# NTSB investigations: Lycoming TVO-435-GIA, WA

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 SEA05CA122](https://openairdocs.org/ntsb/SEA05CA122.md): Bell 47G-3B-1 · Brewster, WA · Accident · Minor injuries · Data collection · Final report · Jun 19, 2005 · N8554F · Substantial damage
  > The pilot's inadvertent anti-torque pedal input, which resulted in a loss of control and collision with trees while hovering.
- [NTSB SEA00FA061](https://openairdocs.org/ntsb/SEA00FA061.md): Bell 47G-3B-1 · Stanwood, WA · Accident · 1 fatal · Field investigation · Final report · Apr 2, 2000 · N3377H · Destroyed
  > The disengagement of the oil jet fitting from its threaded receptacle at the forward end of the engine crankshaft. This resulted in excessive oil within the clutch assembly, the subsequent slipping of the clutch, and ultimately the disengagement of the rotor…
- [NTSB SEA98LA069](https://openairdocs.org/ntsb/SEA98LA069.md): Bell 47G3B2A · Stanwood, WA · Accident · No injuries · Limited investigation · Final report · May 3, 1998 · N7965J · Substantial damage
  > The failure of the number two connecting rod, which led to additional internal engine damage and a complete loss of power. Factors include soft terrain in the area where the pilot found it necessary to execute his forced landing.
- [NTSB SEA97LA112](https://openairdocs.org/ntsb/SEA97LA112.md): Bell 47G-3B · Snohomish, WA · Accident · Minor injuries · Limited investigation · Final report · May 15, 1997 · N8491E · Substantial damage
  > the pilot's encounter with of a loss of tail rotor effectiveness (LTE) situation, and his subsequent inadequate remedial action. Related factors included: wind conditions that were conducive to an unanticipated right yaw event, and the pilot's limited…
- [NTSB SEA94LA042](https://openairdocs.org/ntsb/SEA94LA042.md): Bell 47G3B1 · Mesa, WA · Accident · No injuries · Limited investigation · Final report · Nov 15, 1993 · N1181W · Substantial damage
  > The pilot's improper flare. Factors include excessive airspeed while approaching the flare.
- [NTSB SEA91LA109](https://openairdocs.org/ntsb/SEA91LA109.md): Bell 47G-3B-1 · Malott, WA · Accident · No injuries · Limited investigation · Final report · May 19, 1991 · N73903 · Destroyed
  > An undetermined failure of the fuel pump casing resulting in an in flight fire and loss of engine power.
- [NTSB SEA90LA048](https://openairdocs.org/ntsb/SEA90LA048.md): Bell BH-47G3B2 · Des Moines, WA · Accident · Minor injuries · Limited investigation · Final report · Mar 1, 1990 · N4073G · Destroyed
  > Partial loss of engine power, cause undetermined. The aircraft was not recovered and examination of the engine was not possible.
- [NTSB SEA89LA175](https://openairdocs.org/ntsb/SEA89LA175.md): Bell 47G3B2 · Monitor, WA · Accident · 1 fatal · Limited investigation · Final report · Sep 18, 1989 · N83111 · Destroyed
  > The pilot failed to maintain aircraft separation from obstacles on the ground. A factor in the accident was the bright glare from the rising sun.
- [NTSB SEA86LA176](https://openairdocs.org/ntsb/SEA86LA176.md): Bell 47G-3B1 · Burbank, WA · Accident · 1 fatal · Limited investigation · Final report · Jul 23, 1986 · N1197W · Minor damage
