# NTSB investigations: Structural icing

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.

## Latest cases

- [NTSB WPR26LA126](https://openairdocs.org/ntsb/WPR26LA126.md): Cirrus Design SR20 · Redington, AZ · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 10, 2026 · N619AV · Substantial damage
  > The pilot’s improper decision to continue the flight into icing conditions, which resulted in the accumulation of airframe icing and a subsequent aerodynamic stall.
- [NTSB ERA25LA111](https://openairdocs.org/ntsb/ERA25LA111.md): Cirrus Design SR22 · New Lexington, OH · Accident · Serious injuries · Class 4 · Limited · Final report · Feb 5, 2025 · N406SR · Substantial damage
  > The pilot’s flight into previously forecasted freezing rain, which resulted in ice accretion, reduced forward visibility, and a subsequent landing undershoot.
- [NTSB WPR25LA053](https://openairdocs.org/ntsb/WPR25LA053.md): Gulfstream AM Corp Comm Div 690D · Spokane, WA · Accident · No injuries · Class 3 · Limited · Final report · Dec 2, 2024 · N29GA · Substantial damage
  > A partial loss of engine(s) power due ice ingestion.
- [NTSB CEN25LA053](https://openairdocs.org/ntsb/CEN25LA053.md): Piper PA-28R-200 · Boscobel, WI · Accident · No injuries · Class 3 · Limited · Final report · Dec 2, 2024 · N41997 · Substantial damage
  > The ice obstruction of the engine oil breather tube and alternate air outlet, which resulted in a failure of the crankcase oil seal and loss of engine oil. Contributing to the accident was the incorrect engine oil breather tube installed in the airplane by…
- [NTSB WPR25LA029](https://openairdocs.org/ntsb/WPR25LA029.md): Daher TBM700 · Pinedale, WY · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 29, 2024 · N885CA · Substantial damage
  > The pilot’s failure to ensure that the airplane was free of snow contamination before takeoff and to follow the manufacturer’s anti-icing procedure during continued snowfall, which resulted in an aerodynamic stall and loss of control shortly after liftoff.…
- [NTSB WPR24FA124](https://openairdocs.org/ntsb/WPR24FA124.md): Gulfstream 695A · San Bernardino, CA · Accident · 1 fatal · Class 3 · Field · Final report · Apr 14, 2024 · N965BC · Destroyed
  > The pilot’s continued use of the airplane’s autopilot after flight into moderate to severe icing conditions, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall.
- [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 ERA24LA094](https://openairdocs.org/ntsb/ERA24LA094.md): Cessna 208 · Dulles, VA · Incident · No injuries · Class 3 · Limited · Final report · Jan 19, 2024 · N1983X · Minor damage
  > The pilot-in-command’s approach to the critical angle of attack during initial climb, which resulted in a vibration the flight crew improperly identified as an engine issue and resulted in the subsequent off-airport landing. Contributing to the accident was…
- [NTSB CEN24FA046](https://openairdocs.org/ntsb/CEN24FA046.md): Socata TBM 700 · Ludington, MI · Accident · 2 fatal · Class 3 · Field · Final report · Nov 26, 2023 · N850JH · Destroyed
  > The pilot’s decision to take off with ice/snow contamination on the airplane’s wings, which resulted in an aerodynamic stall and impact with terrain.
- [NTSB ANC23LA065](https://openairdocs.org/ntsb/ANC23LA065.md): Beech B36TC · Cape Yakataga, AK · Accident · 2 fatal · Class 3 · Limited · Final report · Aug 27, 2023 · N6709Q · Destroyed
  > The pilot’s continued flight into moderate to severe icing conditions, including supercooled large droplets, over mountainous terrain, which resulted in a loss of control and impact with terrain. Contributing to the accident was the National Weather Service…
- [NTSB CEN23FA220](https://openairdocs.org/ntsb/CEN23FA220.md): Vans RV7 · Gibbon, NE · Accident · 1 fatal · Class 3 · Field · Final report · Jun 2, 2023 · N977RV · Destroyed
  > The pilot’s improper decision to fly the airplane into known adverse weather and icing conditions which resulted in a loss of control.
- [NTSB WPR23FA080](https://openairdocs.org/ntsb/WPR23FA080.md): Embraer Executive EMB-505 · Provo, UT · Accident · 1 fatal · Class 3 · Field · Final report · Jan 2, 2023 · N555NR · Substantial damage
  > The pilot’s failure to deice the airplane before takeoff in weather conditions conducive to ice accumulation, which resulted in an ice-contaminated wing and subsequent stall during takeoff.
