# Final NTSB investigations: Part(s) separation from AC

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 5 · 216 cases

## Latest cases

- [NTSB ERA26LA289](https://openairdocs.org/ntsb/ERA26LA289.md): Beech A36 · Weston, CT · Accident · No injuries · Class 4 · Limited · Final report · Jul 30, 2026 · N9144Q · Substantial damage
  > The in-flight opening of the engine cowling, which resulted in engine baffling separating from the airplane and impacting the right elevator.
- [NTSB ERA26LA193](https://openairdocs.org/ntsb/ERA26LA193.md): Bell UH1 · Enterprise, AL · Accident · No injuries · Class 4 · Limited · Final report · Apr 4, 2026 · N75140 · Substantial damage
  > The in-flight separation of a turn lock fastener stud, which resulted in substantial damage to one tail rotor blade.
- [NTSB CEN26LA131](https://openairdocs.org/ntsb/CEN26LA131.md): Quad City Challenger · Van Burensburg, IL · Accident · No injuries · Class 4 · Limited · Final report · Feb 28, 2026 · UNREG · Substantial damage
  > Propeller separation due to failure of the propeller attachment bolts.
- [NTSB CEN25LA328](https://openairdocs.org/ntsb/CEN25LA328.md): Vans RV14 · Parker, CO · Accident · Minor injuries · Class 4 · Limited · Final report · Aug 13, 2025 · N29JM · Substantial damage
  > Separation of the right landing gear wheel assembly during landing.
- [NTSB WPR25LA209](https://openairdocs.org/ntsb/WPR25LA209.md): Pipistrel Alpha Trainer · Colorado City, AZ · Accident · No injuries · Class 4 · Limited · Final report · Jul 11, 2025 · N209ZM · Substantial damage
  > The pilot’s exceedance of the airplane’s never-exceed speed (VNE) during maneuvering, which resulted in the in-flight separation of the left flaperon.
- [NTSB ERA25LA236](https://openairdocs.org/ntsb/ERA25LA236.md): Sting Sport TL-2000 · Dunavant, VA · Accident · No injuries · Class 4 · Limited · Final report · Jun 20, 2025 · N878N · Substantial damage
  > The inflight failure of the propeller due to its exceedance of the manufacturer’s overhaul requirement.
- [NTSB ERA25LA204](https://openairdocs.org/ntsb/ERA25LA204.md): Eurocopter Deutschland MBB-BK 117 C-1 · Fort Washington, PA · Accident · Minor injuries · Class 3 · Limited · Final report · May 19, 2025 · N117NC · Substantial damage
  > Maintenance personnel’s failure to identify and replace damaged rivet nuts at the air conditioning louver assembly, which resulted in the separation of the louver assembly from the helicopter, the louver assembly’s impact with the tail rotor, and subsequent…
- [NTSB ANC25LA028](https://openairdocs.org/ntsb/ANC25LA028.md): Piper PA-28-140 · Royal Kunia, HI · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 27, 2025 · N261FC · Substantial damage
  > Improper alteration of the crankshaft propeller flange at an unknown time, which resulted in an in-flight separation of the propeller assembly.
- [NTSB CEN25LA117](https://openairdocs.org/ntsb/CEN25LA117.md): Vans RV-7A · Plainview, TX · Accident · No injuries · Class 3 · Limited · Final report · Mar 10, 2025 · N923ZA · Substantial damage
  > The improper machining of the propeller blade bearing seat, which resulted in an inflight propeller blade fatigue failure. Contributing to the accident was the improper machining of the propeller hub and propeller blade root and machining surface quality…
- [NTSB WPR25LA096](https://openairdocs.org/ntsb/WPR25LA096.md): Cessna 150J · Minersville, UT · Accident · No injuries · Class 3 · Limited · Final report · Feb 16, 2025 · N151GW · Substantial damage
  > The failure of the propeller blade due to fatigue that originated from an impact pit sustained at an unknown time. Contributing to the accident was the failure of unknown maintenance personnel to detect and repair the impact pit before painting the propeller,…
- [NTSB ERA25LA114](https://openairdocs.org/ntsb/ERA25LA114.md): Cessna 172P · Clarksville, TN · Accident · No injuries · Class 3 · Limited · Final report · Feb 3, 2025 · N62112 · Substantial damage
  > The flight instructor’s inadequate preflight inspection of the airplane, which allowed the partially secured engine cowl to separate in flight.
