# NTSB LAX86LA193: Fairchild Hiller FH-1100, N5067F, Keaau, HI, April 27, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 26, 1986, 16:19 local (Apr 27, 1986, 02:19 UTC)
- Place: Keaau, HI
- Coordinates: 19.610794, -155.040664 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=19.6108&lon=-155.0407&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 25136
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX86LA193
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25136/pdf
- Page: https://openairdocs.org/ntsb/LAX86LA193

## Sequence of events

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

- Fire, cruise
  - engine assembly - overtemperature (cause)
  - fire extinguishing equipment - not possible, production/design personnel (contributing factor)
- Loss of engine power, descent - emergency
  - engine assembly - fire (cause)
- Forced landing, descent - emergency
  - engine assembly - failure,total (contributing factor)
- Fire, landing
  - fire extinguisher,portable - exhaustion (contributing factor)

## Analysis

A HILLER 1100 WAS DESTROYED BY FIRE AFTER A FORCED LANDING. THE PLT INDICATED THAT THE EGT HAD RISEN TO APPROXIMATELY 800 DEG C FROM 700 DEG AND THEN ROSE TO 1100 DEG. THE HEAT WARNING LIGHT ILLUMINATED. THE PLT INITIATED A PRECAUTIONARY LANDING. THE ENG FAILED IN THE DESCENT AND A AUTOROTATIVE LANDING WAS ACCOMPLISHED WITHOUT INCIDENT. THE ACFT WAS DESTROYED WHEN THE FIRE COULD NOT BE EXTINGUISHED. DURING THE ENG TEARDOWN, IT WAS OBSERVED THAT THE 1ST STAGE TURBINE WHEEL HAD EXTENSIVE BLADE TIP DAMAGE DUE TO EXCESSIVE TEMP. IT WAS NOTED ROTATING WHEELS AND STATIONARY NOZZLES WERE BADLY DAMAGED BY EITHER HEAT OR FOREIGN OBJECT DAMAGE (FOD) OR BOTH EXCEPT FOR THE #1 NOZZLE WHICH WAS IN GOOD CONDITION. THE VARIOUS COMPONENTS APPEARED TO HAVE BEEN ASSEMBLED PROPERLY EXCEPT FOR THE #6 ENG BEARING SEAL, WHICH WAS MISSING. IT COULD NOT BE DETERMINED IF THE ROPE TYPE SEAL WAS BURNT AWAY WITH THE EXCESSIVE TEMP OR IF IT WAS LEFT OUT OF THE ASSY.

## Aircraft

- Registration: [N5067F](https://openairdocs.org/deregistered/N5067F-1988-07-15), registration cancelled 1988-07-15, S/N 207 (OpenAirDocs)
- Reported make and model: FAIRCHILD HILLER FH-1100
- Registry model: [Fairchild Hiller FH-1100](https://openairdocs.org/model/fairchild-hiller-fh-1100) (registry code 3376502) (OpenAirDocs)
- Category: Helicopter
- Serial number: 207
- Airframe hours: 5004
- Engines: ALLISON 250-C18 274 horsepower turbo shaft
- Damage: Destroyed
- Fire: Both
- Flight: Positioning, Part 91
- Operator: Hilo Bay Air, Inc.
- Registered owner: General Lyman Field
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, March 26, 1986, 2 hours before
- Departed: ITO, HILO, HI
- Flight plan: Company VFR
- Airport: ITO, General Lyman Field

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; commercial, airline transport; airplane ratings: single-engine land, multi-engine sea, single-engine sea, multi-engine land; instrument ratings: helicopter, airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 24,985 total, 1,205 in this make and model, 23,305 as pilot in command, 50 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 9 knots
- Visibility: 15 statute miles
- Lowest ceiling: 4,500 ft broken
- Temperature: 81 °F, dew point 63 °F
- Altimeter: 30.00 inHg
- Observed at: ITO, 7 nm away

## 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 19860426014019A](https://openairdocs.org/incident/19860426014019A), Apr 26, 1986: Hiller 1100, Hilo, HI, Destroyed. High engine temp and failure during autorotation. Had engine fire that destroyed helicopter and evidence of problem

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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