Final NTSB investigations
27 cases where the sequence of events included Uncontained engine failure.
Cases per year
| 2008 | 1 |
|---|---|
| 2009 | 1 |
| 2010 | 1 |
| 2011 | 4 |
| 2012 | 3 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 3 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 3 |
| 2020 | 1 |
| 2023 | 1 |
| 2024 | 2 |
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.\"completionStatus\" = 'Completed'
AND c.\"mKey\" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s.\"tier2Number\" = '343' 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."completionStatus" = 'Completed' AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '343' 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 ENG24LA028Incident · No injuriesClass 3 · LimitedFinal reportBell 407 · Oktaha, OKThe loss of engine power due to high cycle fatigue failure of a power turbine stage 3 turbine wheel blade. The resulting engine imbalance caused a decoupling of the gas producer stage 1 and stage 2 turbine wheels leading to a stage 1 turbine overspeed and…NTSB ENG24LA014Incident · No injuriesClass 3 · LimitedFinal reportBoeing 787 · Singapore, SingaporeThe uncontained left engine failure was caused by the failure and liberation of the HPT stage 1 aft blade retainer as a result of a fatigue crack in the upper collet radius that originated from a surface connected cluster of Oxide/Carbonitride/Nitride/Carbide…NTSB ENG23LA034Incident · No injuriesClass 3 · LimitedFinal reportHall Lester R Legacy · Rochester, MNMechanically distressed reduction gears causing an engine overspeed and turbine blade tensile overload and subsequent uncontainment. Contributing to the uncontainment was the operator’s use of the engine after knowingly purchasing the engine in an…NTSB ENG21LA011Incident · No injuriesClass 3 · LimitedFinal reportCessna 501 · Opa Locka, FLAn uncontained left engine failure caused by a low cycle fatigue crack that originated from a manufacturing machining groove on the high pressure compressor impeller aft face. Contributing to the incident was service bulletin borescope inspection criteria…NTSB ENG18IA036IncidentClass 3 · IncidentFinal reportBoeing 757 · Atlanta, GAA right engine turbine uncontainment resulting from failure of the high pressure turbine (HPT) lenticular seal due to a fatigue crack originating from an overheated region at a knife edge tip. Contributing to the failure was Pratt & Whitney’s decision to…NTSB CEN18FA259Accident · Serious injuriesField investigationFinal reportEurocopter Deutschland EC135 P1 · Chicago, ILThe pilot's inadvertent disabling of the No. 1 and No. 2 engines' electronic engine control systems, which resulted in engine and rotor overspeed conditions, a subsequent autorotation, and a hard landing. Contributing to the accident were the pilot's…NTSB CEN18LA127Accident · Minor injuriesLimited investigationFinal reportMX MXS · Fulton, TXA total loss of engine power due to the fatigue failure of the crankshaft, which resulted in the pilot’s forced landing to an abandoned airport and the airplane’s subsequent impact with debris on the runway.NTSB WPR18LA051Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA 32-300 · Hinesville, GAA total loss of engine power due to the failure of a connecting rod.NTSB ENG17IA027Incident · No injuriesIncident investigationFinal reportBoeing 737 7H4 · Washington, DCThe failure the control alternator gearshaft, which disconnected the accessory gearbox from the rest of the engine and resulted in an uncommanded in-flight shutdown of the left engine and subsequent flight diversion. The control alternator gearshaft failed…NTSB ENG17IA006Incident · No injuriesIncident investigationFinal reportBombardier CL 600 2C10 · Kansas, ILThe probable cause of the uncontained No. 1 (left) engine failure was a separated high pressure turbine 2nd stage blade that failed due to a fatigue crack that originated below the blade platform from an area of corrosion.NTSB DCA17FA021Accident · Serious injuriesClass 1 · FieldFinal reportBoeing 767 · Chicago, ILThe failure of the high-pressure turbine (HPT) stage 2 disk, which severed the main engine fuel feed line and breached the right main wing fuel tank, releasing fuel that resulted in a fire on the right side of the airplane during the takeoff roll. The HPT…NTSB DCA15FA185Accident · Serious injuriesField investigationFinal reportBoeing Boeing 777-236 · Las Vegas, NVThe failure of the left engine high-pressure compressor (HPC) stage 8-10 spool, which caused the main fuel supply line to become detached from the engine main fuel pump and release fuel, resulting in a fire on the left side of the airplane. The HPC stage 8-10…NTSB ENG15IA017Incident · No injuriesIncident investigationFinal reportBoeing 707 338C · Victorville, CAthe fracture of one 