# NTSB investigations, 2016: 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 ANC17FA004](https://openairdocs.org/ntsb/ANC17FA004.md): Fairchild Heli-Porter Pilatus PC-6 · Port Alsworth, AK · Accident · 1 fatal · Field investigation · Final report · Oct 29, 2016 · N5308F · Substantial damage
  > The airplane's collision with mountainous terrain while operating in an area of reduced visibility and icing conditions. Contributing to the accident was the pilot's inadequate preflight planning, which would have identified deteriorating weather conditions…
- [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 CEN16LA093](https://openairdocs.org/ntsb/CEN16LA093.md): Socata TBM700 · Wichita, KS · Accident · No injuries · Limited investigation · Final report · Jan 19, 2016 · N602MA · Substantial damage
  > The pilot’s failure to maintain the minimum-recommended approach airspeed in icing conditions, which resulted in a loss of airplane control.
- [NTSB CEN16LA098](https://openairdocs.org/ntsb/CEN16LA098.md): Cessna 441 · Fargo, ND · Accident · No injuries · Limited investigation · Final report · Jan 8, 2016 · N779CC · Substantial damage
  > The pilot’s failure to cycle the surface deice boots during the instrument approach in icing conditions, which led to ice accumulation on the leading edges of the wings and empennage, and resulted in an aerodynamic stall and subsequent hard landing.

## 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 year(c."eventDate") = 2016
  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?year=2016

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