# NTSB investigations: Lycoming GO-480 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 4 · 198 cases

## Latest cases

- [NTSB ANC25LA095](https://openairdocs.org/ntsb/ANC25LA095.md): Helio H-395 · Pilot Point, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 21, 2025 · N44344 · Substantial damage
  > The pilot's inadequate takeoff performance planning, which resulted in a runway excursion and collision with terrain.
- [NTSB ERA25LA091](https://openairdocs.org/ntsb/ERA25LA091.md): Helio HT-295 · Marion, OH · Accident · No injuries · Class 3 · Limited · Final report · Jan 5, 2025 · N18JC · Substantial damage
  > The failure of the right main landing gear spring due to intergranular stress-corrosion cracking that progressed into fatigue. Contributing to the accident was the improper rework of the spring at an undetermined time.
- [NTSB ANC23LA082](https://openairdocs.org/ntsb/ANC23LA082.md): Helio H-295 · Fairbanks, AK · Accident · No injuries · Class 4 · Limited · Final report · Sep 17, 2023 · N713C · Substantial damage
  > The pilot’s encounter with windshear during initial climb out, which resulted in a loss of control.
- [NTSB ANC20CA092](https://openairdocs.org/ntsb/ANC20CA092.md): Helio H 295 · Fairbanks, AK · Accident · No injuries · Class 4 · Data collection · Final report · Sep 10, 2020 · N68857 · Substantial damage
  > The pilot’s decision to initiate a right turn immediately after departure and his failure to maintain a proper crosswind correction, which resulted in a collision with terrain.
- [NTSB CEN19LA251](https://openairdocs.org/ntsb/CEN19LA251.md): Ryan Navion · Chicago, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 27, 2019 · N27AW · Substantial damage
  > The failure of the left main landing gear upper side brace assembly during landing due to reverse bending fatigue as a result of the incomplete penetration of the circumferential weld during initial production of the component.
- [NTSB WPR19FA096](https://openairdocs.org/ntsb/WPR19FA096.md): Beech 50 · Riverside, CA · Accident · 1 fatal · Class 3 · Field · Final report · Mar 16, 2019 · N800DC · Substantial damage
  > The pilot’s failure to maintain airspeed and control of the airplane following a loss of right engine power for reasons that could not be determined based on the available information.
- [NTSB ERA18LA201](https://openairdocs.org/ntsb/ERA18LA201.md): Aero Commander 560 · Crestview, FL · Accident · No injuries · Class 3 · Limited · Final report · Jul 26, 2018 · N2705B · Substantial damage
  > A collapse of the right main landing gear for reasons that could not be determined based on the available information.
- [NTSB WPR18FA198](https://openairdocs.org/ntsb/WPR18FA198.md): Ryan Navion · Truckee, CA · Accident · 2 fatal · Field investigation · Final report · Jul 17, 2018 · N5329K · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB GAA18CA225](https://openairdocs.org/ntsb/GAA18CA225.md): Republic RC 3 · Pelion, SC · Accident · No injuries · Data collection · Final report · Apr 21, 2018 · N9042N · Substantial damage
  > The pilot’s failure to maintain directional control during landing in gusting crosswind conditions.
- [NTSB ANC16LA071](https://openairdocs.org/ntsb/ANC16LA071.md): Helio H-295 · Delta Junction, AK · Accident · No injuries · Limited investigation · Final report · Sep 26, 2016 · N68857 · Substantial damage
  > The pilot’s decision to take off from a wet, snowy airstrip and his delayed decision to abort the takeoff, which resulted in a runway excursion.
- [NTSB GAA16CA509](https://openairdocs.org/ntsb/GAA16CA509.md): Grumman G44 · Lakeport, CA · Accident · Minor injuries · Data collection · Final report · Sep 17, 2016 · N111W · Substantial damage
  > The pilot's failure to retract the landing gear, which resulted in a gear-down water landing and a nose over.
- [NTSB ANC16LA067](https://openairdocs.org/ntsb/ANC16LA067.md): Helio H 295 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Sep 16, 2016 · N6464V · Substantial damage
  > Excessive side loads imposed on the tailwheel A-frame during the takeoff roll, which resulted in a separation of the tailwheel and the subsequent loss of directional control.
- [NTSB GAA16CA366](https://openairdocs.org/ntsb/GAA16CA366.md): Helio H 295 · Grants Pass, OR · Accident · No injuries · Data collection · Final report · Jul 10, 2016 · N9185Z · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll in gusty crosswind conditions, which resulted in a runway excursion and a ground loop.