1st stage turbine blade from a high cycle fatigue crack that originated from a break in the coating on the leading edge of the blade. The cause for the break in the coating could not be determined. Contributing to the uncontained release…NTSB ERA15LA138Accident · No injuriesLimited investigationFinal reportBell 206 · Sevierville, TNAn uncontained engine failure, which resulted from insufficient lubrication of the No. 4 bearing due to carbon buildup on the filter screen of the bearing's oil supply nozzle.NTSB ENG14IA013Incident · No injuriesIncident investigationFinal reportRaytheon 400A · Sugar Land, TXThe probable cause of the uncontained No. 2 engine failure on the Raytheon Beechjet 400A was a yellow-crowned night-heron birdstrike that resulted in fan blade contact with the inlet case and rub induced excitation of a previously unidentified natural…NTSB ENG13IA036Incident · No injuriesIncident investigationFinal reportBoeing Company, Long Beach Div Boeing MD-11 · Aguadilla, PRan insufficiently robust flange attachment hardware design, which failed to contain engine components that were liberated during an LPT mechanical failure, resulting in engine/nacelle uncontainment. A factor in the incident was the lack of a module-level LPT…NTSB CEN13LA378Accident · No injuriesLimited investigationFinal reportBell 206B · St Louis, MOThe loss of engine power due to the separation of compressor blades, which resulted from fatigue cracking.NTSB ENG13IA005Incident · No injuriesIncident investigationFinal reportBoeing MD-88 · Atlanta, GAThe 4th stage turbine blade separation that resulted in an uncontained release of low pressure turbine blade material was Delta Air Lines' repair process for the turbine blades' tip shrouds. It was not possible to identify the part of the repair process that…NTSB CEN12LA235Accident · No injuriesLimited investigationFinal reportEurocopter SA315B · Alva, OKFailure of the current and previous operators to comply with the manufacturer's maintenance procedures for operation in sandy environments, which resulted in turbine case erosion and the subsequent uncontained engine failure.NTSB ENG12IA012Incident · No injuriesIncident investigationFinal reportMcdonnell Douglas MD-10-30F · Portland, ORThe fracture of the fan mid shaft due to a stress corrosion cracking initiated by local regions of corrosion pitting, which resulted from oil migration within the shaft and its subsequent degradation.NTSB ENG12IA003Incident · No injuriesIncident investigationFinal reportBoeing 747-451 · Detroit, MIThe penetration of turbine blade fragments through the rear turbine case, which punctured the No. 4 bearing oil pressure supply tube, allowing misted oil to contact the hot engine case and ignite the undercowl fire. Contributing to the incident was the…NTSB ENG12IA001Incident · No injuriesIncident investigationFinal reportBoeing 757-251 · Atlanta, GAthe return to service of overhauled airplane engine parts with undetected fatigue cracks, resulting in complete loss of engine power and uncontained engine failure. A contributing factor was the inadequate diffuser and HPT case inspection procedure.NTSB ENG11IA043Incident · No injuriesIncident investigationFinal reportMcdonnell Douglas DC-9-51 · Atlanta, GAThe probable cause of the No. 2 engine failure and subsequent aborted takeoff was the high cycle fatigue failure of a fan blade near the blade root that resulted in extensive low pressure compressor damage and compressor case breach.NTSB ENG11IA032Incident · No injuriesIncident investigationFinal reportDehavilland DHC-6-300 · Peach Springs, AZA quality control failure in the Sungear, Inc. manufacturing and quality control process allowed sungears with surface finishes of the root fillet radius of the spline that did not conform to the drawing specifications to be released. The surface finish…NTSB ENG10IA037Incident · No injuriesIncident investigationFinal reportDouglas DC9 · Minneapolis, MNThe failure of the facility that overhauled the 1st stage fan blade to properly restore the leading edge, which caused a flutter mode resulting in a fatigue crack and fracture of the fan blade.NTSB ENG09IA004Incident · No injuriesIncident investigationFinal reportMcdonnell-Douglas DC-10-30 · Bogota, ColombiaFailure of the low pressure turbine stage 3 disk due to a design that is vulnerable to high pressure turbine unbalance-induced synchronous vibration that cannot be detected in flight, and the subsequent uncontained engine failure.NTSB ENG08IA030IncidentIncident investigationFinal reportBoeing B747 · Jeddah, Saudi ArabiaFailure of the low pressure turbine stage 3 disk due to a design that is vulnerable to high pressure turbine unbalance-induced synchronous vibration that cannot be detected in flight, and the subsequent uncontained engine failure.