# NTSB investigations: Lycoming VO-540 series, 1986

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 FTW86LA167](https://openairdocs.org/ntsb/FTW86LA167.md): Hiller UH-12E · Norias, TX · Accident · No injuries · Limited investigation · Final report · Sep 13, 1986 · N40268 · Substantial damage
  > The commercial plt was engaged in a livestock round-up and attempted to hover over a wire fence. The acft skid caught on the fence causing a loss of acft control and subsequent impact with the terrain.
- [NTSB LAX86FVM08](https://openairdocs.org/ntsb/LAX86FVM08.md): Hiller UH 12E · Gonzales, CA · Accident · No injuries · Final report · Sep 7, 1986 · N149HA · Substantial damage
  > A loss of power was expereinced as the acft descended into a field at the beginning of an aerial application spray run. The plt initiated a forced landing into the field. During the landing the right skid dug into the field, tipping the helicopter onto its…
- [NTSB FTW86FRD24](https://openairdocs.org/ntsb/FTW86FRD24.md): Texas Helicopter OH-13E/M74 · Port Allen, LA · Accident · No injuries · Final report · Sep 3, 1986 · N38092 · Substantial damage
  > The helicopter experienced partial power loss and descended to ground. It spray booms became entangled in the soy beans. The helicopter started to nose over, then rolled onto its right side and came to rest. Reason for the partial power loss is undetermined.
- [NTSB NYC86LA227](https://openairdocs.org/ntsb/NYC86LA227.md): Bell 47J-2A · Newburyport, MA · Accident · No injuries · Limited investigation · Final report · Aug 22, 1986 · N255PH · Substantial damage
  > The plt experienced a total power loss of the acft eng while practicing autorotations. The helicopter landed hard, the main rotor flexed and severed the tail boom. Post accident inspection of the helicopter revealed the fuel selector was positioned on the…
- [NTSB LAX86FVM06](https://openairdocs.org/ntsb/LAX86FVM06.md): Hiller UH21E · Salinas, CA · Accident · No injuries · Final report · Aug 12, 1986 · N169HA · Substantial damage
  > The plt experienced a 'ratcheting' to the right and a decrease in rotor RPM during cruise flt at 75-100 ft AGL. The plt made an autorotation but could not cushion the landing due to the low alt and lack of rotor RPM. The helicopter impacted hard and…
- [NTSB LAX86DVA13](https://openairdocs.org/ntsb/LAX86DVA13.md): Bell 47G-4A · Shafter, CA · Accident · No injuries · Final report · Aug 8, 1986 · N1185W · Substantial damage
  > Shortly after departing the loading rig, en route to an agricultural aerial application operation, the forward coupling tail rotor drive shaft failed. The helicopter was about 10 ft above ground level and about 100 ft west of the loading rig. The pilot…
- [NTSB LAX86DVA09](https://openairdocs.org/ntsb/LAX86DVA09.md): Hiller UH-12E · Delano, CA · Accident · No injuries · Final report · Jun 17, 1986 · N172ET · Substantial damage
  > The helicopter rotor blade delaminated shortly after departing the operator's north base at Delano, CA. The investigation determined the blade contained extensive voids on the bond line. The blade was rejected by the manufacturer as being unairworthy. The…
- [NTSB LAX86FVM05](https://openairdocs.org/ntsb/LAX86FVM05.md): Hiller UH12E · Castroville, CA · Accident · Minor injuries · Final report · Apr 27, 1986 · N5374V · Destroyed
  > The acft landed hard and rolled over after the lndg skid failed in a forced lndg. The plt said he was crusing at 500 ft AGL over an open field when he heard a loud bang. The helicopter began to vibrate severely and spiral to the right. The plt lost ground…
- [NTSB LAX86LA113](https://openairdocs.org/ntsb/LAX86LA113.md): Hiller UH-12E · Lodi, CA · Accident · No injuries · Limited investigation · Final report · Feb 7, 1986 · N62421 · Substantial damage
  > While on an aerial agricultural spraying flight the acft engine lost total power. The plt executed an immediate autorotation landing. Upon ground contact, the acft skid for about 8 ft until the front skid contacted the ground furrow and nosed over causing the…

## 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") = 1986
  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=1986

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