# NTSB investigations: Ice/rain protection system

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 3 · 127 cases

## Latest cases

- [NTSB ANC25LA022](https://openairdocs.org/ntsb/ANC25LA022.md): Piper PA-18-150 · Anchor Point, AK · Accident · Minor injuries · Class 4 · Limited · Final report · Feb 28, 2025 · N3798Z · Substantial damage
  > A complete loss of engine power as a result of carburetor ice due to the pilot’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice.
- [NTSB ERA25LA028](https://openairdocs.org/ntsb/ERA25LA028.md): Cessna 150 · St. Agatha, ME · Accident · No injuries · Class 3 · Limited · Final report · Oct 26, 2024 · N22197 · Substantial damage
  > A partial loss of engine power due to carburetor ice as a result of the pilot’s delayed use of carburetor heat while operating in environmental conditions conducive to serious carburetor icing.
- [NTSB ANC25LA005](https://openairdocs.org/ntsb/ANC25LA005.md): Cessna 150 · Lanai City, HI · Accident · No injuries · Class 3 · Limited · Final report · Oct 25, 2024 · N10495 · Substantial damage
  > A partial loss of engine power due to the formation of carburetor ice as a result of the pilot’s improper use of carburetor heat.
- [NTSB CEN24LA360](https://openairdocs.org/ntsb/CEN24LA360.md): Piper PA-44-180 · Shakopee, MN · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 20, 2024 · N2083D · Substantial damage
  > The pilots’ failure to apply carburetor heat during the descent, which resulted in a loss of power on both engines due to carburetor ice.
- [NTSB ERA24FA371](https://openairdocs.org/ntsb/ERA24FA371.md): Piper PA28R · Vergennes, VT · Accident · 4 fatal · Class 3 · Field · Final report · Sep 8, 2024 · N3757T · Substantial damage
  > The flight instructor’s failure to maintain control of the airplane, which resulted in the airplane exceeding its critical angle of attack and entering an aerodynamic stall. Contributing to the accident was the flight instructor's failure to properly…
- [NTSB CEN24LA301](https://openairdocs.org/ntsb/CEN24LA301.md): Tailwind W10 · West Livingston, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 3, 2024 · N129WT · Substantial damage
  > A partial loss of engine power due to carburetor ice.
- [NTSB ERA24LA201](https://openairdocs.org/ntsb/ERA24LA201.md): Stinson 108 · Beach City, OH · Accident · No injuries · Class 4 · Limited · Final report · Apr 25, 2024 · N97517 · Substantial damage
  > A total loss of engine power due to the due to the pilot’s delayed application of carburetor heat.
- [NTSB ERA24LA178](https://openairdocs.org/ntsb/ERA24LA178.md): Cessna 172 · Manassas, VA · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 15, 2024 · N8337X · Substantial damage
  > The pilot’s failure to apply carburetor heat before reducing engine power during a prolonged descent while operating in environmental conditions conducive to the development of carburetor ice, which resulted in a total loss of engine power due to carburetor…
- [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 ERA24LA164](https://openairdocs.org/ntsb/ERA24LA164.md): Piper PA-24-250 · North Kingstown, RI · Accident · No injuries · Class 3 · Limited · Final report · Mar 30, 2024 · N7538P · Substantial damage
  > A total loss of engine power during final approach due to the pilot’s failure to recognize that the environmental conditions were susceptible to carburetor icing and apply carburetor heat, which resulted in the formation of carburetor ice. Contributing to the…
- [NTSB ANC24LA014](https://openairdocs.org/ntsb/ANC24LA014.md): Benjamin Pratt Bearhawk Patrol · Galena, AK · Accident · No injuries · Class 4 · Limited · Final report · Feb 19, 2024 · N406AK · Substantial damage
  > A loss of engine power as a result of carburetor ice. Contributing to the outcome was the pilot’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice.
- [NTSB CEN24LA092](https://openairdocs.org/ntsb/CEN24LA092.md): Piper PA22 · Dalhart, TX · Accident · No injuries · Class 4 · Limited · Final report · Jan 11, 2024 · N2513P · Substantial damage
  > The total loss of engine power due to carburetor icing and the pilot’s failure to utilize carburetor heat in meteorological conditions conducive to the formation of carburetor icing.
- [NTSB CEN24LA076](https://openairdocs.org/ntsb/CEN24LA076.md): Piper PA-18A 150 · Vermillion, SD · Accident · No injuries · Class 3 · Limited · Final report · Dec 29, 2023 · N2774P · Substantial damage
  > The pilot’s encounter with carburetor icing during landing final approach which resulted in fuel starvation, a total loss of engine power, and impact with terrain.
