# NTSB LAX88LA095: Hughes 369D, N8366F, Rialto, CA, January 24, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 24, 1988, 15:10 local (23:10 UTC)
- Place: Rialto, CA
- Location: 34.1174° N, 117.3892° W: Placed by OpenAirDocs: center of Rialto, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=34.1174&lon=-117.3892&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 7, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 25941
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX88LA095
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25941/pdf
- Page: https://openairdocs.org/ntsb/LAX88LA095

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of control - in flight, descent
  - procedures/directives - not followed, pilot in command(cfi) (cause)
  - weather condition - high wind (contributing factor)
  - weather condition - gusts (contributing factor)
  - compensation for wind conditions - improper, pilot in command(cfi) (cause)
- In flight collision with terrain/water, landing - flare/touchdown
  - autorotation - misjudged, pilot in command(cfi) (cause)
  - terrain condition - dirt bank/rising embankment (contributing factor)

## Aircraft

- Registration: [N8366F](https://openairdocs.org/aircraft/N8366F), registered now, S/N 270082D (OpenAirDocs)
- Reported make and model: HUGHES 369D
- Registry model: [Hughes Helicopters HUGHES 369D](https://openairdocs.org/model/hughes-helicopters-hughes-369d) (registry code 4470706) (OpenAirDocs)
- Category: Helicopter
- Serial number: 0082D
- Airframe hours: 4910
- Engines: ALLISON 250-C20B 420 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Western Helicopters, Inc.
- Registered owner: Michael Zicka Leasing Company
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, September 10, 1987, 71 hours before
- Airport: L67, Rialto

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: right; flight hours: 8,000 total, 3,000 in this make and model, 39 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 355° at 25 knots, gusting 42
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 70 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19880124001239A](https://openairdocs.org/incident/19880124001239A), Jan 24, 1988: Hughes 369D, Rialto, CA, Substantial damage. Practice autorotation with turn resulted in landing shor t and rollover. CFI allowed RPM decay and a turn too low.

## Other investigations on N8366F (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA03LA021](https://openairdocs.org/ntsb/SEA03LA021), Dec 24, 2002: Hughes 369D (N8366F), Boise, ID, substantial damage. Probable cause: The failure of the operator's maintenance personnel to properly rig the left/right seat twistgrip throttles to the engine fuel control, the pilot in command's failure to adhere to the rotorcraft…
- [NTSB ANC81FA082](https://openairdocs.org/ntsb/ANC81FA082), Jul 21, 1981: Hughes 369D (N8366F), Umiat, AK, substantial damage

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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