# NTSB FTW84LA282: Bell 47G-5A, N14807, Houma, LA, June 21, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: June 21, 1984, 16:15 local (21:15 UTC)
- Place: Houma, LA
- Location: 29.5786° N, 90.7079° W: Placed by OpenAirDocs: center of Houma, LA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.5786&lon=-90.7079&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21377
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW84LA282
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21377/pdf
- Page: https://openairdocs.org/ntsb/FTW84LA282

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, cruise - normal
  - fuel system,fuel control - failure,partial (cause)
- Forced landing, landing - flare/touchdown
  - object - tree(s) (contributing factor)
  - autorotation - performed, pilot in command (contributing factor)
  - terrain condition - none suitable (contributing factor)
  - terrain condition - soft (contributing factor)

## Analysis

THE HELICOPTER AUTOROTATED INTO TREES AND MARSH LAND AFTER A PARTIAL LOSS OF POWER. THE ACFT WAS ON A PIPELINE PATROL ATLOW ALT AT THE TIME OF THE POWER LOSS. EXAMINATION OF THE ENGINE AFTER THE ACCIDENT REVEALED THAT THE FUEL CONTROL GOVERNOR SPRING, P/N 2529242, HAD BROKEN DRIVING THE FUEL CONTROL TO IDLE.

## Aircraft

- Registration: [N14807](https://openairdocs.org/aircraft/N14807), registered now, S/N 25078, built 1972 (OpenAirDocs)
- Reported make and model: Bell 47G-5A
- Registry model: [Bell 47G-5A](https://openairdocs.org/model/bell-47g-5a) (registry code 1181034) (OpenAirDocs)
- Registry engine: [Allison 250 series](https://openairdocs.org/engine/allison-250-series) (registry code 03014, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Serial number: 2505A
- Airframe hours: 6323
- Engines: ALLISON 250-C20B 274 horsepower turbo shaft
- Damage: Substantial damage
- Flight: Aerial observation, Part 91
- Registered owner: Industrial Helicopters Inc.
- Airworthiness certificate: Standard, Utility
- Departed: HOUMA, LA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 13,600 total, 4,550 in this make and model, 13,600 as pilot in command, 194 in the last 90 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 7 knots
- Lowest ceiling: 4,000 ft broken
- Temperature: 88 °F, dew point -0 °F
- Altimeter: 30.00 inHg
- Observed at: HUM, 2 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 19840621029389A](https://openairdocs.org/incident/19840621029389A), Jun 21, 1984: Bell 47G5A, Houma, LA, Substantial damage. Crash occurred during emergency landing after power failure because fuel control governor spring had broken.

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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