- [NTSB ANC24LA011](https://openairdocs.org/ntsb/ANC24LA011.md): Cessna 172P · Kahului, HI · Accident · No injuries · Class 3 · Limited · Final report · Dec 23, 2023 · N53725 · Substantial damage
  > A partial loss of engine power due to the formation of carburetor ice, which resulted in the inability to maintain altitude in the traffic pattern. Contributing to the outcome was the pilot’s delayed use of carburetor heat in conditions conducive to the…
- [NTSB CEN24LA004](https://openairdocs.org/ntsb/CEN24LA004.md): Robinson Helicopter R44 · Hochatown, OK · Accident · No injuries · Class 3 · Limited · Final report · Oct 1, 2023 · N379SH · Substantial damage
  > A total loss of engine power during a practice autorotation due to the improper engine idle setting and rigging of the carburetor heat control which resulted in a hard landing.
- [NTSB ANC23LA062](https://openairdocs.org/ntsb/ANC23LA062.md): Cessna 180J · Chaka Creek, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 10, 2023 · N42610 · Substantial damage
  > A partial loss of engine power as a result of carburetor ice. Contributing to the outcome was the pilot’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice.
- [NTSB CEN23LA264](https://openairdocs.org/ntsb/CEN23LA264.md): Beech B19 · Scott City, KS · Accident · No injuries · Class 3 · Limited · Final report · Jun 24, 2023 · N9721Q · Substantial damage
  > A partial loss of engine power as a result of carburetor icing that formed while the engine was operating at a low power setting for an extended period before departure.
- [NTSB ERA23LA275](https://openairdocs.org/ntsb/ERA23LA275.md): Aeronca 11AC · Pence Springs, WV · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2023 · N9543E · Substantial damage
  > A total loss of engine power due to carburetor icing.
- [NTSB CEN23LA233](https://openairdocs.org/ntsb/CEN23LA233.md): Piper PA-25-235 · Carrington, ND · Accident · No injuries · Class 3 · Limited · Final report · Jun 3, 2023 · N8843L · Substantial damage
  > A total loss of engine power as a result of carburetor ice that formed while the engine was operating at a low power setting for an extended period of time before departure.
- [NTSB WPR23LA202](https://openairdocs.org/ntsb/WPR23LA202.md): Mooney M-18C 55 · Napa, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 26, 2023 · N201MM · Substantial damage
  > The pilot’s failure to use carburetor heat, which resulted in a loss of engine power due to carburetor icing and a subsequent impact with terrain during a forced landing.
- [NTSB ERA23LA221](https://openairdocs.org/ntsb/ERA23LA221.md): Aeronca 7DC-CONV · Fort Mill, SC · Accident · No injuries · Class 3 · Limited · Final report · May 5, 2023 · N3058E · Substantial damage
  > The pilot’s failure to apply carburetor heat before initiating a descent in conditions conducive to the development of carburetor icing, which resulted in a partial loss of engine power due to carburetor ice.
- [NTSB WPR23LA236](https://openairdocs.org/ntsb/WPR23LA236.md): Piper PA-46-310P · Springfield, KY · Accident · No injuries · Class 4 · Limited · Final report · Mar 24, 2023 · N146MS · Substantial damage
  > The pilot’s failure to activate the pitot heat in a timely manner during flight into icing conditions, which resulted in a temporary failure of the flight instruments and a subsequent 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 CEN23LA068](https://openairdocs.org/ntsb/CEN23LA068.md): Grumman American AA-5B · Reserve, LA · Accident · No injuries · Class 3 · Limited · Final report · Dec 21, 2022 · N321GD · Substantial damage
  > The partial loss of engine power due to carburetor icing and the flight instructor’s failure to use carburetor heat in weather conditions conducive to serious carburetor icing.
- [NTSB CEN23LA036](https://openairdocs.org/ntsb/CEN23LA036.md): Cessna 152 · Manchester, MI · Accident · No injuries · Class 3 · Limited · Final report · Nov 13, 2022 · N222UM · Substantial damage
  > A partial loss of engine power as a result of carburetor ice.
- [NTSB ERA23LA059](https://openairdocs.org/ntsb/ERA23LA059.md): American AA-1A · Sparta, TN · Accident · No injuries · Class 3 · Limited · Final report · Nov 4, 2022 · N7254L · Substantial damage
  > A total loss of engine power due to an accumulation of carburetor ice, resulting in an off-airport landing and substantial damage to the airplane.
