# NTSB investigations: Lycoming IO-540 series

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 22 · 1,056 cases

## Latest cases

- [NTSB CEN26LA317](https://openairdocs.org/ntsb/CEN26LA317.md): Robinson Helicopter R44 II · Natchez, MS · Accident · Minor injuries · Class 4 · Limited · Investigation open · Sep 13, 2026 · N7527L · Substantial damage
- [NTSB WPR26LA306](https://openairdocs.org/ntsb/WPR26LA306.md): Aero Rampart Steen Skybolt · Roseburg, OR · Accident · No injuries · Class 4 · Limited · Investigation open · Aug 15, 2026 · N32DA · Substantial damage
- [NTSB ERA26LA296](https://openairdocs.org/ntsb/ERA26LA296.md): Piper PA32 · Dawsonville, GA · Accident · Serious injuries · Class 3 · Limited · Investigation open · Aug 9, 2026 · N3011X
- [NTSB ERA26FA271](https://openairdocs.org/ntsb/ERA26FA271.md): Smith Aerostar 601 · Lake Clear, NY · Accident · 3 fatal · Class 3 · Field · Preliminary report · Jul 14, 2026 · N800AA · Destroyed
  > On July 13, 2026, about 2236 eastern daylight time, a Smith Aerostar 601P, N800AA was destroyed when it was involved in an accident near Lake Clear, New York. The private pilot and two passengers were fatally injured. The airplane was operated as a Title 14…
- [NTSB ERA26LA244](https://openairdocs.org/ntsb/ERA26LA244.md): Cessna 182S · Naples, FL · Accident · No injuries · Class 3 · Limited · Preliminary report · Jun 20, 2026 · N7270H · Substantial damage
  > On June 20, 2026 at 1030 eastern daylight time, a Cessna 182S, N7270H, was substantially damaged when it was involved in an accident near Naples, Florida. The pilot and three passengers were uninjured. The airplane was operated as a Title 14 Code of Federal…
- [NTSB WPR26LA228](https://openairdocs.org/ntsb/WPR26LA228.md): Lancair Legacy 2000 · Los Angeles, CA · Accident · Minor injuries · Class 3 · Limited · Preliminary report · Jun 16, 2026 · N84BZ · Substantial damage
  > On June 16, 2026, about 0906 Pacific daylight time, an experimental amateur built Lancair Legacy 2000, N84BZ, was substantially damaged when it was involved in an accident near Los Angeles, California. The pilot sustained minor injuries. The airplane was…
- [NTSB WPR26LA200](https://openairdocs.org/ntsb/WPR26LA200.md): Maule M-7-260C · Kanab, UT · Accident · No injuries · Class 4 · Limited · Final report · May 21, 2026 · N261MM · Substantial damage
  > The pilot’s failure to maintain directional control during the landing roll with gusting crosswind conditions.
- [NTSB GAA26WA181](https://openairdocs.org/ntsb/GAA26WA181.md): Piper PA-23-250 · Cumayasa, La Romana, Dominican Republic · Incident · No injuries · Class 5 · Foreign · Apr 29, 2026 · N63941 · Substantial damage
- [NTSB ANC26LA029](https://openairdocs.org/ntsb/ANC26LA029.md): Maule M-7-235 · Wasilla, AK · Accident · No injuries · Class 3 · Limited · Preliminary report · Apr 3, 2026 · N93ML · Substantial damage
  > On April 3, 2026, at 1300 Alaska daylight time, a Maule M 7 235 airplane, N93ML, was substantially damaged during an accident near Wasilla, Alaska. The pilot and one passenger were not injured. The airplane was operated as a personal flight under the…
- [NTSB CEN26FA147](https://openairdocs.org/ntsb/CEN26FA147.md): Experimental Homebuilt Airshark · Statesboro, GA · Accident · 1 fatal · Class 3 · Field · Preliminary report · Mar 25, 2026 · N220AS · Substantial damage
  > On March 25, 2026, about 1453 eastern daylight time, an experimental homebuilt Airshark airplane, N220AS, was substantially damaged when it was involved in an accident near Statesboro, Georgia. The pilot was fatally injured. The airplane was operated as a…
- [NTSB CEN26LA148](https://openairdocs.org/ntsb/CEN26LA148.md): Robinson Helicopter R44 II · Stonewall, TX · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Mar 24, 2026 · N233JD · Substantial damage
  > On March 24, 2026, about 0930 central daylight time, a Robinson R44 II helicopter, N233JD, was substantially damaged when it was involved in an accident near Stonewall, Texas. The pilot and passenger were seriously injured. The helicopter was operated as a…
- [NTSB CEN26LA122](https://openairdocs.org/ntsb/CEN26LA122.md): Cessna 182 · Golden, MO · Accident · No injuries · Class 4 · Limited · Final report · Feb 21, 2026 · N7276V · Substantial damage
  > The pilot’s failure to establish stabilized approach that would have allowed the airplane to touch down with adequate runway remaining. Contributing to the accident was the pilot’s failure to execute a go-around.