- [NTSB ERA22LA191](https://openairdocs.org/ntsb/ERA22LA191.md): Piper PA-32-260 · Grantsville, MD · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 16, 2022 · N3618W · Substantial damage
  > The pilot’s decision to continue the flight into an area of moderate to heavy icing conditions, which resulted in a degradation of airplane performance and subsequent loss of control.
- [NTSB ANC22LA013](https://openairdocs.org/ntsb/ANC22LA013.md): Leach Michael Rans S7S · Winnemucca, NV · Accident · Minor injuries · Class 4 · Limited · Final report · Jan 16, 2022 · N828S · Substantial damage
  > The pilot’s failure to ensure the airplane’s wings were free of contaminates before departure.
- [NTSB WPR22FA023](https://openairdocs.org/ntsb/WPR22FA023.md): Mooney M20M · Snoqualmie, WA · Accident · 1 fatal · Class 3 · Field · Final report · Oct 28, 2021 · N40KA · Substantial damage
  > The pilot’s decision to fly the airplane into known icing conditions, which resulted in a loss of airplane control and collision with terrain.
- [NTSB CEN21FA198](https://openairdocs.org/ntsb/CEN21FA198.md): Piper PA-46-310P · Danville, AR · Accident · 4 fatal · Class 3 · Field · Final report · Apr 23, 2021 · N461DK · Substantial damage
  > The pilot’s improper decision to continue flight in an area of moderate-to-heavy icing conditions, which resulted in exceedance of the airplane’s anti-icing system capabilities, a degradation of aircraft performance, and subsequent aerodynamic stall.
- [NTSB ERA21LA122](https://openairdocs.org/ntsb/ERA21LA122.md): Piper PA46 · Leicester, MA · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 2, 2021 · N221ST · Substantial damage
  > The pilot’s failure to maintain the minimum airspeed for flight in icing conditions, which resulted in a loss of elevator control during approach due to ice accumulation.
- [NTSB WPR19FA154](https://openairdocs.org/ntsb/WPR19FA154.md): Cirrus SR22 · Grover, UT · Accident · 2 fatal · Class 2 · Field · Final report · May 24, 2019 · N809SR · Destroyed
  > The pilot's encounter with moderate to severe icing conditions during cruise flight, which resulted in structural icing and a subsequent loss of control. Contributing to the accident was the pilot’s decision to continue a flight route through known moderate…
- [NTSB CEN19FA029](https://openairdocs.org/ntsb/CEN19FA029.md): Beech 55 · Liberal, KS · Accident · 2 fatal · Field investigation · Final report · Nov 17, 2018 · N4817M · Substantial damage
  > The pilot's improper decision to fly in an area where moderate icing conditions were forecasted in an airplane that was not certified for such conditions, and in the effort to get out of the icing conditions, his decision to fly below the minimum descent…
- [NTSB CEN18LA146](https://openairdocs.org/ntsb/CEN18LA146.md): Cessna T303 · Pine Ridge, SD · Accident · Minor injuries · Limited investigation · Final report · Apr 24, 2018 · N9746C · Substantial damage
  > The airplane’s inadvertent encounter with severe icing conditions during descent, which resulted in structural icing, the pilot’s inability to maintain altitude, and an emergency landing. Contributing to the accident was an incomplete preflight weather…
- [NTSB CEN18LA077](https://openairdocs.org/ntsb/CEN18LA077.md): Bryk Steven L Velocity XL RG · Santa Fe, NM · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 16, 2018 · N787SB · Substantial damage
  > The airplane’s inadvertent encounter with unforecasted icing conditions during cruise flight, which resulted in the accumulation of airframe icing, the airplane’s inability to maintain altitude, and a subsequent forced landing on rough terrain.
- [NTSB CEN17LA076](https://openairdocs.org/ntsb/CEN17LA076.md): Cessna 182T · Green Bay, WI · Accident · No injuries · Limited investigation · Final report · Jan 11, 2017 · C-GTBI · Substantial damage
  > The airplane’s encounter with unforecast icing conditions, which led to structural icing that obscured the pilot’s vision, an aerodynamic stall, and a subsequent hard landing.
- [NTSB GAA16CA107](https://openairdocs.org/ntsb/GAA16CA107.md): Piper PA 46 · Ottawa, KS · Accident · Minor injuries · Data collection · Final report · Jan 19, 2016 · N113WB · Substantial damage
  > The flight crews encounter with un-forecasted freezing rain resulting in an uncontrolled descent, forced landing, and substantial damage to the airplane's firewall, and forward pressure bulkhead.