  > The helicopter had landed for reloading and was stationary with rotors idling. A ground loader person approached the helicopter over a small sandy knoll and was struck by the main rotor, sustaining fatal injury.
- [NTSB SEA81DYP21](https://openairdocs.org/ntsb/SEA81DYP21.md): Bell 47G3B2 · Walla Walla, WA · Accident · Serious injuries · Closed · Jun 11, 1981 · N14827 · Substantial damage
- [NTSB SEA80FYP34](https://openairdocs.org/ntsb/SEA80FYP34.md): Bell 47G-2 · Sunnyside, WA · Accident · No injuries · Closed · Aug 23, 1980 · N73284 · Substantial damage
- [NTSB SEA79DYP14](https://openairdocs.org/ntsb/SEA79DYP14.md): Bell 47G-3B · Wenatchee, WA · Accident · No injuries · Closed · Apr 26, 1979 · N6712D · Substantial damage
- [NTSB SEA77FYP29](https://openairdocs.org/ntsb/SEA77FYP29.md): Bell 47G3B1 · Pomeroy, WA · Accident · No injuries · Closed · Apr 26, 1977 · N73919 · Substantial damage
- [NTSB SEA76DYG74](https://openairdocs.org/ntsb/SEA76DYG74.md): Bell 47G-3B · Cashmere, WA · Accident · No injuries · Closed · Sep 15, 1976 · N6712D · Substantial damage
- [NTSB SEA76DYE41](https://openairdocs.org/ntsb/SEA76DYE41.md): Bell 47G-3B · Forks, WA · Accident · Minor injuries · Closed · May 12, 1976 · N3794G · Substantial damage
- [NTSB SEA76FYG50](https://openairdocs.org/ntsb/SEA76FYG50.md): Bell 47G-3B · Spokane, WA · Accident · No injuries · Closed · May 10, 1976 · N58131 · Substantial damage
- [NTSB SEA75DYG12](https://openairdocs.org/ntsb/SEA75DYG12.md): Bell 47G-2 · Ruff, WA · Accident · No injuries · Closed · Sep 11, 1974 · N3794G · Substantial damage
- [NTSB SEA73FYG13](https://openairdocs.org/ntsb/SEA73FYG13.md): Bell 47-G2A · Selah, WA · Accident · 1 fatal · Closed · Sep 23, 1972 · N73284 · Substantial damage
- [NTSB SEA72DYG40](https://openairdocs.org/ntsb/SEA72DYG40.md): Bell 47G2 · Moses Lake, WA · Accident · No injuries · Closed · May 26, 1972 · N6712D · Destroyed
- [NTSB SEA71FWG15](https://openairdocs.org/ntsb/SEA71FWG15.md): Bell 47G3B1 · Colville, WA · Accident · Minor injuries · Closed · Sep 2, 1970 · N3097G · Substantial damage
- [NTSB SEA69D0183](https://openairdocs.org/ntsb/SEA69D0183.md): Bell 47G-2 · Chelan, WA · Accident · No injuries · Closed · Feb 14, 1969 · N6712D · Substantial damage
- [NTSB SEA68A0033](https://openairdocs.org/ntsb/SEA68A0033.md): Bell 47G3B1 · Snoqualmie P, WA · Accident · No injuries · Closed · Oct 11, 1967 · N1321X · Substantial damage
- [NTSB SEA68A0007](https://openairdocs.org/ntsb/SEA68A0007.md): Bell 47G-2 · Palisades, WA · Accident · No injuries · Closed · Jul 17, 1967 · N3794G · Substantial damage
- [NTSB SEA67A0046](https://openairdocs.org/ntsb/SEA67A0046.md): Bell 47G-3B · Pomeroy, WA · Accident · No injuries · Closed · Jan 4, 1967 · N73919 · Substantial damage
- [NTSB SEA65A0059](https://openairdocs.org/ntsb/SEA65A0059.md): Bell 47G3B1 · Marblemount, WA · Accident · Minor injuries · Closed · Apr 28, 1965 · N68645 · Substantial damage
- [NTSB UNK64X3780](https://openairdocs.org/ntsb/UNK64X3780.md): Bell 47G2 · Manson, WA · Accident · No injuries · Closed · Sep 4, 1964 · N3794G · Substantial damage

## 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" = 'WA' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41526'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41526&state=WA

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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.