- [NTSB WPR26FA097](https://openairdocs.org/ntsb/WPR26FA097.md): Socata TB21 · Prescott, AZ · Accident · 1 fatal · Class 3 · Field · Preliminary report · Feb 5, 2026 · N967WM · Destroyed
  > On February 4, 2026, about 1950 mountain standard time, a Socata TB21, N967WM, was destroyed when it was involved in an accident near Prescott, Arizona. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91…
- [NTSB CEN26LA101](https://openairdocs.org/ntsb/CEN26LA101.md): Robinson Helicopter R44 II · Sullivan, MO · Accident · Minor injuries · Class 4 · Limited · Final report · Jan 29, 2026 · N916VK · Destroyed
  > The pilot’s failure to maintain clearance from powerlines during low-level operations.
- [NTSB WPR26LA083](https://openairdocs.org/ntsb/WPR26LA083.md): Robinson R44 · Parkman, WY · Accident · No injuries · Class 4 · Limited · Final report · Jan 19, 2026 · N996NR · 2 aircraft · Substantial damage
  > The pilots’ failure to maintain separation while conducting air work in a common operational area. Contributing to the accident was the pilots’ divided attention associated with the mission activity and unreliable radio communications.
- [NTSB WPR26LA084](https://openairdocs.org/ntsb/WPR26LA084.md): Maule M-7-235B · Cody, WY · Accident · No injuries · Class 4 · Limited · Final report · Jan 17, 2026 · N116G · Substantial damage
  > The pilot's failure to maintain directional control during landing roll.
- [NTSB ERA26LA086](https://openairdocs.org/ntsb/ERA26LA086.md): Pipistrel D O O Panthera X152 · Atlanta, GA · Accident · No injuries · Class 4 · Limited · Final report · Dec 12, 2025 · N37RR · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB WPR26LA020](https://openairdocs.org/ntsb/WPR26LA020.md): Piper PA-23-250 · Condon, MT · Accident · 3 fatal · Class 3 · Limited · Preliminary report · Oct 17, 2025 · N2345R · Substantial damage
  > On October 17, 2025, about 1615 mountain daylight time, a Piper PA-23-250, N2345R, was substantially damaged when it was involved in an accident near Condon, Montana. The pilot and two passengers were fatally injured. The airplane was operated as a Title 14…
- [NTSB ERA26LA013](https://openairdocs.org/ntsb/ERA26LA013.md): Cessna T182T · Venice, FL · Accident · No injuries · Class 4 · Limited · Final report · Oct 4, 2025 · N423TA · Substantial damage
  > The pilot’s failure to maintain directional control while taxiing in gusty, quartering tailwind conditions.
- [NTSB CEN25LA398](https://openairdocs.org/ntsb/CEN25LA398.md): Piper PA-60-601P · Del Norte, CO · Accident · No injuries · Class 4 · Limited · Final report · Sep 27, 2025 · N3635A · Substantial damage
  > The loss of directional control during landing roll due to a flat tire.
- [NTSB ERA25LA363](https://openairdocs.org/ntsb/ERA25LA363.md): Piper PA-32R-300 · White Plains, NY · Accident · No injuries · Class 4 · Limited · Final report · Sep 23, 2025 · N47630 · Substantial damage
  > The pilot’s failure to maintain proper glidepath during a night visual approach, which resulted in a collision with the runway lighting system. Contributing to the outcome was the pilot’s momentary disorientation due to glare from the runway approach lighting…
- [NTSB ERA25LA358](https://openairdocs.org/ntsb/ERA25LA358.md): Cessna 182 · Blue Ridge, GA · Accident · No injuries · Class 4 · Limited · Final report · Sep 20, 2025 · N1176R · Substantial damage
  > The pilot’s failure to obtain the proper touchdown point, which resulted in a runway overrun.
- [NTSB CEN25LA387](https://openairdocs.org/ntsb/CEN25LA387.md): Piper PA-32R-301 · Oxford, MS · Accident · Serious injuries · Class 4 · Limited · Final report · Sep 18, 2025 · N318JM · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack during the initial takeoff climb, which resulted in an aerodynamic stall and impact with terrain.
- [NTSB CEN25LA372](https://openairdocs.org/ntsb/CEN25LA372.md): Cessna 182T · Seymour, IN · Accident · No injuries · Class 4 · Limited · Final report · Sep 9, 2025 · N357CP · Substantial damage
  > The flight instructor’s improper landing flare which resulted in a bounced landing and loss of control.
