# NTSB investigations: Bell 47G-2, 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.

Page 1 of 2 · 51 cases

## Latest cases

- [NTSB SEA05LA138](https://openairdocs.org/ntsb/SEA05LA138.md): Bell 47G-2A · Oroville, WA · Accident · No injuries · Limited investigation · Final report · Jul 5, 2005 · N38926 · Substantial damage
  > The failure of the throttle cable housing, which permitted the engine's RPM to decay to the idle position. Contributing factors were the trees and the lack of suitable terrain for a forced landing.
- [NTSB SEA99LA149](https://openairdocs.org/ntsb/SEA99LA149.md): Bell 47G-2 · Benton City, WA · Accident · 1 fatal · Limited investigation · Final report · Aug 26, 1999 · N11VH · Destroyed
  > A loss of power for undetermined reasons and the failure of the pilot to maintain adequate rotor RPM following the power loss. Contributing factors were the pilot's lack of certification and total experience.
- [NTSB SEA95LA126](https://openairdocs.org/ntsb/SEA95LA126.md): Bell 47G-2 · Zillah, WA · Accident · Serious injuries · Limited investigation · Final report · Jun 24, 1995 · N1968H · Substantial damage
  > The failure of company maintenance personnel to perform adequate inspections of the helicopter, and the failure of the cyclic control rod due to corrosion.
- [NTSB SEA91LA077](https://openairdocs.org/ntsb/SEA91LA077.md): Bell BH-47G2A · Waitsburg, WA · Accident · No injuries · Limited investigation · Final report · Mar 31, 1991 · N38926 · Substantial damage
  > The improper installation of the main rotor mast nut and lock washer by maintenance personnel which resulted in the separation of the main rotor system.
- [NTSB SEA89LA120](https://openairdocs.org/ntsb/SEA89LA120.md): Bell 47G-2 · Centralia, WA · Accident · Minor injuries · Limited investigation · Final report · Jun 24, 1989 · N1161N · Destroyed
  > The pilot misjudged his clearance over trees, which resulted in an in-flight tail rotor strike with the trees and loss of tail rotor control. The trees were a related factor.
- [NTSB SEA89LA098](https://openairdocs.org/ntsb/SEA89LA098.md): Bell 47G-2 · Buena, WA · Accident · Serious injuries · Limited investigation · Final report · Jun 2, 1989 · N41721 · Destroyed
  > The pilot's failure to maintain an adequate visual lookout and clearance to avoid the power lines.
- [NTSB SEA87LA172](https://openairdocs.org/ntsb/SEA87LA172.md): Bell 47G2 · Grandview, WA · Accident · Serious injuries · Limited investigation · Final report · Aug 21, 1987 · N74161 · Substantial damage
  > After the completion of spray operations the pilot was attempting to place the helicopter onto a trailer. The pilot misjudged his position, over-corrected, and then lost control of the helicopter, striking the ground.
- [NTSB SEA86LA168](https://openairdocs.org/ntsb/SEA86LA168.md): Bell 47G2A · Chehalis, WA · Accident · No injuries · Limited investigation · Final report · Jul 13, 1986 · N12848 · Substantial damage
  > During an aerial applications maneuver, a complete loss of power occurred. The power loss was caused by failure of the connecting rod bolt. The acft was too low for autorotation and the aircraft struck the ground tail low. The main rotor blade then struck the…
- [NTSB SEA86LA143](https://openairdocs.org/ntsb/SEA86LA143.md): Bell 47G-2 · Zillah, WA · Accident · No injuries · Limited investigation · Final report · Jun 12, 1986 · N11VH · Destroyed
  > En route to the local spray area a total loss of power occurred along with a loss of oil pressure. The acft was aprx 200 ft AGL over a pear orchard. The plt was attempting to autorotate onto a nearby road but the left skid caught the roof top of a metal shed.…
- [NTSB SEA85LA155](https://openairdocs.org/ntsb/SEA85LA155.md): Bell 47G2 · Roosevelt, WA · Accident · No injuries · Limited investigation · Final report · Jul 2, 1985 · N11VH · Substantial damage
  > A total loss of power occurred while on a CFR 137 flight, due to fuel exhaustion. Although the fuel gauge showed 1/2 tank of fuel, the pilot failed to visually check the fuel prior to this flight. During autorotation onto a wheat field a hard landing occurred…