- [NTSB GAA15CA268](https://openairdocs.org/ntsb/GAA15CA268.md): Helio H 395 · Bethel, AK · Accident · No injuries · Data collection · Final report · Sep 18, 2015 · N910SP · Substantial damage
  > The pilot's failure to maintain a positive climb rate during takeoff initial climb, resulting in an uncontrolled descent and collision with trees and terrain.
- [NTSB ANC15LA070](https://openairdocs.org/ntsb/ANC15LA070.md): Helio H 295 · Delta Junction, AK · Accident · No injuries · Limited investigation · Final report · Sep 13, 2015 · N6464V · Substantial damage
  > A partial loss of engine power during takeoff for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB GAA15CA055](https://openairdocs.org/ntsb/GAA15CA055.md): Beech C 50 · Honesdale, PA · Accident · No injuries · Data collection · Final report · Apr 18, 2015 · N38MM · Substantial damage
  > The pilot's failure to stop the airplane on the runway during landing, resulting in an overrun, landing gear collapse and substantial damage to the airplane.
- [NTSB ANC15LA004](https://openairdocs.org/ntsb/ANC15LA004.md): Helio H 295 · Nenana, AK · Accident · No injuries · Limited investigation · Final report · Nov 15, 2014 · N6465V · Substantial damage
  > The partial loss of engine power for reasons that could not be determined because postaccident examination of the engine revealed no evidence of any preimpact mechanical anomalies.
- [NTSB ANC14CA082](https://openairdocs.org/ntsb/ANC14CA082.md): Helio H 295 · Prospect Creek, AK · Accident · Minor injuries · Data collection · Final report · Sep 16, 2014 · N50718 · Substantial damage
  > The pilot's loss of directional control during takeoff, in gusty and variable wind conditions, resulting in a collision with terrain.
- [NTSB WPR13CA395](https://openairdocs.org/ntsb/WPR13CA395.md): Beech C-50 · Homedale, ID · Accident · No injuries · Data collection · Final report · Sep 1, 2013 · N212G · Substantial damage
  > The pilot's delayed action to arrest a loss of altitude on short final, which resulted in a loss of aircraft control and collision with a fence post.
- [NTSB ERA13FA225](https://openairdocs.org/ntsb/ERA13FA225.md): Grumman G-44 · Catskill, NY · Accident · 1 fatal · Field investigation · Final report · May 2, 2013 · N8AS · Destroyed
  > The pilot’s misjudgment of the airplane’s altitude above the water and early flare for a landing on water with a glassy condition, which led to the airplane exceeding its critical angle-of-attack and experiencing an aerodynamic stall.
- [NTSB ANC12CA020](https://openairdocs.org/ntsb/ANC12CA020.md): Helio H-295 · Old Minto, AK · Accident · No injuries · Data collection · Final report · Jan 26, 2012 · N713C · Substantial damage
  > The pilot's decision to land on unsuitable terrain, which resulted in the airplane nosing over.
- [NTSB ERA11CA364](https://openairdocs.org/ntsb/ERA11CA364.md): Helio H-295 · Brasstown, NC · Accident · Minor injuries · Data collection · Final report · Jun 25, 2011 · N99PM · Substantial damage
  > The pilot's inadequate preflight planning, which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB WPR10LA069](https://openairdocs.org/ntsb/WPR10LA069.md): Mahre Starduster SA300 · Zillah, WA · Accident · Serious injuries · Limited investigation · Final report · Nov 29, 2009 · N480DM · Substantial damage
  > The pilot’s failure to maintain aircraft control during a low-altitude maneuver.
- [NTSB ANC09CA091](https://openairdocs.org/ntsb/ANC09CA091.md): Helio H-295 · Koliganek, AK · Accident · No injuries · Data collection · Final report · Sep 2, 2009 · N6468V · Substantial damage
  > A loss of engine power during cruise flight due to water in the fuel, and the pilot's inadequate preflight inspection.
- [NTSB ANC09LA023](https://openairdocs.org/ntsb/ANC09LA023.md): Helio H-295 · Healy, AK · Accident · No injuries · Limited investigation · Final report · Mar 14, 2009 · N6478V · Substantial damage
  > The pilot's delay in initiating a climb while he was packing snow with the airplane's skis in preparation for landing, resulting in a collision with brush.
- [NTSB ERA09CA165](https://openairdocs.org/ntsb/ERA09CA165.md): Helio H-295 · Clemson, SC · Accident · No injuries · Data collection · Final report · Feb 9, 2009 · N99PM · Substantial damage
  > The pilot's failure to maintain directional control during landing. Contributing to the accident was the crosswind.
