# NTSB investigations, AZ: 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 WPR13FA072](https://openairdocs.org/ntsb/WPR13FA072.md): Piper PA-31-350 · Payson, AZ · Accident · 1 fatal · Field investigation · Final report · Dec 19, 2012 · N62959 · Substantial damage
  > The airplane’s inadvertent encounter, in night instrument meteorological conditions, with unforecast strong up- and downdrafts and possibly severe airframe icing conditions (which likely included supercooled large droplets that the airplane was not…
- [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.

## 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."eventStateOrRegion" = 'AZ' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '210' 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/210/sequence?state=AZ

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