# 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 10 · 478 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 WPR26LA114](https://openairdocs.org/ntsb/WPR26LA114.md): American Champion 8GCBC · Carefree, AZ · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 2, 2026 · N636DB · Substantial damage
  > The pilot reported that he landed the tailwheel equipped airplane at a backcountry airstrip, and while taxiing on rough terrain, the tailwheel spring failed and the tailwheel assembly separated from the airplane. The pilot shut down the airplane and exited to…
- [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 CEN25LA392](https://openairdocs.org/ntsb/CEN25LA392.md): Diamond DA20-C1 · Terre Haute, IN · Accident · No injuries · Class 4 · Limited · Final report · Sep 19, 2025 · N544KC · Substantial damage
  > The failure of the nose landing gear strut and associated nosewheel separation during takeoff.
- [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 DCA25LA025](https://openairdocs.org/ntsb/DCA25LA025.md): Boeing 737-9 · Houston, TX · Accident · No injuries · Class 4 · Limited · Final report · Oct 24, 2024 · N27515 · Substantial damage
  > Brake application before all three landing gears were on the ground, which caused the failure of the right main landing gear tires and resulted in tire fragments impacting the fuselage.
- [NTSB CEN24LA330](https://openairdocs.org/ntsb/CEN24LA330.md): Esqual VM1 · Oshkosh, WI · Accident · No injuries · Class 4 · Limited · Final report · Aug 27, 2024 · N151GH · Substantial damage
  > The pilot’s premature rotation during takeoff which resulted in the airplane settling back to the runway and the subsequent separation of the left wheel.
- [NTSB WPR24LA260](https://openairdocs.org/ntsb/WPR24LA260.md): Kitfox Series V · La Grande, OR · Accident · No injuries · Class 3 · Limited · Final report · Jul 23, 2024 · N53562 · Substantial damage
  > Separation of the propeller blades from progressive damage at the blade roots due to overtightening of the hub bolts.
- [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 ERA24FA310](https://openairdocs.org/ntsb/ERA24FA310.md): Williams John Titan T-51 Mustang · Geneva, OH · Accident · 1 fatal · Class 3 · Field · Final report · Jul 21, 2024 · N751TX · Substantial damage
  > A sudden propeller overspeed and subsequent separation of the propeller blades and hub, while maneuvering at high speed and at low altitude, which resulted in a collision with a tree during the subsequent forced landing attempt.
- [NTSB ANC24FA063](https://openairdocs.org/ntsb/ANC24FA063.md): Robinson Helicopter R44 · Kekaha, HI · Accident · 3 fatal · Class 3 · Field · Final report · Jul 11, 2024 · N144KW · Substantial damage
  > An encounter with turbulence due to downdraft winds that resulted in mast bumping and an in-flight breakup.
- [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 CEN24FA248](https://openairdocs.org/ntsb/CEN24FA248.md): Rotorway Scorpion 133 · Andale, KS · Accident · 1 fatal · Class 3 · Field · Final report · Jul 5, 2024 · N51017 · Destroyed
  > The pilot’s abrupt control inputs, which resulted in a low-G condition, main rotor mast bumping, and subsequent severing of the tailboom by the main rotor blades.
- [NTSB ERA24FA283](https://openairdocs.org/ntsb/ERA24FA283.md): Piper PA46 · Trout Creek, NY · Accident · 5 fatal · Class 3 · Field · Final report · Jun 30, 2024 · N85PG · Destroyed
  > The pilot’s loss of airplane control in flight due to spatial disorientation during a climb to cruise altitude in instrument meteorological conditions and turbulence, which resulted in the in-flight breakup of the airplane. Contributing to the accident was…
- [NTSB CEN24LA244](https://openairdocs.org/ntsb/CEN24LA244.md): Desert Fox 1 · Ellicott, CO · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 27, 2024 · N10ZR · Substantial damage
  > The pilot's decision to takeoff with a quartering tailwind and high density altitude which resulted in a runway overrun. Contributing to the accident was the failure of the right main axle mount due to the poor weld.
- [NTSB ERA24LA276](https://openairdocs.org/ntsb/ERA24LA276.md): Snyder Searey · New Ipswich, NH · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 25, 2024 · N453TS · Substantial damage
  > A total loss of engine power due to the exhaust muffler and tailpipe assembly separating from its attach points and impacting the propeller.
- [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 CEN24FA179](https://openairdocs.org/ntsb/CEN24FA179.md): Piper PA46-500TP · Marianna, AR · Accident · 2 fatal · Class 3 · Field · Final report · May 13, 2024 · N241PM · Substantial damage
  > The pilot’s exceedance of the airplane’s design limitations, which resulted in an in-flight breakup.
