/air mixture and a total loss of engine power.NTSB ERA18LA101Accident · No injuriesLimited investigationFinal reportPiper PA28 · Chesapeake, VAThe pilot's failure to apply carburetor heat during the approach for a touch-and-go landing, which resulted in a total loss of engine power during the subsequent takeoff.NTSB WPR18LA105Accident · No injuriesClass 3 · LimitedFinal reportPiper PA 28-180 · Montague, CAImpact with powerlines and terrain after takeoff for reasons that could not be determined based on the available information.NTSB CEN18LA119Accident · Serious injuriesClass 2 · LimitedFinal reportCzech Sport Piper Sport · Addison, TXThe operator’s use of improper fuel, which resulted in partial loss of engine power due to vapor lock.NTSB WPR18LA101Accident · No injuriesClass 3 · LimitedFinal reportPiper PA28R · Paso Robles, CAThe pilots' inadequate preflight inspection, which failed to ensure that the oil filler cap was secured and resulted in oil starvation and a total loss of engine power.NTSB CEN18LA177Accident · No injuriesLimited investigationFinal reportCessna 150M · Sinton, TXThe inadequate service and repair of the airplane's carburetor, which led to a partial loss of engine power during takeoff and resulted in a forced landing.NTSB ERA18LA102Accident · No injuriesClass 3 · LimitedFinal reportPiper PA 32-300 · Pompano Beach, FLThe pilot’s exceedance of the airplane’s critical angle of attack during an aborted landing, which resulted in an aerodynamic stall, loss of control, and impact with terrain. Contributing to the accident was the pilot’s failure to maintain a proper approach…NTSB CEN18LA114Accident · Minor injuriesLimited investigationFinal reportBeech 77 · Odessa, TXThe pilot’s improper takeoff procedures and his failure to abort the takeoff, which resulted in an aerodynamic stall and subsequent impact with terrain. Contributing to the accident was the pilot’s lack of experience in the airplane.NTSB ERA18LA087Accident · Minor injuriesClass 3 · LimitedFinal reportAero Commander Callair A 9 · Bunn, NCThe glider instructor's delayed remedial action when the glider became out of position during aerotow, which resulted in excessive side-loading of the release hook and a delay in the glider's release from tow, which resulted in the towplane’s descent and…NTSB DCA18RA093Incident · Minor injuriesForeign investigationAirbus A330 · Lagos, NigeriaThe AIB of Nigeria has notified the NTSB of an incident involving a Airbus A330 airplane that occurred on February 13, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the AIB of Nigeria's investigation under the provisions of ICAO…NTSB DCA18WA107Accident · 71 fatalForeign investigationAntonov AN148 · Argunovo, RussiaThe Russian Interstate Aviation Committee (MAK) has notified the NTSB of an accident involving a ANTONOV AN-148 airplane that occurred on February 11, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the MAK investigation under the…NTSB ERA18WA261Accident · Serious injuriesForeign investigationSkyrunner MK 3.2 · Margham, Dubai, United Arab EmiratesThe government of the United Arab Emirates has notified the NTSB of an accident involving a SkyRunner, MK-3.2 Powered Parachute that occurred on February 09, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the government of United Arab…NTSB ERA18LA083Accident · 1 fatalLimited investigationFinal reportGregory Newman Sonex Trainer · Carrabelle, FLA loss of engine power for reasons that could not be determined because the airplane was not recovered. Also causal was the pilot's decision to conduct a low-altitude turn following the loss of engine power, which resulted in an exceedance of the airplane's…NTSB ERA18LA068Accident · No injuriesLimited investigationFinal reportSchweizer 269C · Fort Lauderdale, FLThe partial loss of engine power during the initial climb due to a stuck intake valve on the No. 4 cylinder.NTSB WPR18WA159Accident · Serious injuriesForeign investigationRobinson R44 · Ayers Rock, AustraliaOn January 17, 2018, at 1800 local time, a Robinson R44 helicopter, VH-HGX, experienced a partial loss of engine power shortly after takeoff. The pilot subsequently initiated an autorotation, landed hard and rolled over near Ayres Rock, Australia. The pilot…NTSB WPR18LA070Accident · No injuriesLimited investigationFinal reportPiper PA 32-300 · Reno, NVA