- [NTSB ERA25LA325](https://openairdocs.org/ntsb/ERA25LA325.md): Cessna 182 · Lebanon, OH · Accident · No injuries · Class 4 · Limited · Final report · Aug 31, 2025 · N628FN · Substantial damage
  > The pilot’s failure to maintain directional control of the airplane during takeoff, which resulted in a runway excursion and collision with a sign.
- [NTSB ANC25LA099](https://openairdocs.org/ntsb/ANC25LA099.md): Robinson Helicopter R44 II · Petersville, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 29, 2025 · N74435 · Substantial damage
  > The pilot’s exceedance of the helicopter’s available power while landing in a remote confined area, which resulted in rotor droop and a hard landing.
- [NTSB ERA25LA298](https://openairdocs.org/ntsb/ERA25LA298.md): Paschal JR Roy E Velocity XL RG · Columbia, SC · Accident · No injuries · Class 4 · Limited · Final report · Aug 12, 2025 · N7778M · Substantial damage
  > A landing gear collapse during landing.
- [NTSB ERA25LA215](https://openairdocs.org/ntsb/ERA25LA215.md): Piper PA32-300 · Branford, CT · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 1, 2025 · N2242Z · Substantial damage
  > Maintenance personnel's improper installation and inspection of the crankshaft gear bolt during major overhaul, which resulted in the crankshaft gear disengaging from the accessory gears which led to a total loss of engine power.
- [NTSB WPR25FA147](https://openairdocs.org/ntsb/WPR25FA147.md): Paul Berkovitz Vans RV-10 · Simi Valley, CA · Accident · 2 fatal · Class 3 · Field · Preliminary report · May 3, 2025 · N626PB · Destroyed
  > On May 3, 2025, about 1350 Pacific daylight time, an experimental amateur-built Van’s RV-10, N626PB, was destroyed when it was involved in an accident near Simi Valley, California. The pilot and passenger were fatally injured. The airplane was operated as a…
- [NTSB WPR25LA136](https://openairdocs.org/ntsb/WPR25LA136.md): D'Apuzzo Senior Aero Sport · Phoenix, AZ · Accident · No injuries · Class 3 · Limited · Preliminary report · Apr 19, 2025 · N321WC · Substantial damage
  > On April 19, 2025, about 1106 Pacific daylight time, an experimental amateur built D'Apuzzo Senior Aero Sport, N321WC, was substantially damaged when it was involved in an accident near Phoenix, Arizona. The pilot was not injured. The airplane was operated as…
- [NTSB WPR25LA118](https://openairdocs.org/ntsb/WPR25LA118.md): Robinson Helicopter R44 II · Hobbs, NM · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 25, 2025 · N7530U · Substantial damage
  > The student pilot’s loss of directional control during a hover, which resulted in an impact with terrain.
- [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 CEN25LA073](https://openairdocs.org/ntsb/CEN25LA073.md): Robinson Helicopter R44 II · Buras, LA · Accident · Serious injuries · Class 4 · Limited · Final report · Jan 8, 2025 · N430JM · Substantial damage
  > The pilot’s failure to maintain control during a hover taxi with a quartering tailwind.
- [NTSB ANC25LA015](https://openairdocs.org/ntsb/ANC25LA015.md): Gippsaero PTY GA8 · Nightmute, AK · Accident · No injuries · Class 4 · Limited · Final report · Jan 4, 2025 · N916RK · Substantial damage
  > The pilot’s loss of directional control while taxiing in gusting wind conditions.
- [NTSB CEN25LA059](https://openairdocs.org/ntsb/CEN25LA059.md): Cessna 182T · Pearland, TX · Accident · No injuries · Class 3 · Limited · Final report · Dec 11, 2024 · N127SL · 2 aircraft · Substantial damage
  > The AA-5 pilot’s failure to maintain separation from the 182T during approach and landing, which resulted in a ground collision during the landing roll. Contributing to the accident was the failure of the AA-5’s electrical system, which prevented the AA-5…
- [NTSB CEN25FA019](https://openairdocs.org/ntsb/CEN25FA019.md): Robinson R44 · Houston, TX · Accident · 4 fatal · Class 2 · Field · Final report · Oct 21, 2024 · N881KE · Destroyed
  > The pilot’s failure to maintain clearance from a lighted radio tower during a visual night flight. Contributing to the accident was the air traffic controller’s failure to issue a safety alert notifying the pilot of the flight’s unsafe proximity to the tower.
- [NTSB CEN25LA018](https://openairdocs.org/ntsb/CEN25LA018.md): Piper PA-32R-301 · Van, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 17, 2024 · N81481 · Substantial damage
  > The mechanic’s improper maintenance of the engine’s air induction scat duct, which collapsed during the flight and resulted in a loss of engine power.