- [NTSB ANC24FA029](https://openairdocs.org/ntsb/ANC24FA029.md): Douglas C54D · Fairbanks, AK · Accident · 2 fatal · Class 3 · Field · Final report · Apr 23, 2024 · N3054V · Destroyed
  > A loss of power of the No. 1 engine for reasons that could not be determined, and the incorrect installation of a B-nut fitting in the propeller feathering system, which allowed engine oil to spray onto the exhaust system when the propeller was feathered…
- [NTSB CEN24LA149](https://openairdocs.org/ntsb/CEN24LA149.md): Van's RV-12iS · Lake Elmo, MN · Accident · No injuries · Class 4 · Limited · Final report · Apr 5, 2024 · N245EM · Substantial damage
  > The student pilot’s improper landing flare, which resulted in a bounced landing, and the nose gear collapsing. Contributing to the accident was the student pilot’s lack of experience.
- [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 ERA24LA093](https://openairdocs.org/ntsb/ERA24LA093.md): Quest Kodiak 100 · Lakeport, FL · Accident · Serious injuries · Class 4 · Limited · Final report · Jan 19, 2024 · N5799 · Substantial damage
  > The improper recovery from a bounced landing, which resulted in a hard landing and subsequent noseover.
- [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 ERA24LA084](https://openairdocs.org/ntsb/ERA24LA084.md): Golden Avio S R L F30 Brio · Midland, VA · Accident · No injuries · Class 4 · Limited · Final report · Dec 31, 2023 · N37GA · Substantial damage
  > The pilot’s improper recovery from a bounced landing, which resulted in damage to, and the separation of the nose wheel and fork bracket assembly, and subsequent collapse of the nose landing gear assembly.
- [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 ERA23LA369](https://openairdocs.org/ntsb/ERA23LA369.md): Eurocopter Deutschland EC135T2 · Fargo, GA · Accident · No injuries · Class 3 · Limited · Final report · Sep 13, 2023 · N273AM · Substantial damage
  > The separation of the outer span of a tail rotor blade during flight as a result of localized intergranular corrosion due to a diminished protective coating at a critical location on the tail rotor blade surface that, combined with cyclic loading, resulted in…
- [NTSB ANC23LA071](https://openairdocs.org/ntsb/ANC23LA071.md): Bell Helicopter Textron Canada 206L-4 · King Salmon, AK · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 5, 2023 · N193AL · 2 aircraft · Substantial damage
  > The failure of both pilots to see and avoid while en route, which resulted in a midair collision.
- [NTSB CEN23LA398](https://openairdocs.org/ntsb/CEN23LA398.md): Van's RV-12 · Crystal, MN · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 4, 2023 · N321BT · Substantial damage
  > The pilot’s improper landing flare, which resulted in a bounced landing and an overstress fracture of the nose landing gear strut.
- [NTSB ERA23FA357](https://openairdocs.org/ntsb/ERA23FA357.md): Robinson Helicopter R22 Beta · Kingston, NJ · Accident · 1 fatal · Class 3 · Field · Final report · Aug 31, 2023 · N2356M · Substantial damage
  > A loss of control, which resulted in the main rotor blade severing the tail boom, for reasons that could not be determined.
- [NTSB ERA23FA352](https://openairdocs.org/ntsb/ERA23FA352.md): Eurocopter EC135 · Pompano Beach, FL · Accident · 2 fatal · Class 3 · Field · Final report · Aug 28, 2023 · N109BC · Destroyed
  > An inflight fire outside of the engine firewalls, likely from overheating of the No. 1 engine for undetermined reasons, which resulted in a partial tailboom separation.
- [NTSB ERA23LA345](https://openairdocs.org/ntsb/ERA23LA345.md): Waco UPF-7 · Warrenton, VA · Accident · No injuries · Class 4 · Limited · Final report · Aug 20, 2023 · N39721 · Substantial damage
  > A ground loop during landing resulting from a partial separation of the right main landing gear strut during takeoff.
- [NTSB ERA23FA330](https://openairdocs.org/ntsb/ERA23FA330.md): Cessna P210 · Junction City, GA · Accident · 1 fatal · Class 3 · Field · Final report · Aug 10, 2023 · N210JT · Destroyed
  > The pilot’s continued flight into a known area of adverse weather, which resulted in the penetration of a severe thunderstorm, the pilot’s loss of airplane control, and the airplane’s subsequent in-flight breakup.
- [NTSB WPR23LA283](https://openairdocs.org/ntsb/WPR23LA283.md): Beech C35 · Rock Springs, WY · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 20, 2023 · N620D · Substantial damage
  > Maintenance personnel’s failure to properly secure the propeller pitch control rod castellated nut hardware, which resulted in an in-flight failure of the pitch control bearing and subsequent loss of engine RPM and thrust.
- [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.

Next page: https://openairdocs.org/ntsb-events/338/sequence.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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '338' 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
```

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

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