# NTSB investigations: Compressor section NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 1 of 2 · 53 cases ## Latest cases - [NTSB ENG25WA015](https://openairdocs.org/ntsb/ENG25WA015.md): Bombardier BD100 1A10 · Nassau, Bahamas · Incident · Class 5 · Foreign · Jan 20, 2025 · CS-CHJ · No damage - [NTSB CEN25FA006](https://openairdocs.org/ntsb/CEN25FA006.md): Beech C99 · Norfolk, NE · Accident · 1 fatal · Class 3 · Field · Final report · Oct 8, 2024 · N130GP · Destroyed > The pilot’s failure to maintain adequate airspeed following a partial loss of engine power during takeoff, which resulted in a loss of airplane control. Contributing to the accident was the fatigue failure of the compressor turbine fan disk blade. - [NTSB CEN23LA317](https://openairdocs.org/ntsb/CEN23LA317.md): Grumman G-164A · Patoka, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 22, 2023 · N9892 · Substantial damage > A partial loss of engine power due to the failure of two compressor turbine blades as a result of the engine operating near or above the engine’s operating limits for an undetermined amount of time beyond the recommended engine’s TBO limit, which led to… - [NTSB WPR23LA278](https://openairdocs.org/ntsb/WPR23LA278.md): Aerospatiale AS-355E Twin Star · Farmington, UT · Accident · No injuries · Class 3 · Limited · Final report · Jul 19, 2023 · N102UM · Substantial damage > The premature failure of one of the No. 2 engine compressor bleed valve, which resulted in a partial loss of power to that engine. - [NTSB ENG23LA030](https://openairdocs.org/ntsb/ENG23LA030.md): Gulfstream Aerospace G-IV · Sioux City, IA · Incident · No injuries · Class 3 · Limited · Final report · Jun 17, 2023 · N926TT · Minor damage > A No. 2 (right) engine failure due to a spinner fairing separation and subsequent impact with the fan blades that resulted in a midspan fracture of one fan blade. The spinner fairing separated as a result of a fatigue crack that originated from the heat… - [NTSB ENG22LA002](https://openairdocs.org/ntsb/ENG22LA002.md): Airbus A320-271N · Atlantic City, NJ · Incident · Minor injuries · Class 3 · Limited · Final report · Oct 2, 2021 · N922NK · Minor damage > The ingestion of a bird into the right engine during the takeoff roll caused a fan blade to fracture near the blade platform resulting in high fan blade off loads and engine vibrations sufficient to result in an eventual failure of a fuel tube in the right… - [NTSB ERA21LA368](https://openairdocs.org/ntsb/ERA21LA368.md): Hughes 369 · Ash, NC · Accident · No injuries · Class 3 · Limited · Final report · Sep 17, 2021 · N420AT · Substantial damage > A partial loss of engine power due to corrosion and erosion damage to the engine’s compressor section components. - [NTSB ERA21LA287](https://openairdocs.org/ntsb/ERA21LA287.md): Piper PA46-500TP · Manteo, NC · Accident · No injuries · Class 3 · Limited · Final report · Jul 6, 2021 · N31062 · Substantial damage > The improperly secured pneumatic compressor discharge air (P3) line coupling nut on the engine, which ultimately allowed the nut to back off resulting in a partial loss of engine power. - [NTSB DCA21FA085](https://openairdocs.org/ntsb/DCA21FA085.md): Boeing 777-222 · Broomfield, CO · Incident · No injuries · Class 3 · Field · Final report · Feb 20, 2021 · N772UA · Minor damage > The fatigue failure of the right engine fan blade. Contributing to the fan blade failure was the inadequate inspection of the blades, which failed to identify low-level indications of cracking, and the insufficient frequency of the manufacturer’s inspection… - [NTSB ERA21FA130](https://openairdocs.org/ntsb/ERA21FA130.md): Bell 206 · St Thomas, CB · Accident · 4 fatal · Class 3 · Field · Final report · Feb 15, 2021 · N13AT · Destroyed > A total loss of engine power due to fatigue failure of two of the stage 3 compressor blades. Contributing to the failure of the compressor blades was the failure of maintenance personnel to