- [NTSB DFW08LA139](https://openairdocs.org/ntsb/DFW08LA139.md): Commander AC-680 · Hope, AR · Accident · No injuries · Limited investigation · Final report · May 8, 2008 · N39BA · Substantial damage
  > The pilot's failure to maintain control of the twin-engine airplane while landing. Contributing to the accident were the crosswind and partial loss of power on the right engine.
- [NTSB ATL07CA068](https://openairdocs.org/ntsb/ATL07CA068.md): Beech D50E · Decatur, AL · Accident · No injuries · Data collection · Final report · Apr 6, 2007 · N107WB · Substantial damage
  > The pilot's improper fuel management resulting in failure of both engines due to fuel starvation.
- [NTSB LAX07LA031](https://openairdocs.org/ntsb/LAX07LA031.md): Ryan Navion B · Riverside, CA · Accident · No injuries · Limited investigation · Final report · Nov 12, 2006 · N5348K · Substantial damage
  > A leak in the fuel selector valve and gascolator that resulted in fuel starvation on takeoff due to air leakage into the fuel system. A contributing factor in the accident was the inadequate annual inspection performed by other maintenance personnel.
- [NTSB SEA07LA009](https://openairdocs.org/ntsb/SEA07LA009.md): Helio H-295 · Lake Isabel, WA · Accident · Serious injuries · Limited investigation · Final report · Oct 21, 2006 · N6471V · Substantial damage
  > The pilot's failure to maintain airspeed while maneuvering for a precautionary landing following a partial loss of engine power, which resulted in an inadvertent stall/mush and subsequent hard landing. A contributing factor was the partial loss of engine…
- [NTSB LAX05CA129](https://openairdocs.org/ntsb/LAX05CA129.md): Beech D50C · Montague, CA · Accident · Minor injuries · Data collection · Final report · Apr 2, 2005 · N50G · Substantial damage
  > The pilot's inadequate aircraft preflight and failure to verify that an adequate fuel supply was in the right main tank prior to flight, resulting in a fuel starvation induced loss of engine power in the right engine. Also causal was the pilot's failure to…
- [NTSB ANC05LA045](https://openairdocs.org/ntsb/ANC05LA045.md): Helio H-295 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Feb 28, 2005 · N6465V · Substantial damage
  > The pilot's delay in performing a go-around, and his failure to maintain obstacle clearance.
- [NTSB FTW04WA203](https://openairdocs.org/ntsb/FTW04WA203.md): Helio H-295 · La Campa, Honduras · Accident · 1 fatal · Foreign investigation · Jul 31, 2004 · N6347V · Destroyed
- [NTSB IAD04LA016](https://openairdocs.org/ntsb/IAD04LA016.md): Pilatus P3-05 · Edgewater, FL · Accident · 2 fatal · Limited investigation · Final report · Apr 10, 2004 · N860MK · Destroyed
  > The delamination of the no. 2 connecting rod bearing for undetermined reasons, resulting in a total loss of engine power. A factor in the accident was the pilot's inability to complete a successful forced landing due to oil on the windscreen, and smoke and…
- [NTSB ANC02LA101](https://openairdocs.org/ntsb/ANC02LA101.md): Helio H-295 · Igiugig, AK · Accident · No injuries · Limited investigation · Final report · Aug 15, 2002 · N920AS · Substantial damage
  > The pilot's inadequate evaluation of the wind/weather conditions resulting in a collision with an embankment during the takeoff run. A factor contributing to the accident was a sudden wind shift to a tailwind.
- [NTSB ANC02LA089](https://openairdocs.org/ntsb/ANC02LA089.md): Helio H-295 · Fort Yukon, AK · Accident · No injuries · Limited investigation · Final report · Aug 2, 2002 · N50718 · Substantial damage
  > The failure of the axle shaft, which resulted in the separation of the right main tire/wheel from the airplane on landing.
- [NTSB FTW02LA049](https://openairdocs.org/ntsb/FTW02LA049.md): Beech BE-50 · Altus, OK · Accident · No injuries · Limited investigation · Final report · Nov 16, 2001 · N432L · Substantial damage
  > The pilot's improper flare and his failure to maintain directional control. A contributing factor was the ditch.
- [NTSB SEA01LA067](https://openairdocs.org/ntsb/SEA01LA067.md): Republic RC-3 · Carr Inlet, WA · Accident · No injuries · Limited investigation · Final report · Mar 23, 2001 · N6295K · Substantial damage
  > Fatigue fracture of the propeller attaching bolts resulting in the total separation of the propeller assembly from the crankshaft flange.