- [NTSB ANC22LA064](https://openairdocs.org/ntsb/ANC22LA064.md): 5 Rivers SQ-2 · Soldotna, AK · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 27, 2022 · N58SQ · Substantial damage
  > A total loss of engine power due to carburetor icing, which resulted from the pilot's failure to use carburetor heat while operating in conditions conducive to the formation of carburetor ice.
- [NTSB ANC22LA049](https://openairdocs.org/ntsb/ANC22LA049.md): Piper PA-20 · Palmer, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 20, 2022 · N7048K · Substantial damage
  > The loss of engine power due to carburetor icing and the pilot’s failure to utilize carburetor heat.
- [NTSB ERA22FA226](https://openairdocs.org/ntsb/ERA22FA226.md): Cessna 172H · Miami, FL · Accident · 1 fatal · Class 3 · Field · Final report · May 14, 2022 · N8845Z · Substantial damage
  > A total loss of engine power due to carburetor ice as a result of the pilot’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice.
- [NTSB ERA22LA182](https://openairdocs.org/ntsb/ERA22LA182.md): American AA-1 · Kennesaw, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 7, 2022 · N623W · Substantial damage
  > A loss of engine power due to the formation of carburetor ice.
- [NTSB ERA22LA157](https://openairdocs.org/ntsb/ERA22LA157.md): Aeronca 11AC · Harveysburg, OH · Accident · No injuries · Class 3 · Limited · Final report · Mar 16, 2022 · N9588E · Substantial damage
  > A complete loss of engine power as a result of carburetor ice due to the flight instructor’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice.
- [NTSB ANC22LA008](https://openairdocs.org/ntsb/ANC22LA008.md): Piper PA-18 · Palmer, AK · Accident · No injuries · Class 4 · Limited · Final report · Nov 26, 2021 · N1380A · Substantial damage
  > The pilot’s failure to effectively use carburetor heat in conditions conducive to the formation of carburetor ice, which resulted in a partial loss of engine power, off-airport landing, and nose over.
- [NTSB CEN21LA381](https://openairdocs.org/ntsb/CEN21LA381.md): Cessna 150M · Wadsworth, OH · Accident · No injuries · Class 3 · Limited · Final report · Aug 11, 2021 · N66748 · Substantial damage
  > A partial loss of engine power due to carburetor icing and the pilot’s failure to apply carburetor heat when the power loss occurred.
- [NTSB ANC21FA065](https://openairdocs.org/ntsb/ANC21FA065.md): Cessna 172P · Eagle River, AK · Accident · 2 fatal · Class 3 · Field · Final report · Jul 26, 2021 · N65698 · Substantial damage
  > An inflight collision with terrain under unknown circumstances. Contributing to the delayed rescue response was the failure of the emergency locator transmitter (ELT) to activate as designed, and the mechanic’s failure to ensure the correct ELT was installed…
- [NTSB ERA21LA298](https://openairdocs.org/ntsb/ERA21LA298.md): Carpenter Stol CH750 · Rockwell, NC · Accident · No injuries · Class 3 · Limited · Final report · Jul 21, 2021 · N750RS · Substantial damage
  > The total loss of engine power due to carburetor ice. Also causal was the pilot’s failure to apply carburetor heat at any time during the flight.
- [NTSB WPR21LA264](https://openairdocs.org/ntsb/WPR21LA264.md): Christen Industries A-1 · Twin Falls, ID · Accident · No injuries · Class 4 · Limited · Final report · Jul 1, 2021 · N9609H · Substantial damage
  > Partial loss of engine power during a low pass, due to carburetor icing and the pilot’s failure to use carburetor heat during the landing approach.
- [NTSB WPR21LA212](https://openairdocs.org/ntsb/WPR21LA212.md): Maule M-5-235C · Stanley, ID · Accident · No injuries · Class 3 · Limited · Final report · May 29, 2021 · N9254E · Substantial damage
  > The pilot’s failure to use carburetor heat in weather conditions conducive to carburetor icing, resulting in a partial loss of engine power and a forced landing during which the airplane struck an object and nosed over.
- [NTSB ERA21FA232](https://openairdocs.org/ntsb/ERA21FA232.md): Gulfstream American AA-5A · Crossville, TN · Accident · 1 fatal · Class 3 · Field · Final report · May 25, 2021 · N26889 · Destroyed
  > A partial loss of engine power due to carburetor icing, which resulted in a descent and impact with terrain. Contributing to the accident was the pilot’s failure to apply carburetor heat following the initial loss of engine power.