- [NTSB SEA84LA132](https://openairdocs.org/ntsb/SEA84LA132.md): Bell 47G2A · Buena, WA · Accident · No injuries · Limited investigation · Final report · Jun 14, 1984 · N11VH · Substantial damage
  > Main rotor blades contacted a wind machine during an aerial application flt. Helicopter settled into trees and rolled over. Plt said he knew the machine was there but had forgotten.
- [NTSB SEA83LA122](https://openairdocs.org/ntsb/SEA83LA122.md): Bell 47G-2 · Zillah, WA · Accident · No injuries · Limited investigation · Final report · Jun 11, 1983 · N41721 · Substantial damage
  > The rotorcraft made a hard landing after colliding with trees during an autorotation. The acft had experienced an enginefailure while on a repositioning flight between aerial application operations and was forced to land. The acft was autorotated into an…
- [NTSB SEA82DA112](https://openairdocs.org/ntsb/SEA82DA112.md): Bell 47G-2 · Harrah, WA · Accident · Serious injuries · Final report · Jul 15, 1982 · N6145C · Substantial damage
  > The pilot reported that before taking off, the fuel quantity guages indicated there was sufficient fuel to complete one more load and still have an adequate reserve. After dispensing the load, the engine lost power while he was returning to the nurse truck.…
- [NTSB SEA82DA072](https://openairdocs.org/ntsb/SEA82DA072.md): Bell 47G-2 · Grandview, WA · Accident · No injuries · Final report · May 18, 1982 · N11VH · Substantial damage
  > While dispensing herbicide (systox) over an apple orchard the pilot sensed that the engine was binding followed by a power loss. The pilot elected to dump the herbicide and performed a power-off autorotation landing in a grape vineyard. Investigation revealed…
- [NTSB SEA82DA050](https://openairdocs.org/ntsb/SEA82DA050.md): Bell 47G-2A · Lyle, WA · Accident · No injuries · Final report · Apr 10, 1982 · N11VH · Substantial damage
  > During takeoff with a load of fertilizer, insufficient power was available to maintain engine and rotor RPM and sustain flight. The pilot dumped the load, but was unable to avoid ground contact. The tail rotor struck first and separated from the aircraft. The…
- [NTSB SEA81FYP12](https://openairdocs.org/ntsb/SEA81FYP12.md): Bell 47G-2 · Union Gap, WA · Accident · No injuries · Closed · Apr 2, 1981 · N74161 · Substantial damage
- [NTSB SEA78DYP33](https://openairdocs.org/ntsb/SEA78DYP33.md): Bell 47G-2 · Benton City, WA · Accident · No injuries · Closed · Jun 7, 1978 · N31552 · Destroyed
- [NTSB SEA78DYM23](https://openairdocs.org/ntsb/SEA78DYM23.md): Bell 47G-2 · Goldendale, WA · Accident · No injuries · Closed · Apr 7, 1978 · N41721 · Substantial damage
- [NTSB SEA76FYG53](https://openairdocs.org/ntsb/SEA76FYG53.md): Bell 47G-2 · Eltopia, WA · Accident · Minor injuries · Closed · Jun 9, 1976 · N2483B · Destroyed
- [NTSB SEA76DYG01](https://openairdocs.org/ntsb/SEA76DYG01.md): Bell 47G-2 · Moses Lake, WA · Accident · Minor injuries · Closed · Jul 1, 1975 · N984B · Destroyed
- [NTSB SEA75DYG39](https://openairdocs.org/ntsb/SEA75DYG39.md): Bell 47G-2 · Mesa, WA · Accident · No injuries · Closed · May 22, 1975 · N8448E · Substantial damage
- [NTSB SEA75AS022](https://openairdocs.org/ntsb/SEA75AS022.md): Bell 47G-2 · Kingston, WA · Accident · 1 fatal · Closed · Nov 4, 1974 · N5160B · Destroyed
- [NTSB SEA75FYG10](https://openairdocs.org/ntsb/SEA75FYG10.md): Bell 47G-2 · Quincy, WA · Accident · Serious injuries · Closed · Aug 27, 1974 · N6717D · Destroyed
- [NTSB SEA75DYG07](https://openairdocs.org/ntsb/SEA75DYG07.md): Bell 47G-2 · Royal City, WA · Accident · No injuries · Closed · Aug 14, 1974 · N6717D · Substantial damage
- [NTSB SEA75FYE11](https://openairdocs.org/ntsb/SEA75FYE11.md): Bell 47G-2A · Mercer Isl, WA · Accident · Serious injuries · Closed · Aug 11, 1974 · N88AR · Destroyed
- [NTSB SEA74DYG49](https://openairdocs.org/ntsb/SEA74DYG49.md): Bell 47G-2 · Ephrata, WA · Accident · No injuries · Closed · Jun 24, 1974 · N2899B · Substantial damage
- [NTSB SEA74DYG38](https://openairdocs.org/ntsb/SEA74DYG38.md): Bell 47G-2 · Ephrata, WA · Accident · Minor injuries · Closed · May 4, 1974 · N7887B · Substantial damage
