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

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 SEA04LA114](https://openairdocs.org/ntsb/SEA04LA114.md): Bell 47G-3B-1 · Medford, OR · Accident · Serious injuries · Limited investigation · Final report · Jun 23, 2004 · N73909 · Substantial damage
  > The pilot's failure to maintain clearance from a tree while maneuvering. Trees were a factor.
- [NTSB SEA03LA189](https://openairdocs.org/ntsb/SEA03LA189.md): Bell 47G-3B-1 · Diamond, OR · Accident · Serious injuries · Limited investigation · Final report · Sep 12, 2003 · N48020 · Substantial damage
  > Loss of engine power for undetermined reasons during hover.
- [NTSB SEA00LA124](https://openairdocs.org/ntsb/SEA00LA124.md): Bell 47G · Haines, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 4, 2000 · N30DP · Substantial damage
  > The pilot's failure to correctly judge his rate of descent and his failure to initiate his level off soon enough to keep the helicopter from impacting the terrain. Factors include hilly terrain near the edge of the field he was spraying.
- [NTSB SEA99LA098](https://openairdocs.org/ntsb/SEA99LA098.md): Bell 47G3B2A · Pendleton, OR · Accident · No injuries · Limited investigation · Final report · Jun 10, 1999 · N24MP · Substantial damage
  > A fouled external load cable, and the pilot's operation of the helicopter with a non-approved external bucket installation, resulting in misrouted hydraulic lines and consequent malfunction of the external load release system.
- [NTSB SEA94LA065](https://openairdocs.org/ntsb/SEA94LA065.md): Bell 47G-3B-1 · Gold Hill, OR · Accident · Serious injuries · Limited investigation · Final report · Feb 24, 1994 · N73909 · Destroyed
  > Separation of the crossover fuel line, and the inability of the pilot in command to maintain a proper rate of descent during the autorotation.
- [NTSB SEA87LA118](https://openairdocs.org/ntsb/SEA87LA118.md): Bell 47G-3B-2 · Milton-Freewatr, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 12, 1987 · N2219W · Destroyed
  > The pilot was hovering up rising terrain at a slow airspeed, at 15 feet above the ground while on an agricultural spraying flight and encountered settling with power. The aircraft entered an uncontrolled descent and impacted the ground.
- [NTSB SEA86LA182](https://openairdocs.org/ntsb/SEA86LA182.md): Bell 47G3B1 · Albany, OR · Accident · Serious injuries · Limited investigation · Final report · Jul 29, 1986 · N9417A · Substantial damage
  > A Bell 47G3B1 crashed into the south santiam river after contacting power lines while on an instructional flight. The CFI (helicopter) plt received serious injuries and the private plt (airplane) helicopter student received minor injuries. The helicopter…
- [NTSB SEA86LA105](https://openairdocs.org/ntsb/SEA86LA105.md): Bell 47G3B1 · Albany, OR · Accident · No injuries · Limited investigation · Final report · Apr 15, 1986 · N9417A · Substantial damage
  > The plt reported that after aprx 15 minutes of flt, the eng sputtered 2 or 3 times. An autorotation was performed onto rough terrain during which the tail rotor drive shaft was damaged by the main rotor blades. Post accident inspection revealed a hole in the…
- [NTSB SEA85LA174](https://openairdocs.org/ntsb/SEA85LA174.md): Bell 47G-3B-1 · Lebanon, OR · Accident · No injuries · Limited investigation · Final report · Jul 19, 1985 · N9417A · Substantial damage
  > The plt stated he performed 4 circling approaches over a sand bar and on the 5th approcah, rotor RPM decayed. Unable to regain the RPM, a hard landing resulted during which the main rotor blades severed the tailrotor.
- [NTSB SEA84LA162](https://openairdocs.org/ntsb/SEA84LA162.md): Bell 47G-3B · Eagle Point, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 5, 1984 · N73224 · Substantial damage
  > The acft main rotor struck the ground during landing. The commercial plt had taken 2 passengers for a sight seeing tour and during landing he said one of them grabbed his right arm at 4 ft AGL and he was unable to recover before ground contact.
- [NTSB SEA81DYM48](https://openairdocs.org/ntsb/SEA81DYM48.md): Bell 47G3B1 · Albany, OR · Accident · No injuries · Closed · Sep 30, 1981 · N2243W · Substantial damage
- [NTSB SEA80DYM29](https://openairdocs.org/ntsb/SEA80DYM29.md): Bell 47G-3B · Albany, OR · Accident · No injuries · Closed · Mar 28, 1980 · N2243W · Substantial damage
- [NTSB SEA80FA018](https://openairdocs.org/ntsb/SEA80FA018.md): Bell 47G3B1 · Jefferson, OR · Accident · 2 fatal · Closed · Jan 30, 1980 · N73285 · Destroyed
- [NTSB SEA78FYM25](https://openairdocs.org/ntsb/SEA78FYM25.md): Bell 47G · Kings Valley, OR · Accident · No injuries · Closed · Apr 15, 1978 · N2919W · Substantial damage
- [NTSB SEA78DYK11](https://openairdocs.org/ntsb/SEA78DYK11.md): Bell 47G3B1 · Myrtle Creek, OR · Accident · No injuries · Closed · Mar 6, 1978 · N73984 · Substantial damage
- [NTSB SEA78FYM14](https://openairdocs.org/ntsb/SEA78FYM14.md): Bell 47G3B2 · Milton-Freewtr, OR · Accident · Serious injuries · Closed · Jan 4, 1978 · N2906W · Substantial damage
- [NTSB SEA78FYM02](https://openairdocs.org/ntsb/SEA78FYM02.md): Bell 47G3B1 · Alsea, OR · Accident · Minor injuries · Closed · Oct 2, 1977 · N1199W · Substantial damage
- [NTSB SEA71DVQ22](https://openairdocs.org/ntsb/SEA71DVQ22.md): Bell 47G3B · Days Creek, OR · Accident · No injuries · Closed · Apr 7, 1971 · N8455E · Substantial damage
- [NTSB SEA71DVQ16](https://openairdocs.org/ntsb/SEA71DVQ16.md): Bell 47G-2 · Sixes, OR · Accident · No injuries · Closed · Dec 21, 1970 · N73284 · Substantial damage
- [NTSB SEA67A0045](https://openairdocs.org/ntsb/SEA67A0045.md): Bell 47G3B1 · Yachats, OR · Accident · No injuries · Closed · Dec 14, 1966 · N8554F · 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" = 'OR' 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=OR

---
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.