- [NTSB ERA25LA102](https://openairdocs.org/ntsb/ERA25LA102.md): Daniel A Robinson High 6 Berkut 540 · Orlando, FL · Accident · No injuries · Class 4 · Limited · Final report · Jan 20, 2025 · N976DR · Substantial damage
  > The pilot’s failure to verify the canopy latches were in the locked position prior to takeoff.
- [NTSB ERA24LA325](https://openairdocs.org/ntsb/ERA24LA325.md): Flight Design Ctsw · Cuba, NY · Accident · No injuries · Class 4 · Limited · Final report · Jul 23, 2024 · N504CT · Substantial damage
  > A separation of the left main landing gear wheel assembly during landing.
- [NTSB ERA24LA303](https://openairdocs.org/ntsb/ERA24LA303.md): Jones LONG-EZ · Thomasville, GA · Accident · No injuries · Class 3 · Limited · Final report · Jul 10, 2024 · N4JZ · Substantial damage
  > The pilot reported that he was maneuvering around weather at 11,500 ft mean sea level (msl) when he made a rapid descent to 3,500 ft msl to remain clear of clouds. He reported that he did not exceed the airplane’s maneuvering speed during the descent, and…
- [NTSB WPR24LA211](https://openairdocs.org/ntsb/WPR24LA211.md): Beech 58P · Escalante, UT · Accident · No injuries · Class 3 · Limited · Final report · Jun 19, 2024 · N9NS · Substantial damage
  > The failure of the windshield for undetermined reasons.
- [NTSB DCA24LA210](https://openairdocs.org/ntsb/DCA24LA210.md): Boeing 767-316 ER · Milan, IN · Accident · No injuries · Class 4 · Limited · Final report · Jun 17, 2024 · C-FCJU · Substantial damage
  > One or more latches were not fully re-engaged after a service check which resulted in the auxiliary power unit (APU) doors separating from the aircraft during climb out.
- [NTSB WPR24LA122](https://openairdocs.org/ntsb/WPR24LA122.md): Cessna 180A · Nordman, ID · Accident · No injuries · Class 3 · Limited · Final report · Apr 4, 2024 · N5281D · Substantial damage
  > Maintenance personnel's improper installation of the left main landing gear wheel assembly, which resulted in a loss of torque and subsequent separation of the wheel and axle assembly from the main landing gear leg during landing.
- [NTSB CEN24LA128](https://openairdocs.org/ntsb/CEN24LA128.md): Eurocopter Deutschland MBB-BK 117 C-2 · West Lafayette, IN · Accident · No injuries · Class 3 · Limited · Final report · Mar 7, 2024 · N191LL · Substantial damage
  > The failure of maintenance personnel to properly install the tail rotor pitch change slider attachment hardware (T-bolt), which led to the disconnection of the pitch change slider, a loss of tail rotor control, and subsequent hard landing. Contributing to the…
- [NTSB WPR24LA098](https://openairdocs.org/ntsb/WPR24LA098.md): Cessna 182A · Weippe, ID · Accident · No injuries · Class 4 · Limited · Final report · Feb 22, 2024 · N6323B · Substantial damage
  > The pilot’s failure to secure the oil filler cap during the preflight inspection, which resulted in a precautionary landing on the soft surface and subsequent nose over.
- [NTSB ERA24LA109](https://openairdocs.org/ntsb/ERA24LA109.md): Piper PA23 · Louisville, KY · Accident · No injuries · Class 4 · Limited · Final report · Feb 1, 2024 · N1317P · Substantial damage
  > The failure of maintenance personnel to thoroughly inspect and repair the worn-out panel fasteners and fastener holes.