- [NTSB MIA00LA079](https://openairdocs.org/ntsb/MIA00LA079.md): Beech D50E · Myrtle Beach, SC · Accident · No injuries · Limited investigation · Final report · Jan 31, 2000 · N14VU · Substantial damage
  > The on-ground fire caused by fuel flowing out the fuel vent and near the exhaust of the left engine resulting in the on-ground fire and substantial damage to the airplane. A finding in the investigation was that all four fuel tanks had been filled before the…
- [NTSB ANC99LA095](https://openairdocs.org/ntsb/ANC99LA095.md): Helio H-395 · Igiugig, AK · Accident · No injuries · Limited investigation · Final report · Jul 20, 1999 · N4198D · Substantial damage
  > The pilot's inadequate compensation for wind conditions during the downwind to upwind taxi turn. Factors associated with this accident were the high crosswind, the pilot's improper use of flaps, and his self-induced pressure because he was behind schedule.
- [NTSB NYC99FA126](https://openairdocs.org/ntsb/NYC99FA126.md): Beech D50C · Montgomery, NY · Accident · 2 fatal · Field investigation · Final report · May 30, 1999 · N401JD · Substantial damage
  > The pilot-in-command's failure to maintain adequate airspeed while maneuvering in the traffic pattern, which resulted in an inadvertent stall/spin.
- [NTSB IAD98LA056](https://openairdocs.org/ntsb/IAD98LA056.md): Grumman G-44 · Cleveland, OH · Accident · No injuries · Limited investigation · Final report · May 12, 1998 · N1AS · Substantial damage
  > Failure of the pilot to extend the landing gear. A related factor was the diverted attention.
- [NTSB ANC97LA128](https://openairdocs.org/ntsb/ANC97LA128.md): Helio H-295 · Fort Yukon, AK · Accident · No injuries · Limited investigation · Final report · Aug 23, 1997 · N6465V · Substantial damage
  > failure of the pilot to maintain directional control of the airplane, which resulted in a swerve and collision with a tree as the pilot continued the takeoff, subsequently jamming the stabilator and causing the plane to crash in water.
- [NTSB ANC97LA094](https://openairdocs.org/ntsb/ANC97LA094.md): Helio H295 · Ekwok, AK · Accident · No injuries · Limited investigation · Final report · Jun 29, 1997 · N6343V · Substantial damage
  > The pilot's selection of an unsuitable area for takeoff.
- [NTSB SEA96FA201](https://openairdocs.org/ntsb/SEA96FA201.md): Beech D50 · Seattle, WA · Accident · 1 fatal · Field investigation · Final report · Aug 24, 1996 · N567SF · Substantial damage
  > failure of the pilot to follow proper emergency procedures (properly configure the airplane and feather the appropriate propeller) after loosing power in one engine, which resulted in his inability to maintain altitude until reaching an airport. Factors…
- [NTSB LAX96LA174](https://openairdocs.org/ntsb/LAX96LA174.md): Helio H-295 · Grand Canyon, AZ · Accident · No injuries · Limited investigation · Final report · Apr 19, 1996 · N6470V · Substantial damage
  > the partial failure of the landing gear brake system resulting from loss of the clips retaining the right-hand brake disk. The resulting loss of braking authority impaired the pilot's ability to maintain directional control in a left quartering tailwind and…
- [NTSB ANC96IA039](https://openairdocs.org/ntsb/ANC96IA039.md): Helio H295 · Angoon, AK · Incident · No injuries · Incident investigation · Final report · Mar 29, 1996 · N5462E · Minor damage
  > the pilot's inadequate compensation for the gusty wind conditions. A factor associated with the accident was the gusty wind conditions.
- [NTSB MIA96LA090](https://openairdocs.org/ntsb/MIA96LA090.md): Helio H-295 · Key West, FL · Accident · No injuries · Limited investigation · Final report · Mar 3, 1996 · N68883 · Substantial damage
  > The pilot's inadequate compensation for wind conditions during lift-off, which resulted in the right wingtip contacting the runway. The gusty crosswind was a related factor.
- [NTSB LAX96LA047](https://openairdocs.org/ntsb/LAX96LA047.md): Beech D-50 · Jackson, CA · Accident · No injuries · Limited investigation · Final report · Nov 17, 1995 · N100AV · Destroyed
  > the failure of the pilot-in-command to follow the pre-landing checklist which resulted in his failure to extend the landing gear and an inadvertent wheels-up landing.
- [NTSB CHI95LA338](https://openairdocs.org/ntsb/CHI95LA338.md): Helio U-10D · Wellsville, KS · Accident · No injuries · Limited investigation · Final report · Sep 30, 1995 · N2706J · Substantial damage
  > The pilot's improper weather evaluation. A factor was the pilot's inadequate compensation for the wind conditions.

Next page: https://openairdocs.org/ntsb.md?engine=41527&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 ('41527'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41527

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