# NTSB investigations, AL: Flight control sys malf/fail

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 ERA16LA015](https://openairdocs.org/ntsb/ERA16LA015.md): Bell 206L 3 · Dickinson, AL · Accident · No injuries · Limited investigation · Final report · Oct 15, 2015 · N206CJ · Substantial damage
  > The improper installation by company maintenance personnel of the securing hardware of a tail rotor driveshaft section, which resulted in that section of tail rotor driveshaft disconnecting and a complete loss of tail rotor thrust.
- [NTSB ERA13LA052](https://openairdocs.org/ntsb/ERA13LA052.md): Waller Charles R Rans S12-XL · Gordon, AL · Accident · No injuries · Limited investigation · Final report · Nov 10, 2012 · N933CW · Substantial damage
  > A fatigue failure of the elevator pitch trim cable, which resulted in aerodynamic flutter of the elevator in flight and the airplane’s subsequent nose-over during the resultant precautionary landing.
- [NTSB ERA12LA505](https://openairdocs.org/ntsb/ERA12LA505.md): Piper PA-22-160 · Bay Minette, AL · Accident · No injuries · Limited investigation · Final report · Aug 13, 2012 · N9216D · Substantial damage
  > The separation of the tailwheel linkage for reasons that could not be determined because the linkage was not located, which resulted in a loss of directional control during landing.
- [NTSB ERA12LA150](https://openairdocs.org/ntsb/ERA12LA150.md): M-Squared Breese 2 · Bayou La Batre, AL · Accident · No injuries · Limited investigation · Final report · Jan 19, 2012 · N582MS · Substantial damage
  > The pilot's inability to maintain control of the airplane for reasons that could not be determined because postaccident examination of the rudder control system did not reveal any anomalies that would have precluded control of the airplane.
- [NTSB CEN11IA111](https://openairdocs.org/ntsb/CEN11IA111.md): Cessna 560XL · Birmingham, AL · Incident · No injuries · Incident investigation · Final report · Dec 13, 2010 · N498AB · No damage
  > The manufacturer's inadequate initial design and inadequate subsequent modifications of the tailcone, which allowed moisture to collect and freeze around rudder cables during operations in subfreezing temperatures, resulting in a loss of rudder authority…

## 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" = 'AL' 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" = '333' 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/333/sequence?state=AL

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