- [NTSB DCA24MA063](https://openairdocs.org/ntsb/DCA24MA063.md): Boeing 737-9 · Portland, OR · Accident · Minor injuries · Class 1 · Major · Final report · Jan 6, 2024 · N704AL · Substantial damage
  > the in-flight separation of the left mid exit door (MED) plug due to Boeing Commercial Airplanes’ failure to provide adequate training, guidance, and oversight necessary to ensure that manufacturing personnel could consistently and correctly comply with its…
- [NTSB ERA24FA075](https://openairdocs.org/ntsb/ERA24FA075.md): Hughes Helicopters 369E · Miami, FL · Accident · 1 fatal · Class 3 · Field · Final report · Dec 27, 2023 · N757TB · Substantial damage
  > Main rotor contact with the tail boom for unknown reasons, resulting in the separation of the tail boom.
- [NTSB WPR24LA051](https://openairdocs.org/ntsb/WPR24LA051.md): Piper PA-28-180 · Mesa, AZ · Accident · No injuries · Class 4 · Limited · Final report · Dec 5, 2023 · N9166J · Substantial damage
  > A failure of the engine cowling right side latch pin and fasteners, which resulted in the partial separation of the engine cowling during flight.
- [NTSB CEN24LA038](https://openairdocs.org/ntsb/CEN24LA038.md): Bede BD-4 · Lowell, IN · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 14, 2023 · N931AS · Substantial damage
  > Fatigue cracking of the propeller blade root, which resulted in the in-flight separation of the propeller blade from its root. Contributing to the accident was the improper machining of the blade root threads, which resulted in chatter/ratchet marks that…
- [NTSB WPR23FA351](https://openairdocs.org/ntsb/WPR23FA351.md): Golden Circle T Bird · Arlington, WA · Accident · 1 fatal · Class 3 · Field · Final report · Sep 22, 2023 · UNREG · Substantial damage
  > A failure of the forward left wing spar due to an improper repair, which resulted in an inflight separation of the left wing. Contributing to the accident was improper maintenance by splicing the wing spar.
- [NTSB CEN23LA296](https://openairdocs.org/ntsb/CEN23LA296.md): Magni M24 · Mineral Point, MO · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 11, 2023 · N123PS · Substantial damage
  > The inflight loss of the engine’s air filter which collided with the propeller which resulted in a vibration.
- [NTSB ERA23LA248](https://openairdocs.org/ntsb/ERA23LA248.md): Raytheon B300 · Melbourne, FL · Accident · No injuries · Class 4 · Limited · Final report · May 26, 2023 · N680CB · Substantial damage
  > An inflight separation of the airplane’s airstair door for undetermined reasons.
- [NTSB CEN23LA218](https://openairdocs.org/ntsb/CEN23LA218.md): Piper J3C · Romeoville, IL · Incident · No injuries · Class 3 · Limited · Final report · Apr 27, 2023 · N6384H · Minor damage
  > The inflight failure of the propeller blade due to fatigue cracking from corrosion pits, initiating at the midpoint of the cambered face.
- [NTSB WPR23LA149](https://openairdocs.org/ntsb/WPR23LA149.md): Stevens Kelly C RV-7 · Morgan, UT · Accident · No injuries · Class 3 · Limited · Final report · Apr 9, 2023 · N17NK · Substantial damage
  > The pilot/builder improperly torqued the propeller attachment bolts while reinstalling the propeller, which resulted in the fatigue failure of the bolts and the separation of the propeller assembly.
- [NTSB ERA23FA174](https://openairdocs.org/ntsb/ERA23FA174.md): Cessna 525B · Gulf of Mexico (Gulf of Mexico) · Accident · No injuries · Class 3 · Field · Final report · Mar 30, 2023 · N869AC · Substantial damage
  > The separation of the left wing extension and winglet for reasons that could not be determined based on the available evidence.
