# Uncontained engine failure - Type: NTSB defining event - NTSB code: 343 - CICTT category: System/Component Failure (Powerplant) - Defining event in: 45 cases - In the sequence of: 47 cases - Fatal cases: 1 - All cases: https://openairdocs.org/ntsb-events/343/cases.md - Cases with it anywhere in the sequence: https://openairdocs.org/ntsb-events/343/sequence.md - Page: https://openairdocs.org/ntsb-events/343 ## Cases per year (defining / in the sequence) - 2008: 1 / 1 - 2009: 1 / 1 - 2010: 1 / 1 - 2011: 4 / 4 - 2012: 4 / 4 - 2013: 2 / 2 - 2014: 0 / 1 - 2015: 5 / 5 - 2016: 4 / 4 - 2017: 6 / 6 - 2018: 4 / 5 - 2019: 1 / 1 - 2020: 2 / 2 - 2021: 1 / 1 - 2022: 1 / 1 - 2023: 2 / 2 - 2024: 4 / 4 - 2026: 2 / 2 ## Phase of flight - Takeoff-rejected takeoff: 12 cases - Initial climb: 8 cases - Enroute: 6 cases - Enroute-cruise: 5 cases - Takeoff: 4 cases - Enroute-climb to cruise: 3 cases - Other: 1 cases - Emergency descent: 1 cases - Approach-VFR pattern final: 1 cases - Approach: 1 cases ## In the probable cause of these cases - [Turbine section](https://openairdocs.org/ntsb-findings/01057250) (Aircraft): 11 cases - [Compressor section](https://openairdocs.org/ntsb-findings/01057230) (Aircraft): 4 cases - [Equipment manufacture](https://openairdocs.org/ntsb-findings/04013010) (Organizational issues): 2 cases - [Reduction gear and shaft](https://openairdocs.org/ntsb-findings/01057210) (Aircraft): 2 cases - [Oversight of reg compliance](https://openairdocs.org/ntsb-findings/04032040) (Organizational issues): 1 cases - [Oversight of maintenance](https://openairdocs.org/ntsb-findings/04032020) (Organizational issues): 1 cases - [Task design](https://openairdocs.org/ntsb-findings/04011015) (Organizational issues): 1 cases - [Lack of communication](https://openairdocs.org/ntsb-findings/02063510) (Personnel issues): 1 cases - [Use of policy/procedure](https://openairdocs.org/ntsb-findings/02063032) (Personnel issues): 1 cases - [Installation](https://openairdocs.org/ntsb-findings/02062035) (Personnel issues): 1 cases ## Aircraft models (registry) - [Mcdonnell Douglas DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51): 2 cases - [Eurocopter SA315B](https://openairdocs.org/model/eurocopter-sa315b): 1 cases - [Piper PA-32-300](https://openairdocs.org/model/piper-pa-32-300): 1 cases - [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323): 1 cases - [Mcdonnell Douglas MD-10-30F](https://openairdocs.org/model/mcdonnell-douglas-md-10-30f): 1 cases - [Mcdonnell Douglas MD-88](https://openairdocs.org/model/mcdonnell-douglas-md-88): 1 cases - [Mcdonnell-Douglas DC-10-30](https://openairdocs.org/model/mcdonnell-douglas-dc-10-30): 1 cases - [Dehavilland DHC-6-300](https://openairdocs.org/model/dehavilland-dhc-6-300): 1 cases - [Cirrus Design SF50](https://openairdocs.org/model/cirrus-design-sf50): 1 cases - [Bombardier CL-600-2C10](https://openairdocs.org/model/bombardier-cl-600-2c10): 1 cases ## Newest cases - [NTSB ENG26LA026](https://openairdocs.org/ntsb/ENG26LA026), Jun 2, 2026: Cirrus SF50 (N129KA), Athens, GA, incident, minor damage, investigation ongoing - [NTSB ENG26WA025](https://openairdocs.org/ntsb/ENG26WA025), Mar 30, 2026: Airbus A330-323 (N813NW), Sao Paulo, Brazil, incident, substantial damage - [NTSB ERA25FA001](https://openairdocs.org/ntsb/ERA25FA001), Oct 1, 2024: Beech 95 (N5868S), Crystal River, FL, destroyed, 1 fatal, investigation ongoing - [NTSB ENG24LA028](https://openairdocs.org/ntsb/ENG24LA028), Jul 26, 2024: Bell 407 (N793SF), Oktaha, OK, incident, minor damage. Probable cause: The 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… - [NTSB DCA24WA201](https://openairdocs.org/ntsb/DCA24WA201), Jun 4, 2024: Boeing 777FZB (N714SA), Narita, Japan, incident - [NTSB ENG24LA014](https://openairdocs.org/ntsb/ENG24LA014), May 14, 2024: Boeing 787 (N27957), Singapore, Singapore, incident, minor damage. Probable cause: The 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… - [NTSB ENG23WA041](https://openairdocs.org/ntsb/ENG23WA041), Sep 17, 2023: Airbus A320 (EI-KBK), Almaty, Kazakhstan, incident, minor damage - [NTSB ENG23LA034](https://openairdocs.org/ntsb/ENG23LA034), Jul 20, 2023: Hall Lester R Legacy (N707MM), Rochester, MN, incident, minor damage. Probable cause: Mechanically 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… - [NTSB ENG23WA008](https://openairdocs.org/ntsb/ENG23WA008), Dec 24, 2022: Airbus A320 (XA-VIO), Guadalajara, Mexico, incident, minor damage - [NTSB ENG21WA018](https://openairdocs.org/ntsb/ENG21WA018), Mar 11, 2021: Airbus A300 (YV560T), Bogota, Colombia, incident, minor damage NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted. Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1). NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.