inspect the compressor at the recommended interval for operation in… - [NTSB ENG21LA011](https://openairdocs.org/ntsb/ENG21LA011.md): Cessna 501 · Opa Locka, FL · Incident · No injuries · Class 3 · Limited · Final report · Dec 31, 2020 · N75TL · Minor damage > An 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 WPR20LA247](https://openairdocs.org/ntsb/WPR20LA247.md): Bell OH58A · Holtville, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 31, 2020 · N901XV · Substantial damage > The total loss of engine power due to the decoupling of the engine's turbine and compressor sections, which resulted from improper maintenance. - [NTSB ENG20LA015](https://openairdocs.org/ntsb/ENG20LA015.md): Airbus A220 · Bordeaux, France · Incident · No injuries · Class 4 · Limited · Final report · Feb 12, 2020 · YL-AAU · No damage > A No. 1 (left) engine low pressure compressor (LPC) stage 1 integrally bladed rotor (IBR) separation due to a high cycle fatigue crack (HCF) that originated at the runout of an airfoil leading edge root radius. The HCF crack developed because of a… - [NTSB CEN20LA073](https://openairdocs.org/ntsb/CEN20LA073.md): Hiller UH 12E · Dinosaur, CO · Accident · No injuries · Class 3 · Limited · Final report · Feb 1, 2020 · N7173S · Substantial damage > Failure of a S4 compressor blade due to a fatigue crack that likely initiated at a corrosion pit. Contributing to the accident was maintenance personnel’s failure to detect the corrosion pits during maintenance. - [NTSB ENG20LA001](https://openairdocs.org/ntsb/ENG20LA001.md): Airbus BD-500-1A11 (CS300) · West Flanders Province, Belgium · Incident · Class 3 · Limited · Final report · Oct 15, 2019 · HB-JCC · Minor damage > A No. 1 (left) engine low pressure compressor (LPC) stage 1 integrally bladed rotor (IBR) separation due to a high cycle fatigue crack (HCF) that originated at the runout of an airfoil leading edge root radius. The HCF crack developed because of a… - [NTSB ENG19IA034](https://openairdocs.org/ntsb/ENG19IA034.md): Airbus A220 · Côte-d'Or Region, France · Incident · No injuries · Class 3 · Incident · Final report · Sep 16, 2019 · HB-JCA · No damage > A No. 1 (left) engine low pressure compressor (LPC) stage 1 integrally bladed rotor (IBR) separation due to a high cycle fatigue crack (HCF) that originated at the runout of an airfoil leading edge root radius. The HCF crack developed because of a… - [NTSB ERA19LA238](https://openairdocs.org/ntsb/ERA19LA238.md): Aero Commander S2R · Cuthbert, GA · Accident · No injuries · Class 3 · Limited · Final report · Jul 25, 2019 · N5680X · Substantial damage > The failure of the No. 1 bearing due to fatigue which resulted in a partial loss of engine power. The reason for the bearing failure could not be determined based on the available information. - [NTSB ENG19IA029](https://openairdocs.org/ntsb/ENG19IA029.md): Airbus A220 · Perrigny-sur-Armançon, France · Incident · No injuries · Class 3 · Incident · Final report · Jul 25, 2019 · HB-JCM · Minor damage > A No. 1 (left) engine low pressure compressor (LPC) stage 1 integrally bladed rotor (IBR) separation due to a high cycle fatigue crack (HCF) that originated at the runout of an airfoil leading edge root radius. The HCF crack developed as a result of a… - [NTSB ERA19LA152](https://openairdocs.org/ntsb/ERA19LA152.md): Bell 206 · Dublin, GA · Accident · No injuries · Class 3 · Limited · Final report · Apr 15, 2019 · N395AE · Substantial damage > A partial loss of engine power on takeoff due to separation of the diffuser assembly as a result of incomplete braze joint surfaces on the vane airfoils. - [NTSB WPR19LA087](https://openairdocs.org/ntsb/WPR19LA087.md): MD Helicopter 369 · Kukuihaele, HI · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 21, 2019 · N506PH · Substantial damage > The partial loss of engine power due to corrosion in the engine bleed valve due to wash solution intrusion. Contributing to the accident was the installation