- [NTSB CEN15FA119](https://openairdocs.org/ntsb/CEN15FA119.md): Cessna 182L · Owen, WI · Accident · 1 fatal · Field investigation · Final report · Jan 26, 2015 · N3181R · Substantial damage
  > The flight instructor's decision to initiate flight into forecasted icing conditions in an airplane that was not certified or equipped for flight into icing conditions, which resulted in significant structural ice accumulation to the extent that the airplane…
- [NTSB CEN14IA139](https://openairdocs.org/ntsb/CEN14IA139.md): Cirrus Design SR22 · Gunnison, CO · Incident · No injuries · Incident investigation · Final report · Feb 14, 2014 · N18DN · Minor damage
  > The pilot's improper decision to initiate the flight into an area with forecast icing conditions, which resulted in an encounter with in-flight icing conditions that prevented the airplane from being able to maintain altitude.
- [NTSB ANC14CA010](https://openairdocs.org/ntsb/ANC14CA010.md): Bellanca 7GCBC · Soldotna, AK · Accident · Minor injuries · Data collection · Final report · Dec 4, 2013 · N88342 · Substantial damage
  > The operation of the airplane by the uncertificated student pilot, his failure to recognize conditions conducive to structural icing, and subsequent decision to depart in conditions conducive to structural icing, resulting in a severe icing encounter and…
- [NTSB CEN14LA074](https://openairdocs.org/ntsb/CEN14LA074.md): Piper PA 28-181 · Rock Lake, ND · Accident · Serious injuries · Limited investigation · Final report · Dec 1, 2013 · N6780F · Substantial damage
  > The noninstrument-rated pilot’s failure to obtain weather briefings immediately before and during the flight and his continued flight into icing conditions, which resulted in the airplane’s loss of performance and the subsequent controlled descent into trees…
- [NTSB CEN14FA032](https://openairdocs.org/ntsb/CEN14FA032.md): Glasair Aviation USA Sportsman GS-2 · Castle Rock, CO · Accident · Serious injuries · Field investigation · Final report · Oct 29, 2013 · N535SP · Substantial damage
  > The pilot’s improper decision to continue flight into known icing conditions, which adversely affected the airplane’s performance and resulted in a loss of airplane control.
- [NTSB ANC13CA107](https://openairdocs.org/ntsb/ANC13CA107.md): Piper PA 18-150 · Wasilla, AK · Accident · No injuries · Data collection · Final report · Sep 30, 2013 · N40579 · Substantial damage
  > The pilot's improper preflight inspection, and failure to remove heavy frost from the airplane prior to attempting a takeoff.
- [NTSB DCA13WA050](https://openairdocs.org/ntsb/DCA13WA050.md): Bombardier CL600 2B19 · Almaty, Kazakhstan · Accident · 21 fatal · Foreign investigation · Jan 29, 2013 · UP-CJ006 · Destroyed
  > The Accident Investigation Department of the Ministry of Transport and Communications of the Republic of Kazakhstan has notified the NTSB of an accident involving a Bombardier Challenger CRJ-200, registration UP-CJ006, which occurred on January 29, 2013. The…
- [NTSB WPR13FA041](https://openairdocs.org/ntsb/WPR13FA041.md): American AA-1 · Morgan, UT · Accident · 1 fatal · Field investigation · Final report · Nov 15, 2012 · N5642L · Substantial damage
  > The pilot's inadequate preflight inspection, which resulted in frost remaining on the airplane's surfaces and led to its inability to produce enough lift to clear rising terrain.
- [NTSB CEN13CA005](https://openairdocs.org/ntsb/CEN13CA005.md): Piper PA-24-250 · Colorado Springs, CO · Accident · No injuries · Data collection · Final report · Oct 5, 2012 · N6661P · Substantial damage
  > The pilot’s failure to maintain airspeed during the landing with known structural icing, which resulted in the airplane’s stall. Contributing to the accident was the pilot’s failure to divert to an area where conditions were not conducive to icing.
- [NTSB ANC12CA115](https://openairdocs.org/ntsb/ANC12CA115.md): Cessna 182A · Port Lions, AK · Accident · No injuries · Data collection · Final report · Oct 1, 2012 · N2028G · Substantial damage
  > The pilot's decision to take off with ice- and snow-contaminated wings.
- [NTSB WPR11FA228](https://openairdocs.org/ntsb/WPR11FA228.md): Bellanca 17-30A · Rock Springs, WY · Accident · 2 fatal · Field investigation · Final report · May 18, 2011 · N93577 · Substantial damage
  > The pilot’s decision to continue flight into an area of known adverse weather, which resulted in an accumulation of structural ice that led to a loss of control and in-flight breakup. Also causal was the pilot’s inadequate preflight weather planning.