- [NTSB CEN24LA378](https://openairdocs.org/ntsb/CEN24LA378.md): Piper PA32 · Caro, MI · Accident · No injuries · Class 3 · Limited · Final report · Sep 30, 2024 · N31407 · Substantial damage
  > A total loss of engine power due to maintenance personnel’s failure to properly tighten the fuel supply line B-nut at the fuel servo.
- [NTSB CEN24LA376](https://openairdocs.org/ntsb/CEN24LA376.md): Piper PA-32-300 · Pierz, MN · Accident · No injuries · Class 4 · Limited · Final report · Sep 30, 2024 · N2032M · Substantial damage
  > The pilot’s inadequate fuel management which resulted in the loss of engine power due to fuel starvation.
- [NTSB GAA24WA285](https://openairdocs.org/ntsb/GAA24WA285.md): Piper PA-23-250 · Nassau, Bahamas · Accident · 2 fatal · Class 4 · Foreign · Sep 12, 2024 · N555MH · Substantial damage
- [NTSB ANC24LA055](https://openairdocs.org/ntsb/ANC24LA055.md): Gippsland GA-8 · Tuntutuliak, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 26, 2024 · N13AV · Substantial damage
  > The pilot's failure to maintain directional control during takeoff after an encounter with a gusting wind, which resulted in a wing strike.
- [NTSB WPR24LA166](https://openairdocs.org/ntsb/WPR24LA166.md): Thomas J Spencer RV-10 · Snohomish, WA · Accident · No injuries · Class 4 · Limited · Final report · Jun 1, 2024 · N90VT · Substantial damage
  > The pilot’s failure to attain a proper touchdown point during landing with a tailwind which resulted in a runway overrun.
- [NTSB ERA24LA240](https://openairdocs.org/ntsb/ERA24LA240.md): Aero Commander Callair A-9B · Zebulon, NC · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 1, 2024 · N7650V · Substantial damage
  > A total loss of engine power while maneuvering due to fuel starvation.
- [NTSB WPR24LA146](https://openairdocs.org/ntsb/WPR24LA146.md): Robert Sterling 4P · Lake Havasu City, AZ · Accident · Minor injuries · Class 3 · Limited · Final report · May 9, 2024 · N78GP · Substantial damage
  > A loss of engine power during initial climb due to fuel vapor lock. Contributing to the accident was the incorrect installation of the ancillary fuel supply system components.
- [NTSB ERA24FA176](https://openairdocs.org/ntsb/ERA24FA176.md): Piper PA-32R-301 · Knoxville, TN · Accident · 1 fatal · Class 3 · Field · Final report · Apr 12, 2024 · N9236J · Destroyed
  > The pilot’s decision to depart into an area of instrument meteorological and icing conditions, which resulted in loss of airplane control and a subsequent in-flight breakup.
- [NTSB CEN24LA155](https://openairdocs.org/ntsb/CEN24LA155.md): Piper PA-32-301 · Sullivan, MO · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 11, 2024 · N651ED · Substantial damage
  > A bearing failure that resulted in fatigue failure of the crankshaft and a subsequent total loss of engine power.
- [NTSB WPR24LA111](https://openairdocs.org/ntsb/WPR24LA111.md): Piper Aerostar 601P · Grass Valley, CA · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 14, 2024 · N1SS · Substantial damage
  > The pilot’s failure to maintain directional control in a gusting wind condition.
- [NTSB ANC24LA013](https://openairdocs.org/ntsb/ANC24LA013.md): Robinson Helicopter R44 II · Glacier View, AK · Accident · No injuries · Class 3 · Limited · Final report · Feb 11, 2024 · N74868 · Substantial damage
  > A sudden stoppage of the tail rotor for unknown reasons, which resulted in the tortional overload failure of the tail rotor driveshaft.
- [NTSB CEN24LA081](https://openairdocs.org/ntsb/CEN24LA081.md): Maule M-6-235 · Beaumont, TX · Accident · No injuries · Class 4 · Limited · Final report · Dec 29, 2023 · N71MS · Substantial damage
  > The pilot’s failure to maintain directional control during landing in crosswind conditions, which resulted in a ground loop on the runway.
- [NTSB ERA24LA042](https://openairdocs.org/ntsb/ERA24LA042.md): Robinson Helicopter R44 II · Ogdensburg, NY · Accident · No injuries · Class 4 · Limited · Final report · Nov 18, 2023 · N789GR · Substantial damage
  > The loss of control of the helicopter during taxi, which resulted in rollover.

Next page: https://openairdocs.org/ntsb.md?engine=41530&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 x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41530', '41585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41530

---
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.