# NTSB investigations: Lycoming IO-540-AE1A5, 2017

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 GAA18CA089](https://openairdocs.org/ntsb/GAA18CA089.md): Robinson Helicopter R44 · Newark, OH · Accident · Minor injuries · Data collection · Final report · Dec 13, 2017 · N441ML · Substantial damage
  > The pilot’s failure to maintain lateral control of the helicopter during takeoff, which resulted in dynamic rollover.
- [NTSB GAA18CA066](https://openairdocs.org/ntsb/GAA18CA066.md): Robinson Helicopter R44 · New Orleans, LA · Accident · No injuries · Data collection · Final report · Nov 29, 2017 · N744WT · Substantial damage
  > The pilot’s failure to land the helicopter with both skids on the trailer platform, which resulted in a loss of control.
- [NTSB WPR18LA031](https://openairdocs.org/ntsb/WPR18LA031.md): Robinson Helicopter R44 · Page, AZ · Accident · Minor injuries · Limited investigation · Final report · Nov 11, 2017 · N744BS · Substantial damage
  > The pilot's failure to maintain pitch control of the helicopter while transitioning from a hover to forward flight.
- [NTSB ANC17LA040](https://openairdocs.org/ntsb/ANC17LA040.md): Robinson Helicopter R44 · Solomon, AK · Accident · No injuries · Class 3 · Limited · Final report · Aug 3, 2017 · N4138M · Substantial damage
  > The pilot's failure to maintain adequate altitude above water, and his loss of situational awareness, which resulted in an inadvertent descent and collision with water.
- [NTSB WPR17LA159](https://openairdocs.org/ntsb/WPR17LA159.md): Robinson Helicopter R44 II · Van Nuys, CA · Accident · Serious injuries · Limited investigation · Final report · Jul 21, 2017 · N3254E · Substantial damage
  > An improper repair of the right magneto's tachometer and governor signal wire, which failed during cruise flight and initiated a simultaneous malfunction of both the engine tachometer and governor control system, which resulted in erroneous and contradictory…
- [NTSB GAA17CA401](https://openairdocs.org/ntsb/GAA17CA401.md): Robinson Helicopter R44 · Paoli, IN · Accident · No injuries · Data collection · Final report · Jul 7, 2017 · N3203D · Substantial damage
  > The pilot's decision to maneuver an overgross weight helicopter at a low altitude and airspeed with a gusting tailwind, which resulted in a high descent rate and collision with terrain. Contributing to the accident was the pilot's self-induced pressure to…
- [NTSB GAA17CA383](https://openairdocs.org/ntsb/GAA17CA383.md): Robinson Helicopter R44 · Easton, PA · Accident · No injuries · Data collection · Final report · Jul 4, 2017 · N3025J · Substantial damage
  > The pilot’s distraction during liftoff due to the tail rotor chip warning light illuminating, which resulted in the helicopter drifting right, the skid touching down, and a dynamic roll-over.
- [NTSB WPR17LA140](https://openairdocs.org/ntsb/WPR17LA140.md): Robinson R44 · Bella Vista, CA · Accident · Serious injuries · Limited investigation · Final report · Jul 3, 2017 · N488AS · Substantial damage
  > A partial loss of engine power during low-altitude maneuvering for reasons that could not be determined because postaccident examinations of the engine and airframe revealed no evidence of any preaccident mechanical malfunctions or failures that would have…
- [NTSB CEN17LA219](https://openairdocs.org/ntsb/CEN17LA219.md): Robinson Helicopter R44 II · Douglas, WY · Accident · Serious injuries · Limited investigation · Final report · Jun 9, 2017 · N590GG · Substantial damage
  > The pilot's inability to control the helicopter's descent after encountering a sudden wind shift to a tailwind while performing a near maximum gross weight landing at a high density altitude.
- [NTSB CEN17FA209](https://openairdocs.org/ntsb/CEN17FA209.md): Robinson Helicopter R44 II · Dimmitt, TX · Accident · 1 fatal · Field investigation · Final report · Jun 3, 2017 · N7091F · Substantial damage
  > The pilot's incapacitation due to scarring from previous heart attacks and severe hypertrophy of the left ventricular wall which resulted in arrhythmia and a loss of control while maneuvering at low altitude.
- [NTSB ERA17LA168](https://openairdocs.org/ntsb/ERA17LA168.md): Robinson R44 · Newton, NC · Accident · Minor injuries · Limited investigation · Final report · Apr 27, 2017 · N728CB · Substantial damage
  > The pilot's failure to maintain an adequate airspeed during out-of-ground-effect maneuvering at a low airspeed with a tailwind, which resulted in a loss of helicopter control due to a loss of tail rotor effectiveness.

## 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") = 2017
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41899'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41899&year=2017

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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.