# NTSB investigations: Ailerons

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 WPR25LA209](https://openairdocs.org/ntsb/WPR25LA209.md): Pipistrel Alpha Trainer · Colorado City, AZ · Accident · No injuries · Class 4 · Limited · Final report · Jul 11, 2025 · N209ZM · Substantial damage
  > The pilot’s exceedance of the airplane’s never-exceed speed (VNE) during maneuvering, which resulted in the in-flight separation of the left flaperon.
- [NTSB DCA24LA293](https://openairdocs.org/ntsb/DCA24LA293.md): Boeing 747-4HQF · Istanbul, Türkiye · Accident · No injuries · Class 4 · Limited · Final report · Aug 17, 2024 · N782CK · Substantial damage
  > The fatigue failure of multiple hinge ribs associated with the right outboard aileron, which resulted in abnormal aileron movement and airframe vibration. Contributing to the failure was the mis-rigged condition of the right outboard aileron, which increased…
- [NTSB ANC24FA029](https://openairdocs.org/ntsb/ANC24FA029.md): Douglas C54D · Fairbanks, AK · Accident · 2 fatal · Class 3 · Field · Final report · Apr 23, 2024 · N3054V · Destroyed
  > A loss of power of the No. 1 engine for reasons that could not be determined, and the incorrect installation of a B-nut fitting in the propeller feathering system, which allowed engine oil to spray onto the exhaust system when the propeller was feathered…
- [NTSB ERA21LA177](https://openairdocs.org/ntsb/ERA21LA177.md): Forisch Edward Bushby Mustang M II · Worcester, MA · Accident · No injuries · Class 3 · Limited · Final report · Apr 6, 2021 · N61EF · Substantial damage
  > Binding of the left aileron bellcrank push/pull rod, which resulted in an uncommanded right turn.
- [NTSB CEN16LA244](https://openairdocs.org/ntsb/CEN16LA244.md): Pollack Quicksilver SPRINT2S · Bullard, TX · Accident · No injuries · Limited investigation · Final report · Jul 3, 2016 · N250AB · Substantial damage
  > A loss of airplane control during landing for reasons that could not be determined, because the airplane sank and was not recovered.
- [NTSB WPR11LA218](https://openairdocs.org/ntsb/WPR11LA218.md): Piper PA46-500TP · Rock Springs, WY · Accident · No injuries · Limited investigation · Final report · May 3, 2011 · N46ME · Substantial damage
  > The overstress fracture of the right aileron midspan hinge bracket due to modal vibrations created by a deflated right main landing gear tire during the takeoff roll.
- [NTSB CEN11IA280](https://openairdocs.org/ntsb/CEN11IA280.md): Beech 90B · Chickasha, OK · Incident · No injuries · Incident investigation · Final report · Apr 11, 2011 · N37OU · Minor damage
  > The mechanic's improper installation of the aileron.
- [NTSB CEN11LA192](https://openairdocs.org/ntsb/CEN11LA192.md): Beech E-90 · Des Moines, IA · Accident · No injuries · Limited investigation · Final report · Feb 15, 2011 · N51DN · Substantial damage
  > The improper installation of the right aileron by maintenance personnel.
- [NTSB CEN10FA162](https://openairdocs.org/ntsb/CEN10FA162.md): Maule M-6-235 · Bennett, CO · Accident · No injuries · Field investigation · Final report · Jan 30, 2010 · N7613X · Substantial damage
  > The pilot’s failure to maintain clearance from a utility line while maneuvering.
- [NTSB CEN10FA042](https://openairdocs.org/ntsb/CEN10FA042.md): Zenith Zodiac 601 XL · Agnos, AR · Accident · 1 fatal · Field investigation · Final report · Nov 6, 2009 · N538CJ · Destroyed
  > The in-flight separation of both wings due to aileron flutter. The aileron flutter was the result of inadequate wing stiffness and strength and the lack of aileron counterbalances.
- [NTSB WPR09FA141](https://openairdocs.org/ntsb/WPR09FA141.md): Stephenson Zodiac 601 XL · Antelope Island, UT · Accident · 1 fatal · Field investigation · Final report · Mar 3, 2009 · N3683X · Substantial damage
  > The in-flight failure of both wings due to aileron flutter. The aileron flutter was the result of inadequate wing stiffness and the lack of aileron counterbalances.
- [NTSB LAX08LA226](https://openairdocs.org/ntsb/LAX08LA226.md): Jonsson Sonerai · Hood River, OR · Accident · No injuries · Limited investigation · Final report · Jul 11, 2008 · N8050R · Substantial damage
  > The pilot's failure to maintain directional control during the emergency landing roll with a tailwind. Contributing was the partial separation of the left aileron that prompted the pilot to attempt the emergency 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 c."mKey" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01035751'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01035751/cases

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