# NTSB investigations: Allison 250-C20 series, 1987

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 LAX88LA043](https://openairdocs.org/ntsb/LAX88LA043.md): Hughes 369D · Honolulu, HI · Accident · No injuries · Limited investigation · Final report · Nov 14, 1987 · N1113L · Substantial damage
  > The plt rprtd that during an external load operation, the helicopter ran out of fuel. Subsequently, it was damaged when it touched down hard during a forced landing.
- [NTSB LAX87LA310](https://openairdocs.org/ntsb/LAX87LA310.md): Bell 206B · Kailua-Kona, HI · Accident · Minor injuries · Limited investigation · Final report · Aug 23, 1987 · N2777R · Substantial damage
  > As the helicopter was climbing over rising terrain at 300' to 400' AGL, the plt noted altimeter & airspeed indcns of 8700' & 60 mph. After climbing an adnl 2 min to aprx 10,000' (12,000' density alt), he noticed the rotor RPM was bleeding off. He made a 180…
- [NTSB CHI87LA180](https://openairdocs.org/ntsb/CHI87LA180.md): Hughes 369HS · Griffith, IN · Accident · No injuries · Limited investigation · Final report · Jul 30, 1987 · N42405 · Substantial damage
  > The tail boom of the helicopter was severed after rotor blade contact during a hard landing. The acc occurred during an autorotation demo for the police dept with a power recovery. Application of power was late and the helicopter landed hard and bounced. The…
- [NTSB LAX87FA173](https://openairdocs.org/ntsb/LAX87FA173.md): Hughes 369E · Palm Desert, CA · Accident · Serious injuries · Field investigation · Final report · Apr 11, 1987 · N5200W · Substantial damage
  > The helicopter dscndd uncontrolled & crashed in a residential area. After the acdnt, the plt said he agreed to orbit the residence of his pax. At the aprx 135 deg point of a left orbit, he felt 'a bang & severe vibration in the tail.' The plt lost drctnl ctl…
- [NTSB LAX87LA157](https://openairdocs.org/ntsb/LAX87LA157.md): McDonnell Douglas 369E · Phoenix, AZ · Accident · No injuries · Limited investigation · Final report · Mar 19, 1987 · N1601Y · Substantial damage
  > During factory flt training, prior to delivery of the new helicopter to the owner, the CFI said he asked the student to perform a series of emergency procedures which included quick stops from an initial takeoff followed by hovering autorotations. The CFI…
- [NTSB NYC87LA058](https://openairdocs.org/ntsb/NYC87LA058.md): Agusta A109AII · So. Dartmouth, MA · Accident · Minor injuries · Limited investigation · Final report · Jan 13, 1987 · N300CC · Substantial damage
  > Agusta N300CC departed a helipad in front of claremont corp president's residence in south Dartmouth, Massachusetts. As the helicopter was hovering prior to moving forward, the tail rotor blade, s/n 124, failed. The tail rotor assembly and gearbox separated…

## 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") = 1987
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('03020'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=03020&year=1987

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