# NTSB investigations: Lycoming VO-540 series, 1984

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 LAX84LA494](https://openairdocs.org/ntsb/LAX84LA494.md): Hiller UH12ET · Yuma, AZ · Accident · Serious injuries · Limited investigation · Final report · Sep 25, 1984 · N9278Z · Destroyed
  > The pilot stated that he was carrying a load of pesticide for application on a broccoli field. The aircraft was in level flight, approximately 4 to 8 feet AGL when it became uncontrollable and impacted the ground. The aircraft was consumed by a post crash…
- [NTSB SEA84LA174](https://openairdocs.org/ntsb/SEA84LA174.md): Hiller UH-12E · Redmond, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 1984 · N1043L · Substantial damage
  > The acft collided with the ground after a in-flt main rotor blade separation during an aerial application flt. Inspection of the fracture surface of the failed blade revealed characteristics consistant with the high stress, low cycle fatigue. Lab findings…
- [NTSB MKC84LA205](https://openairdocs.org/ntsb/MKC84LA205.md): Hiller H-23D · Neelyville, MO · Accident · No injuries · Limited investigation · Final report · Jul 9, 1984 · N48313 · Destroyed
  > The acft rolled over during an emergency landing. The plt claimed that the rotor disengaged at about 30 ft AGL during takeoff. After the accident the upper half of the yoke control was found fractured. A lab report stated that no materialdefects were related…
- [NTSB NYC84LA212](https://openairdocs.org/ntsb/NYC84LA212.md): Hiller 12E · Meadville, PA · Accident · No injuries · Limited investigation · Final report · Jun 17, 1984 · N4033P · Substantial damage
  > The acft flew into wires during a crop spraying mission. The acft was flying at about 5-10 ft when a flash was seen overhead. The acft vibrated and slowed before impacting the ground and rolling over.
- [NTSB DEN84LA177](https://openairdocs.org/ntsb/DEN84LA177.md): Hiller UH-12E · Granby, CO · Accident · No injuries · Limited investigation · Final report · Jun 11, 1984 · N504HA · Substantial damage
  > The helicopter plt was on a reconnaissance flt to survey a hilltop landing site in mountainous terrain. When he arrived, he made a high reconnaissance pass, then began a low reconnaissance apch. He estimated the wind was from 210 deg at 10 to 15 KTS with…
- [NTSB LAX84LA294](https://openairdocs.org/ntsb/LAX84LA294.md): Hiller UH-12E (Soloy) · Delano, CA · Accident · Minor injuries · Limited investigation · Final report · May 10, 1984 · N90461 · Substantial damage
  > The helicopter experienced an inflt failure of an eng mount, pn 63181-5, which bent the collective control rod & forced the the collective pitch into the up position. The helicopter then settled into the grapes it was spraying & made a hard landing. An…
- [NTSB SEA84LA091](https://openairdocs.org/ntsb/SEA84LA091.md): Hiller UH-12E · Buxton, OR · Accident · No injuries · Limited investigation · Final report · Apr 19, 1984 · N56BA · Substantial damage
  > The helicopter entered an uncontrolled right roll while lifting off from a trailer & struck the ground with the m/r. the plt reported the trailer was not level.
- [NTSB LAX84LA194](https://openairdocs.org/ntsb/LAX84LA194.md): Bell 47-G4A · Dixon, CA · Accident · No injuries · Limited investigation · Final report · Feb 24, 1984 · N9017N · Destroyed
  > The acft crashed during a forced landing after the engine quit. The plt stated that, 'three minutes into the crop dusting mission the engine quit and he suspected fuel mismanagement.'
- [NTSB LAX84FA130](https://openairdocs.org/ntsb/LAX84FA130.md): Bell 47J-2 · Kahuku, HI · Accident · 1 fatal · Field investigation · Final report · Jan 1, 1984 · N2097 · Destroyed
  > About 3 min after takeoff, the helicopter was observed descending in a 'gliding fashion' until water impact. A witness reported that it appeared to be flying straight & did not appear to be in trouble. The witness reported that she could hear the eng & it…

## 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") = 1984
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41534', '41582'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41534&year=1984

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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.