- [NTSB ENG21LA023](https://openairdocs.org/ntsb/ENG21LA023.md): Bombardier CL-600-2C10 · North Canton, OH · Incident · Class 3 · Limited · Final report · Mar 26, 2021 · N709PS · Minor damage
  > Moisture ingression thru the window humpseal coming into contact with the terminal block braid wires.
- [NTSB WPR21LA141](https://openairdocs.org/ntsb/WPR21LA141.md): Mooney M20B · Animas, NM · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 24, 2021 · N74786 · Substantial damage
  > The pilot’s delayed use in the operation of carburetor heat which resulted in a loss of engine power due to carburetor icing.
- [NTSB ERA21LA125](https://openairdocs.org/ntsb/ERA21LA125.md): Taylorcraft BC-65 · Columbia, SC · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 7, 2021 · N24476 · Substantial damage
  > A total loss of engine power due to carburetor icing, which resulted from the student pilot’s failure to use carburetor heat.
- [NTSB ERA21LA080](https://openairdocs.org/ntsb/ERA21LA080.md): Socata TB10 · Pembroke Pines, FL · Accident · 1 fatal · Class 3 · Limited · Final report · Dec 17, 2020 · N5547Y · Destroyed
  > The pilot’s failure to use carburetor heat in environmental conditions favorable for serious carburetor ice during a prolonged wait with the engine at a low power setting before takeoff, which resulted in a partial loss of engine power due to carburetor ice.…
- [NTSB ERA21LA054](https://openairdocs.org/ntsb/ERA21LA054.md): Piper PA32 · Greenville, SC · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 24, 2020 · N5566J · Substantial damage
  > A partial loss of engine power due to the pilot’s delayed application of carburetor heat, which resulted in carburetor icing.
- [NTSB CEN21LA030](https://openairdocs.org/ntsb/CEN21LA030.md): Cessna 210 · Lubbock, TX · Accident · 1 fatal · Class 3 · Limited · Final report · Oct 26, 2020 · N9622T · Destroyed
  > The pilot’s improper decision to fly into icing conditions with an airplane that was not equipped for icing, which led to structural icing and a subsequent loss of airplane control, and the pilot’s impairment from carbon monoxide poisoning due to a cracked…
- [NTSB WPR21LA017](https://openairdocs.org/ntsb/WPR21LA017.md): Piper PA28 · Puyallup, WA · Accident · No injuries · Class 3 · Limited · Final report · Oct 18, 2020 · N4673R · Substantial damage
  > A partial loss of engine power as a result of carburetor icing and the flight instructors failure to use carburetor heat.
- [NTSB ERA20LA335](https://openairdocs.org/ntsb/ERA20LA335.md): Piper PA28 · Union, SC · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 27, 2020 · N33859 · Destroyed
  > A total loss of engine power due to carburetor icing. Contributing to the accident was the pilot’s failure to use carburetor heat in conditions conducive to the development of carburetor icing.
- [NTSB ANC20LA099](https://openairdocs.org/ntsb/ANC20LA099.md): Cessna 170B · Big Lake, AK · Accident · No injuries · Class 3 · Limited · Final report · Sep 23, 2020 · N4380B · Substantial damage
  > The pilot’s failure to utilize carburetor heat while flying in conditions conducive to carburetor icing, which resulted in a total loss of engine power.
- [NTSB CEN20LA407](https://openairdocs.org/ntsb/CEN20LA407.md): Quicksilver MX II · Marengo, IN · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 21, 2020 · UNREG · Substantial damage
  > A loss of engine power due to carburetor icing. Contributing to the accident was the pilot’s decision to operate the airplane in conditions conducive to carburetor icing without a carburetor heating system, contrary to the engine manufacturer’s guidance.
- [NTSB ERA20LA289](https://openairdocs.org/ntsb/ERA20LA289.md): Cessna 150 · Surry, ME · Accident · No injuries · Class 3 · Limited · Final report · Aug 17, 2020 · N45083 · Substantial damage
  > The pilot’s failure to use carburetor heat in conditions conducive to serious carburetor icing at glide power, which resulted in a loss of engine power and a forced ditching in water.
- [NTSB ENG20LA043](https://openairdocs.org/ntsb/ENG20LA043.md): Bombardier CL-600-2D24 · Charlotte, NC · Incident · No injuries · Class 3 · Limited · Final report · Jul 24, 2020 · N561NN · Minor damage
  > The windshield failed due to arcing from an inadequate solder connection at the anti-ice power terminal block.

Next page: https://openairdocs.org/ntsb-findings/010230/cases.md?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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '010230'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/010230/cases

---
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.