- [NTSB WPR23LA112](https://openairdocs.org/ntsb/WPR23LA112.md): Star Lite SL1 · Corning, CA · Accident · 1 fatal · Class 3 · Limited · Final report · Feb 16, 2023 · UNREG · Destroyed
  > The student pilot’s loss of airplane control during an intentional aerobatic maneuver, which resulted in an inflight separation of the left wing and subsequent impact with the terrain.
- [NTSB ERA23LA013](https://openairdocs.org/ntsb/ERA23LA013.md): Schempp-Hirth Discus CS · Woodstock, VA · Accident · No injuries · Class 3 · Limited · Final report · Oct 8, 2022 · N520RJ · Substantial damage
  > Improper repair of a crack by maintenance personnel, which resulted in a subsequent failure of the glider canopy.
- [NTSB CEN22LA258](https://openairdocs.org/ntsb/CEN22LA258.md): Eurocopter Deutschland EC 135 P2+ · Waukesha, WI · Accident · No injuries · Class 3 · Limited · Final report · Jun 18, 2022 · N226SA · Substantial damage
  > The separation and subsequent ingestion of the fenestron fairing cover into the fenestron blades for undetermined reasons.
- [NTSB ANC22FA041](https://openairdocs.org/ntsb/ANC22FA041.md): Bell 407 · Kalea, HI · Accident · Serious injuries · Class 3 · Field · Final report · Jun 9, 2022 · N402SH · Substantial damage
  > The in-flight separation of the tail boom as a result of abnormal loading and fracture of the upper-left tail boom attachment bolt due to a gap between the upper-left longeron and aft fuselage bulkhead.
- [NTSB CEN22LA250](https://openairdocs.org/ntsb/CEN22LA250.md): Beech 58 · Evansville, IN · Incident · No injuries · Class 3 · Limited · Final report · Jun 8, 2022 · N78KL · Minor damage
  > The failure of the propeller blade due to high-cycle fatigue that originated from damage that occurred at an unknown time. Contributing to the accident was the failure to identify the damage before the accident flight.
- [NTSB ERA22LA231](https://openairdocs.org/ntsb/ERA22LA231.md): Eurocopter AS355 · Palm Beach, FL · Accident · No injuries · Class 4 · Limited · Final report · May 19, 2022 · N448JM · Substantial damage
  > The pilot’s inadequate preflight inspection, which resulted in the unlatched engine cowling opening and being struck by a main rotor blade during flight. Contributing to the accident was the mechanic’s failure to properly secure the cowling following…
- [NTSB ERA22LA187](https://openairdocs.org/ntsb/ERA22LA187.md): Lancair IV · Leicester, MA · Accident · No injuries · Class 3 · Limited · Final report · Apr 10, 2022 · N7KJ · Substantial damage
  > A separation of the window from the airframe for undetermined reasons.
- [NTSB DCA22FA082](https://openairdocs.org/ntsb/DCA22FA082.md): Joby Aero JAS4-2 · Jolon, CA · Accident · No injuries · Class 3 · Field · Final report · Feb 16, 2022 · N542AJ · Substantial damage
  > The separation of a propeller blade during expansion flight testing that resulted in cascading effects to include the separation of multiple propulsion motor/propeller assemblies and the loss of remote pilot control of the aircraft. Contributing to the…
- [NTSB ERA21LA379](https://openairdocs.org/ntsb/ERA21LA379.md): Hawker Beechcraft 400A · Charleston, SC · Accident · No injuries · Class 3 · Limited · Final report · Sep 14, 2021 · N100FN · Substantial damage
  > The in-flight separation of the left engine’s four-panel cowling for reasons that could not be determined based on the available evidence.
- [NTSB CEN21LA450](https://openairdocs.org/ntsb/CEN21LA450.md): Cessna 140 · Caddo Mills, TX · Accident · No injuries · Class 4 · Limited · Final report · Jul 22, 2021 · N84BC · Substantial damage
  > The missing vertical stabilizer hardware, which resulted in a severe uncommanded yawing motion that necessitated an emergency landing, during which the airplane nosed over and sustained substantial damage to the vertical stabilizer.
