NTSB investigations, AK
21 cases where the sequence of events included Powerplant sys/comp malf/fail.
Cases per year
| 2008 | 4 |
|---|---|
| 2009 | 1 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026 | 1 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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\" = 'AK' AND c.\"eventCountry\" = 'USA'
AND c.\"mKey\" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.\"tier2Number\" = '340' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE \"isDefiningEvent\"))
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.
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" = 'AK' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '340' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent")) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
Run 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 ENG26FA034Incident · No injuriesClass 3 · FieldPreliminary reportBoeing 747 · Anchorage, AKOn August 15, 2026, 1755 Alaska Daylight Time, a China Airlines Flight Number CI-5265, Boeing 747-400F, registration B-18725, powered by four GE Aerospace CF6-80C2B1F turbofan engines, experienced an inflight fire indication during the initial climb from Ted…NTSB ANC25LA025Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172A · Fairbanks, AKThe pilot’s decision to initiate the flight despite identifying a malfunction in the carburetor heat system during the pre-takeoff engine run-up, which led to a partial loss of engine power during climb out. Contributing to the accident was maintenance…NTSB ANC24LA025Accident · No injuriesClass 3 · LimitedFinal reportCessna 120 · Talkeetna, AKA degraded ignition system, which resulted in a total loss of engine power. Contributing to the accident was maintenance personnel’s inadequate inspection of the ignition system.NTSB ANC22LA049Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-20 · Palmer, AKThe loss of engine power due to carburetor icing and the pilot’s failure to utilize carburetor heat.NTSB ANC21LA094Accident · No injuriesClass 3 · LimitedFinal reportDehavilland DHC-3 · Bettles, AKThe seizure of the engine during flight for undetermined reasons, which led to a total loss of engine power.NTSB ANC21LA038Accident · No injuriesClass 3 · LimitedFinal reportEnstrom F-28F · Palmer, AKA loss of drive to the rotor system due to the disengagement of the main belt drive tensioning system, which resulted in a forced landing. The disengagement was due to inadequate clearance between the clutch handle and the roll pin in the handle bellcrank…NTSB ANC18LA058Accident · No injuriesLimited investigationFinal reportRobinson R44 · Bettles, AKMaintenance personnel's application of insufficient preload on the attachment hardware for the idler gear shaft during engine overhaul, which resulted in the dismounting of the idler gear shaft assembly due to wear and deformation and the subsequent total…NTSB ANC17LA052Accident · No injuriesLimited investigationFinal reportCessna A185 · Aniak, AKThe pilot's inadequate preflight inspection, which failed to detect a crack in the propeller blade, which led to the separation of a section of a propeller blade due to fatigue.NTSB ANC17LA007Accident · No injuriesLimited investigationFinal reportPiper PA-18 · Bethel, AKThe mechanic's failure to install a whistle slot in the engine breather tube, which resulted in a frozen tube, displacement of the crankshaft oil seal, a loss of oil, and smoke in the cockpit, which led to a forced landing.NTSB ANC17LA006Accident · Minor injuriesLimited investigationFinal reportPiper PA32R · Bethel, AKA total loss of engine power due to oil starvation, which resulted from an oil cooler leak at a fractured brazed seam.NTSB ANC15FA066Accident · 2 fatalField investigationFinal reportCessna 180 · Kasilof, AKThe total loss of engine power for reasons that could not be determined based on postaccident examination and testing.NTSB ANC14LA085Accident · No injuriesLimited investigationFinal reportCessna TU206 · Deadhorse, AKThe application of insufficient torque to the engine cylinder through bolts during the replacement of the No. 1 cylinder, which resulted in the displacement of the No. 2 bearing, oil starvation, and a catastrophic engine failure.NTSB ANC13LA102Accident · No injuriesLimited investigationFinal reportPiper J3L-65 · Nondalton, AKThe fracture and subsequent failure of the No. 4 cylinder exhaust valve during cruise flight, which resulted in a total loss of engine power.NTSB ANC13LA079Accident · No injuriesLimited investigationFinal reportPiper PA-18-150 · Paxson, AKThe partial loss of engine power due to a loose throttle cable clamp.NTSB ANC13LA012Accident · Minor injuriesLimited investigationFinal reportCessna 208B · Mekoryuk, AKThe total loss of engine power as a result of a fractured first-stage compressor blade due to fatigue cracking. The source of the fatigue crack could not be determined due to secondary damage sustained to the fracture surface.NTSB ANC12LA075Accident · No injuriesLimited investigationFinal reportPiper PA-18-150 · Kenai, AKThe in-flight separation of a propeller tip due to an unauthorized and undocumented propeller repair.NTSB ANC09LA065Accident · No injuriesLimited investigationFinal reportNoorduyn UC-64A · Akiachak, AKThe loss of engine power due to the failure of a crankshaft component, resulting in an off-airport landing.NTSB ANC09LA009Accident · Minor injuriesLimited investigationFinal reportConstrucciones Aeronauticas CASA-212 · Toksook Bay, AKThe flight crew’s inability to adjust/increase power to the right engine during the landing approach due to an in-flight disconnect of the engine power control linkage, resulting in a loss of control of the airplane. Contributing to the accident was the…NTSB ANC08LA097Accident · Serious injuriesLimited investigationFinal reportPiper PA-31-350 · Aniak, AKA partial loss of engine power during takeoff due to a failure of the left engine's turbocharger as a result of the failure of a turbine shaft bearing. Contributing to the accident was unsuitable terrain for a forced landing.NTSB ANC08IA092Incident · No injuriesIncident investigationFinal reportSaab-Scania Saab 340B · Anchorage, AKThe failure of one of the stage 1 gas generator rotor blades due to high-cycle fatigue, resulting in a contained engine failure during the takeoff roll.NTSB ANC08LA089Accident · No injuriesLimited investigationFinal reportDehavilland DHC-3 · Iliamna, AKA total loss of engine power due to the separation of the number 8 cylinder from the engine, which separated an oil line, resulting in a loss of oil and oil pressure. Contributing to the accident was the float-equipped airplane's forced landing on a road.