- [NTSB SEA74DYE42](https://openairdocs.org/ntsb/SEA74DYE42.md): Bell 47G-2 · Centralia, WA · Accident · No injuries · Closed · Apr 18, 1974 · N984B · Substantial damage
- [NTSB SEA74DYE39](https://openairdocs.org/ntsb/SEA74DYE39.md): Bell 47G-2 · Forks, WA · Accident · No injuries · Closed · Mar 3, 1974 · N5161B · Substantial damage
- [NTSB SEA74DYC25](https://openairdocs.org/ntsb/SEA74DYC25-186907.md): Bell 47G-2 · Spokane, WA · Accident · No injuries · Closed · Feb 24, 1974 · N59H · Substantial damage
- [NTSB SEA74DYE20](https://openairdocs.org/ntsb/SEA74DYE20.md): Bell 47F-2 · Forks, WA · Accident · No injuries · Closed · Oct 8, 1973 · N5161B · Substantial damage
- [NTSB SEA73DYG02](https://openairdocs.org/ntsb/SEA73DYG02.md): Bell 47G-2 · Twisp, WA · Accident · No injuries · Closed · Jul 7, 1972 · N6717D · Substantial damage
- [NTSB SEA72DYG45](https://openairdocs.org/ntsb/SEA72DYG45.md): Bell 47G-2 · Warden, WA · Accident · No injuries · Closed · Jun 4, 1972 · N1657 · Substantial damage
- [NTSB SEA72DYE16](https://openairdocs.org/ntsb/SEA72DYE16.md): Bell 47G2 · Clallam Bay, WA · Accident · No injuries · Closed · Oct 6, 1971 · N5160B · Substantial damage
- [NTSB SEA71FYE33](https://openairdocs.org/ntsb/SEA71FYE33.md): Bell 47G2 · Eatonville, WA · Accident · Serious injuries · Closed · Jun 5, 1971 · N1968H · Substantial damage
- [NTSB SEA71FWG17](https://openairdocs.org/ntsb/SEA71FWG17.md): Bell 47G-2 · Wenatchee, WA · Accident · Minor injuries · Closed · Sep 9, 1970 · N2483B · Substantial damage
- [NTSB SEA70FWD13](https://openairdocs.org/ntsb/SEA70FWD13.md): Bell 47-G2 · Maple Valley, WA · Accident · No injuries · Closed · May 9, 1970 · N6141 · Substantial damage
- [NTSB SEA70DWD05](https://openairdocs.org/ntsb/SEA70DWD05.md): Bell 47G-2 · Rochester, WA · Accident · No injuries · Closed · Feb 25, 1970 · N2899B · Substantial damage
- [NTSB SEA70F0119](https://openairdocs.org/ntsb/SEA70F0119.md): Bell 47G-2 · Loomis, WA · Accident · 2 fatal · Closed · Oct 31, 1969 · N2803B · Destroyed
- [NTSB SEA70D0034](https://openairdocs.org/ntsb/SEA70D0034.md): Bell 47G-2 · Centralia, WA · Accident · Serious injuries · Closed · May 18, 1969 · N2498B · Destroyed
- [NTSB SEA69D0014](https://openairdocs.org/ntsb/SEA69D0014.md): Bell 47G-2 · Mineral, WA · Accident · Minor injuries · Closed · Jun 5, 1968 · N2803B · Substantial damage
- [NTSB SEA68D0297](https://openairdocs.org/ntsb/SEA68D0297.md): Bell 47G-2 · Mansfield, WA · Accident · No injuries · Closed · May 10, 1968 · N6717D · Substantial damage
- [NTSB SEA68D0296](https://openairdocs.org/ntsb/SEA68D0296.md): Bell 47G-2 · Bridgeport, WA · Accident · No injuries · Closed · Apr 24, 1968 · N6717D · Substantial damage
- [NTSB SEA67A0071](https://openairdocs.org/ntsb/SEA67A0071.md): Bell 47G-2 · Kennewick, WA · Accident · No injuries · Closed · Jun 1, 1967 · N6145C · Substantial damage
- [NTSB SEA67A0057](https://openairdocs.org/ntsb/SEA67A0057.md): Bell 47G-2 · Seattle, WA · Accident · No injuries · Closed · Apr 3, 1967 · N8448E · Substantial damage
- [NTSB SEA66A0032](https://openairdocs.org/ntsb/SEA66A0032.md): Bell 47G-2 · 38mi E.Kelso, WA · Accident · Minor injuries · Closed · Nov 23, 1965 · N6145C · Substantial damage
- [NTSB SEA65A0047](https://openairdocs.org/ntsb/SEA65A0047.md): Bell 47G-2 · Wenatchee, WA · Accident · Minor injuries · Closed · Mar 13, 1965 · N2483B · Destroyed
- [NTSB UNK64X3325](https://openairdocs.org/ntsb/UNK64X3325.md): Bell B-47G2 · Monitor, WA · Incident · No injuries · Closed · Aug 11, 1964 · N2483B · No damage
- [NTSB UNK64X2935](https://openairdocs.org/ntsb/UNK64X2935.md): Bell 47D1 · Toppenish, WA · Accident · No injuries · Closed · Jul 19, 1964 · N1161N · Substantial damage
- [NTSB UNK64X2719](https://openairdocs.org/ntsb/UNK64X2719.md): Bell 47G3 · Manson, WA · Accident · 1 fatal · Closed · Jul 8, 1964 · N8441E · Destroyed

Next page: https://openairdocs.org/ntsb.md?model=1181008&state=WA&page=2

## 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.aircraft_model_code IN ('1181008'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=1181008&state=WA

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