- [NTSB ERA21LA246](https://openairdocs.org/ntsb/ERA21LA246.md): Honda HA-420 · Kennesaw, GA · Accident · No injuries · Class 3 · Limited · Final report · Jun 4, 2021 · N10XN · Substantial damage
  > The mechanic’s improper installation of the left main wheel assembly.
- [NTSB ERA21LA223](https://openairdocs.org/ntsb/ERA21LA223.md): Zenith Zodiac 601 XL · McKenzie, TN · Accident · No injuries · Class 3 · Limited · Final report · May 15, 2021 · N493TG · Substantial damage
  > The improper installation and inspection of the propeller, which resulted in an in-flight separation of the propeller assembly.
- [NTSB ERA21FA195](https://openairdocs.org/ntsb/ERA21FA195.md): Bell Helicopter Textron Canada 429 · Eden, NC · Accident · 1 fatal · Class 3 · Field · Final report · Apr 28, 2021 · N53DE · Destroyed
  > The impact of the main rotor blades with the tail boom during low-altitude maneuvers, which severed the tail rotor drive shaft and resulted in a loss of control and impact with terrain.
- [NTSB ERA21LA396](https://openairdocs.org/ntsb/ERA21LA396.md): Sonex Waiex · Doylestown, PA · Accident · No injuries · Class 4 · Limited · Final report · Mar 22, 2021 · N220JD · Substantial damage
  > The pilot’s failure to maintain a proper glidepath during landing. Contributing to the accident was his failure to ensure the canopy locks were properly configured prior to flight.
- [NTSB WPR21LA142](https://openairdocs.org/ntsb/WPR21LA142.md): Davis Dan B Lancair Evolution · Phoenix, AZ · Accident · No injuries · Class 3 · Limited · Final report · Mar 18, 2021 · N469KS · Substantial damage
  > A malfunction of the main cabin door latching mechanism for reasons that could not be determined based on the available information.
- [NTSB ERA21LA155](https://openairdocs.org/ntsb/ERA21LA155.md): Socata MS894A · Monroe, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 15, 2021 · N42BF · Substantial damage
  > Maintenance personnel’s failure to properly inspect and maintain the airplane’s engine cowling latches, which resulted in the in-flight separation of the engine cowling and a subsequent forced landing.
- [NTSB WPR21LA108](https://openairdocs.org/ntsb/WPR21LA108.md): Abbett Gerry Lancair Evolution · Saratoga, WY · Accident · No injuries · Class 3 · Limited · Final report · Feb 8, 2021 · N7569A · Substantial damage
  > A windshield failure during cruise flight due to stress concentrations in the bond area as a result of improper assembly of the windshield.
- [NTSB ANC20LA089](https://openairdocs.org/ntsb/ANC20LA089.md): Eurocopter AS 350 · Fort Greely, AK · Accident · No injuries · Class 3 · Limited · Final report · Sep 6, 2020 · N354PA · Substantial damage
  > Failure of the door lock due to interference between the door and a cargo box.
- [NTSB CEN20LA327](https://openairdocs.org/ntsb/CEN20LA327.md): Grumman G164 · Alicia, AR · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 3, 2020 · N8105K · Substantial damage
  > Inadequate maintenance of panel fasteners, which led to a side panel coming loose during takeoff and the pilot having to make a subsequent forced landing to a flooded rice field when the airplane became difficult to control.
- [NTSB CEN20LA294](https://openairdocs.org/ntsb/CEN20LA294.md): Rockwell S2R · Harlan, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 20, 2020 · N1662S · Substantial damage
  > The fatigue fracture of the upper rudder hinge that resulted in a partial separation of the rudder from the airplane during a spray pass.

Next page: https://openairdocs.org/ntsb-events/338/cases.md?status=final&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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '338')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/338/cases?status=final

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