# NTSB SEA86LA105: Bell 47G3B1, N9417A, Albany, OR, April 15, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 15, 1986, 09:00 local (17:00 UTC)
- Place: Albany, OR
- Coordinates: 44.820526, -122.369316 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=44.8205&lon=-122.3693&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40388
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA105
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40388/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA105

## 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,line - leak (cause)
  - precautionary landing - attempted, pilot in command (contributing factor)
- Hard landing, landing - flare/touchdown
  - proper descent rate - not possible, pilot in command (cause)

## Analysis

THE PLT REPORTED THAT AFTER APRX 15 MINUTES OF FLT, THE ENG SPUTTERED 2 OR 3 TIMES. AN AUTOROTATION WAS PERFORMED ONTO ROUGH TERRAIN DURING WHICH THE TAIL ROTOR DRIVE SHAFT WAS DAMAGED BY THE MAIN ROTOR BLADES. POST ACCIDENT INSPECTION REVEALED A HOLE IN THE FUEL LINE TO THE FILTER.

## Aircraft

- Registration: [N9417A](https://openairdocs.org/deregistered/N9417A-2013-05-22), registration cancelled 2013-05-22, S/N 3808, built 1968 (OpenAirDocs)
- Reported make and model: BELL 47G3B1
- Registry model: [Bell 47G-3B-1](https://openairdocs.org/model/bell-47g-3b-1) (registry code 1181028) (OpenAirDocs)
- Registry engine: [Lycoming TVO-435-GIA](https://openairdocs.org/engine/lycoming-tvo-435-gia) (registry code 41526, turbo-prop) (OpenAirDocs)
- Category: Helicopter
- Serial number: 3808
- Airframe hours: 7928
- Engines: LYCOMING TVO-435-B2A 270 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Pilot Personnel Internation
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, February 1, 1986, 19 hours before
- Departed: S30, LEBANON, OR
- Destination: SLE, SALEM, OR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 375 total, 56 in this make and model, 283 as pilot in command, 40 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: variable at 5 knots, gusting 10
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 52 °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 19860415012039A](https://openairdocs.org/incident/19860415012039A), Apr 15, 1986: Bell 47G3B1, Albany, OR, Substantial damage. Let rotor rpms decay after engine power loss. Made a hard landing. The fireproof boot wore a hole in the fuel line.

## Other investigations on N9417A (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 SEA86LA182](https://openairdocs.org/ntsb/SEA86LA182), Jul 29, 1986: Bell 47G3B1 (N9417A), Albany, OR, substantial damage
- [NTSB SEA85LA174](https://openairdocs.org/ntsb/SEA85LA174), Jul 19, 1985: Bell 47G-3B-1 (N9417A), Lebanon, OR, 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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