total loss of engine power due to fuel starvation. Contributing to the accident was the failure of the pilot/owner to ensure that the airplane was airworthy before flight.NTSB CEN18LA076Accident · Serious injuriesLimited investigationFinal reportBeech K35 · Longmont, COA total loss of engine power for reasons that could not be determined because a postaccident examination of the airplane revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.NTSB WPR18WA060Accident · 6 fatalForeign investigationDe Havilland DHC2 · Cottage Point, AustraliaOn December 31, 2017, at 1515 local time, a De Havilland DHC-2, VH-NOO, collided with water during takeoff initial climb near Cottage Point, Australia. The airplane was destroyed and the pilot and five passengers were fatally injured. The flight was operated…NTSB DCA18CA056Accident · No injuriesData collectionFinal reportMcdonnell Douglas DC 9 33F · Bethel, AKfailure of a cargo tie-down fastener, resulting in unsecured cargo striking the pressure bulkhead.NTSB WPR18WA054Accident · Serious injuriesForeign investigationBell UH1H · Bredasdorp, South AfricaOn December 21, 2017, about 1105 Coordinated Universal time, a Bell UH-1H helicopter, ZS-HLI, was substantially damaged when it impacted terrain shortly after liftoff from Bredasdorp fire station, Western Cape Province, South Africa. The helicopter was…NTSB WPR18LA049Accident · Serious injuriesLimited investigationFinal reportNorth American Navion · El Cajon, CAA total loss of engine power for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.NTSB ERA18LA062Accident · No injuriesLimited investigationFinal reportPiper PA32 · Oakland Park, FLThe loss of engine power for reasons that could not be determined based on the available evidence.NTSB CEN18LA051Accident · No injuriesLimited investigationFinal reportCessna 172C · Algona, IAThe No. 1 cylinder head separating at the cylinder head-to-barrel interface and the subsequent total loss of engine power.NTSB GAA18CA071Accident · No injuriesData collectionFinal reportCessna 402 · Hyannis, MAEncounter with a flock of birds during takeoff at night, resulting in multiple bird strikes and structural damage.NTSB ANC18LA013Accident · No injuriesLimited investigationFinal reportCessna 172R · Huntingdon, TNA total loss of engine power for reasons that could not be determined because a postaccident engine examination and testing revealed no preimpact mechanical malfunctions or failures that would have precluded normal operation.NTSB ERA18CA035Accident · No injuriesData collectionFinal reportDriggers Quillan E Titan Tornado · Mechanicsville, VAThe pilot’s inadequate preflight inspection and failure to detect water contamination in the fuel system, which resulted in a partial loss of engine power on takeoff.NTSB DCA18WA028Incident · No injuriesForeign investigationBoeing 737 · Latvia, LatviaThe Transport Accident and Incident Investigation Bureau of Latvia has notified the NTSB of an incident involving a Boeing 737, which occurred on November 23, 2017. The NTSB has appointed a U.S Accredited Representative to assist under the provisions of ICAO…NTSB ERA18LA033Accident · Minor injuriesLimited investigationFinal reportCessna 421 · Presque Isle, METhe in-flight leakage of fuel from the fuel injection system's mixture shaft onto the hot turbocharger, which resulted in an in-flight fire, and the pilot's inability to see the runway due to reduced visibility conditions and conduct a successful landing.NTSB WPR18LA034Accident · Serious injuriesClass 2 · LimitedFinal reportCessna 172P · San Jose, CAThe pilot's delayed decision to execute an emergency landing and his attempt to return to the airport following a partial loss of power due to wear on internal engine components, which prevented the engine from developing full-rated power during the…NTSB ERA18LA027Accident · No injuriesClass 3 · LimitedFinal reportHomer Autogyro Cavalon · Oak Island, NCA partial loss of engine power for reasons that could not be determined based on the available information.NTSB CEN18LA027Accident · Serious injuriesLimited investigationFinal reportRiggs Kenneth W T Bird II · St Mary's, KSThe loss of engine power due to a propeller failure when the passenger’s hat exited the cockpit and impacted the three-bladed pusher propeller, separating one of the propeller blades.