# NTSB LAX84FA483: Bell 206B, N7111J, Long Beach, CA, September 17, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Field investigation · Final report
- Date: September 17, 1984, 15:50 local (22:50 UTC)
- Place: Long Beach, CA
- Coordinates: 33.8101, -118.180015 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.8101&lon=-118.1800&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 24002
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX84FA483
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/24002/pdf
- Page: https://openairdocs.org/ntsb/LAX84FA483

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, landing - flare/touchdown
  - turbine assembly,turbine wheel - fatigue (cause)
  - maintenance,compliance with ad - not performed, company maintenance personnel (cause)
  - turbine assembly,turbine wheel - overtemperature (contributing factor)
  - turbine assembly,turbine wheel - failure,total (cause)
- Hard landing, landing - flare/touchdown

## Analysis

THE ACFT EXPERIENCED A POWER LOSS DURING FLARE FOR LANDING. THE PLT PULLED COLLECTIVE TO SOFTEN THE TOUCHDOWN FROM 30 FTAGL BUT THE LANDING WAS HARD. POST ACCIDENT EXAMINATION OF THE ENGINE SHOWED A FAILURE OF THE #1 TURBINE DISC. LAB EXAM OF THE DISC SHOWED FAILURE FROM OVERHEATING AND FATIGUE. AN AD WAS IN EXISTANCE WITH THE PURPOSE OF PREVENTIG AFTER FIRES FROM INCOMPLETE FUEL CUT OFF DURING ENGINE SHUTDOWN BY ADJUSTING THE FUEL CONTROL QUADRANT TO READ MINUS 2 DEGREESWITH THE THROTTLE AGAINST THE MINIMUM STOP. INVESTIGATION SHOWED THE FUEL CONTROL QUADRANT ON THE ACCIDENT ACFT READ '0'DEGREES WITH THE THROTTLE LEVER AGAINST THE MINIMUM STOP.

## Aircraft

- Registration: [N7111J](https://openairdocs.org/deregistered/N7111J-2014-02-05), registration cancelled 2014-02-05, S/N 669 (OpenAirDocs)
- Reported make and model: BELL 206B
- Registry model: [Bell 206A](https://openairdocs.org/model/bell-206a) (registry code 1181508) (OpenAirDocs)
- Category: Helicopter
- Serial number: 669
- Airframe hours: 3451
- Engines: ALLISON 250C20 317 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Part 135
- Operator: Permian Aviation Inc
- Registered owner: Houston Helicopter, Inc
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 8, 1984, 59 hours before
- Departed: SAN PEDRO, CA
- Destination: LGB
- Airport: LGB, Long Beach

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; commercial; airplane ratings: single-engine land; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 7,975 total, 2,502 in this make and model, 7,800 as pilot in command, 140 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 13 knots
- Visibility: 14 statute miles
- Lowest ceiling: 15,000 ft broken
- Temperature: 90 °F, dew point 70 °F
- Altimeter: 29.00 inHg
- Observed at: LGB

## 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 19840917049459A](https://openairdocs.org/incident/19840917049459A), Sep 17, 1984: Bell 206A, Long Beach, CA, Substantial damage. Engine lost power during landing, hard landing caused tail rotor damage. Found number one turbine disc failed.

## Other investigations on N7111J (1)

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 FTW79DRA37](https://openairdocs.org/ntsb/FTW79DRA37), Aug 18, 1979: Bell 206B (N7111J), Houston, TX, 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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