- [NTSB ERA11FA182](https://openairdocs.org/ntsb/ERA11FA182.md): Diamond DA-40 · Allagash, ME · Accident · 1 fatal · Field investigation · Final report · Mar 7, 2011 · CGPDO · Substantial damage
  > The pilot's inadvertent encounter with icing conditions, which resulted in an aerodynamic stall and loss of control. Contributing was the pilots’ inadequate preflight weather planning.
- [NTSB CEN10WA331](https://openairdocs.org/ntsb/CEN10WA331.md): Cirrus Design SR20 · Sirdal, Norway · Accident · No injuries · Foreign investigation · May 28, 2010 · LN-BCD · Substantial damage
  > On May 28, 2010, at 1708 coordinated universal time (UTC), a Cirrus Design Corporation model SR20 airplane, s/n 1888, Norwegian registration LN-BCD, was substantially damaged when it impacted mountainous terrain near Sirdal, Norway. The flight had encountered…
- [NTSB ANC10LA019](https://openairdocs.org/ntsb/ANC10LA019.md): Cessna 208B · Kwigillingok, AK · Accident · No injuries · Limited investigation · Final report · Feb 17, 2010 · N207DR · Substantial damage
  > The pilot's decision to take off with ice-contaminated wings in freezing rain and mist, which resulted in an aerodynamic stall.
- [NTSB WPR09LA263](https://openairdocs.org/ntsb/WPR09LA263.md): Lanham Lancair IV · Seligman, AZ · Accident · 2 fatal · Limited investigation · Final report · May 23, 2009 · N144L · Substantial damage
  > The pilot's loss of airplane control during en route descent while operating in known icing conditions.
- [NTSB CEN09CA136](https://openairdocs.org/ntsb/CEN09CA136.md): Beech 19 · Lafayette, IN · Accident · No injuries · Data collection · Final report · Jan 18, 2009 · N6509T · Substantial damage
  > The pilot's inadvertent encounter with icing conditions during initial climb. Contributing to the accident were the lack of visibility during the landing due to an ice covered windscreen, and the structural ice that adversely affected the flight…
- [NTSB CEN09LA122](https://openairdocs.org/ntsb/CEN09LA122.md): Beech A36TC · Three Rivers, MI · Accident · No injuries · Limited investigation · Final report · Jan 6, 2009 · N92WT · Substantial damage
  > The pilot's decision to continue the flight into an area with conditions that were conducive to icing and the loss of engine power due to induction icing.
- [NTSB WPR09CA051](https://openairdocs.org/ntsb/WPR09CA051.md): Beech B60 · Rock River, WY · Accident · No injuries · Data collection · Final report · Nov 29, 2008 · N6693A · Substantial damage
  > The pilot's failure to maintain clearance from a power line due to the lack of forward visibility because of an ice-covered windshield. Contributing to the accident was the flight's encounter with icing weather conditions.
- [NTSB NYC08LA176](https://openairdocs.org/ntsb/NYC08LA176.md): Desalvatore Al Lancair IV-P · Snow Hill, NC · Accident · 2 fatal · Limited investigation · Final report · May 8, 2008 · N101BX · Destroyed
  > An inadvertent encounter with icing conditions, resulting in a loss of aircraft control. Contributing to the accident was the pilot's inadequate preflight and in-flight decision making.
- [NTSB DFW08FA131](https://openairdocs.org/ntsb/DFW08FA131.md): Cessna 182 · Black Hawk, CO · Accident · 1 fatal · Field investigation · Final report · May 8, 2008 · N8553S · Substantial damage
  > The loss of engine power due to induction icing. A contributing factor was the pilot's decision to continue flight in conditions favorable for structural and induction-system icing.
- [NTSB NYC08FA139](https://openairdocs.org/ntsb/NYC08FA139.md): Mooney M20C · Atkins, VA · Accident · 2 fatal · Field investigation · Final report · Mar 16, 2008 · C-FRSK · Destroyed
  > The pilot's improper decision to take off in conditions conducive to icing, and his inability to maintain control of the airplane during an in-flight accumulation of structural ice.
- [NTSB CHI08FAMS2](https://openairdocs.org/ntsb/CHI08FAMS2.md): Piper PA-28-161 · Vik, Iceland · Accident · 1 fatal · Missing aircraft · Final report · Feb 21, 2008 · N60842 · Substantial damage
  > The pilot's decision to fly into an area of forecast weather suitable for structural icing. Contributing to the accident was the effect of the structural icing encountered.

## 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 e.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e WHERE e."isDefiningEvent" AND e."tier2Number" = '210')
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/210/cases

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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.