of a bushing manufactured to incorrect dimensions in the bleed valve, and the uneven terrain at the… - [NTSB ENG19IA013](https://openairdocs.org/ntsb/ENG19IA013.md): Boeing 737 · Orlando, FL · Incident · No injuries · Incident investigation · Final report · Feb 21, 2019 · N30401 · No damage > A No. 1 (left) engine high pressure compressor stage 2 blade separation. The blade separated due to a mixed-mode fatigue crack that originated on a blade disk post and was initiated by a misaligned (out-of-schedule) high pressure compressor stage 1 variable… - [NTSB DCA18MA142](https://openairdocs.org/ntsb/DCA18MA142.md): Boeing 737 7H4 · Philadelphia, PA · Accident · 1 fatal · Class 1 · Major · Final report · Apr 17, 2018 · N772SW · Substantial damage > A low-cycle fatigue crack in the dovetail of fan blade No. 13, which resulted in the fan blade separating in flight and impacting the engine fan case at a location that was critical to the structural integrity and performance of the fan cowl structure. This… - [NTSB CEN17LA309](https://openairdocs.org/ntsb/CEN17LA309.md): Air Tractor AT-802A · Galesburg, IL · Accident · No injuries · Class 3 · Limited · Final report · Aug 9, 2017 · N528MB · Substantial damage > A total loss of engine power due to the fracture of a single 1st stage compressor rotor airfoil in high-cycle fatigue as a result of the erosion and thinning of the airfoil's leading edge. Contributing to the fractured airfoil and loss of engine power was the… - [NTSB ENG17IA026](https://openairdocs.org/ntsb/ENG17IA026.md): Boeing 747 451 · Tokyo, Japan · Incident · No injuries · Incident investigation · Final report · Jun 7, 2017 · N668US · No damage > The PW4056 engine lost power due to the fatigue fracture of a 5th stage compressor blade. The cause of the fatigue fracture could not be determined. - [NTSB ENG17IA008](https://openairdocs.org/ntsb/ENG17IA008.md): Bombardier CL 600 2B19 · Baltimore, MD · Incident · No injuries · Incident investigation · Final report · Jan 23, 2017 · N8986B · No damage > A Bombardier CRJ200 No. 2 engine failure due to the separation of a fan blade airfoil at a low cycle fatigue crack that originated at the forward fan blade pin hole attachment. The separated fan blade had previously undergone a hot form repair and both… - [NTSB DCA16FA217](https://openairdocs.org/ntsb/DCA16FA217.md): Boeing 737-700 · Pensacola, FL · Accident · No injuries · Field investigation · Final report · Aug 27, 2016 · N766SW · Substantial damage > A low-cycle fatigue crack in the dovetail of fan blade No. 23, which resulted in the fan blade separating in flight and impacting the fan case. This impact caused the fan blade to fracture into fragments that traveled farther than expected into the inlet,… - [NTSB DCA15FA185](https://openairdocs.org/ntsb/DCA15FA185.md): Boeing Boeing 777-236 · Las Vegas, NV · Accident · Serious injuries · Field investigation · Final report · Sep 8, 2015 · G-VIIO · Substantial damage > The 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 ERA15LA280](https://openairdocs.org/ntsb/ERA15LA280.md): MD Helicopter 369FF · Vega Baja, PR · Accident · No injuries · Class 3 · Limited · Final report · Jul 24, 2015 · N5842Z · Substantial damage > A total loss of engine power due to insufficient lubrication to the engine's No. 2 bearing, which resulted in the failure of the bearing and a subsequent forced landing. - [NTSB WPR14TA236](https://openairdocs.org/ntsb/WPR14TA236.md): Mcdonnell Douglas Helicopter 369E · Mesa, AZ · Accident · No injuries · Final report · Jun 8, 2014 · N504MP · Substantial damage > The loss of engine power during cruise flight due to the decoupling of the engine’s turbine and compressor sections. Contributing to the decoupling was the excessive wear of the turbine-to-compressor coupling components due maintenance personnel’s placement… - [NTSB ERA14LA248](https://openairdocs.org/ntsb/ERA14LA248.md): Bell Helicopter Textron Canada 206 L4 · Beverly, MA · Accident · No injuries · Limited investigation · Final report · May 21, 2014 · N55SL · Substantial damage > Maintenance personnel’s inadequate inspection of the engine’s outer combustion case, which resulted in the failure of the case due to fatigue cracks that initiated on the inside surface of the case and the subsequent total loss of engine power. - [NTSB ENG14IA011](https://openairdocs.org/ntsb/ENG14IA011.md): Raytheon 400A · Rochester, NY · Incident · No injuries · Incident investigation · Final report · Mar 13, 2014 · N193BJ · Minor damage > The probable cause of the uncontained No. 2 engine failure on the Raytheon Beechjet 400A was a herring gull birdstrike that resulted in fan blade contact with the inlet case and rub induced excitation of a previously unidentified natural frequency (resonance)… - [NTSB ENG13WA040](https://openairdocs.org/ntsb/ENG13WA040.md): Sikorsky S76 - A · Macae, Brazil · Incident · No injuries · Foreign investigation · Aug 7, 2013 · PT-YSM · Minor damage > While the helicopter was running on the runway, the pilots noticed that the number two engine parameters were below prescribed values and decided to abort the take-off. After leaving the runway and entering the company apron, the pilots saw company mechanics… - [NTSB CEN13LA473](https://openairdocs.org/ntsb/CEN13LA473.md): Air Tractor AT-502B · Nauvoo, IL · Accident · No injuries · Limited investigation · Final report · Jul 15, 2013 · N6113C · Substantial damage > A fatigue failure of an engine compressor turbine blade, which resulted in extensive secondary engine damage and a complete loss of engine power. - [NTSB ERA13IA313](https://openairdocs.org/ntsb/ERA13IA313.md): Bell Helicopter Textron Canada 206 · New York, NY · Incident · No injuries · Incident investigation · Final report · Jun 30, 2013 · N405MR · Minor damage > The improper maintenance decision to adjust the engine oil pressure regulator valve in response to high oil pressure indications rather than to properly troubleshoot the anomaly, which then allowed an existing oil supply path blockage to increase and led to… - [NTSB CEN13LA378](https://openairdocs.org/ntsb/CEN13LA378.md): Bell 206B · St Louis, MO · Accident · No injuries · Limited investigation · Final report · May 24, 2013 · N297CA · Substantial damage > The loss of engine power due to the separation of compressor blades, which resulted from fatigue cracking. - [NTSB ANC13LA012](https://openairdocs.org/ntsb/ANC13LA012.md): Cessna 208B · Mekoryuk, AK · Accident · Minor injuries · Limited investigation · Final report · Dec 3, 2012 · N169LJ · Substantial damage > The 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 CEN12IA096](https://openairdocs.org/ntsb/CEN12IA096.md): Bell Helicopter Textron Canada 407 · Gulf Of Mexico · Incident · No injuries · Incident investigation · Final report · Dec 1, 2011 · N435PH · No damage > The failure of the compressor section No. 2 bearing due to false brinnelling and fatigue. - [NTSB ENG11IA051](https://openairdocs.org/ntsb/ENG11IA051.md): Boeing 757-222 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Sep 26, 2011 · N526UA · Minor damage > **This probable cause was modified on 4/5/2012. Please see the public docket for this accident to view the original probable cause.** The initial damage to the fan blades was caused by the ingestion of a Red-Tailed Hawk that caused one or more fan blades to… - [NTSB WPR11LA379](https://openairdocs.org/ntsb/WPR11LA379.md): Bell 47G-3B-2 · Los Banos, CA · Accident · No injuries · Limited investigation · Final report · Aug 14, 2011 · N475AL · Substantial damage > The pilot’s inadequate preflight, and contamination of both the engine compressor section and the main rotor blades, which resulted in reduced performance of the engine and rotor system. - [NTSB ENG11IA043](https://openairdocs.org/ntsb/ENG11IA043.md): Mcdonnell Douglas DC-9-51 · Atlanta, GA · Incident · No injuries · Incident investigation · Final report · Aug 6, 2011 · N676MC · Minor damage > The 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 WPR11LA320](https://openairdocs.org/ntsb/WPR11LA320.md): Schweizer G-164B · Yuba City, CA · Accident · No injuries · Limited investigation · Final report · Jul 9, 2011 · N7503L · Substantial damage > High-cycle fatigue on the 1st-stage compressor blade retaining ring, which resulted in the ring’s fracture and a subsequent loss of engine power. - [NTSB CEN11LA252](https://openairdocs.org/ntsb/CEN11LA252.md): Bell 206L-3 · (Gulf of Mexico) · Accident · Minor injuries · Limited investigation · Final report · Mar 24, 2011 · N32041 · Substantial damage > The loss of engine power due to an engine compressor stall as a result of ingesting methane gas during takeoff. - [NTSB ENG11IA021](https://openairdocs.org/ntsb/ENG11IA021.md): Bombardier DHC 8 402 · Pittsburgh, PA · Incident · No injuries · Incident investigation · Final report · Mar 17, 2011 · N339NG · Minor damage > the flight crew's delay in shutting down the left engine following an engine oil pressure master warning, which led to a hard rub inside the engine that served as an ignition point for a titanium fire. Contributing to the event was a PW150 No. 5 seal design… - [NTSB CEN10LA431](https://openairdocs.org/ntsb/CEN10LA431.md): Bell 47G-4A · Rochester, MN · Accident · 1 fatal · Limited investigation · Final report · Jul 24, 2010 · N124SH · Substantial damage > The total loss of engine power due to a high-cycle fatigue fracture of a first-stage compressor blade. The reason for the fracture could not be determined during postaccident examination. - [NTSB ENG10IA037](https://openairdocs.org/ntsb/ENG10IA037.md): Douglas DC9 · Minneapolis, MN · Incident · No injuries · Incident investigation · Final report · Jun 15, 2010 · N671MC · Minor damage > The 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 ERA10IA094](https://openairdocs.org/ntsb/ERA10IA094.md): Cessna 208B · Rome, NY · Incident · No injuries · Incident investigation · Final report · Dec 3, 2009 · N701FX · No damage > The operator's inadequate engine wash intervals, which resulted in compressor turbine blade sulphidation and subsequent turbine blade failure. - [NTSB CEN09LA534](https://openairdocs.org/ntsb/CEN09LA534.md): WSK PZL Mielec M-18A · Audubon, IA · Accident · No injuries · Limited investigation · Final report · Aug 18, 2009 · N2065B · Substantial damage > A loss of engine power due to failure of the compressor turbine resulting from exposure to elevated operating temperatures for undetermined reasons. - [NTSB ENG09IA002](https://openairdocs.org/ntsb/ENG09IA002.md): Boeing 777 · Atlanta, GA · Incident · No injuries · Incident investigation · Final report · Jan 2, 2009 · N864DA · Minor damage > The fan blade fractured due to a fatigue crack that was the result of the combination of the breakdown of the fan blade lubrication system and residual fatigue life usage following the last overhaul of the fan blade. Contributing to the fracture was the… - [NTSB ERA09LA031](https://openairdocs.org/ntsb/ERA09LA031.md): Hughes 369D · Carroll Township, PA · Accident · Serious injuries · Limited investigation · Final report · Oct 30, 2008 · N606AS · Substantial damage > A total loss of engine power due to the improper assembly of the compressor discharge tubes to the combustion liner. - [NTSB CHI08CA257](https://openairdocs.org/ntsb/CHI08CA257.md): Air Tractor AT-400A · Luverne, MN · Accident · No injuries · Data collection · Final report · Aug 16, 2008 · N7307W · Substantial damage > The failure of the compressor turbine blades which resulted in the loss of power. Factors associated with the accident were the low altitude and the trees. Next page: https://openairdocs.org/ntsb-findings/01057230/cases.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01057230')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/01057230/cases --- 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.