# NTSB FTW86FA004: Beech H18, N1461G, Oklahoma City, OK, November 5, 1985

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: November 5, 1985, 15:11 local (21:11 UTC)
- Place: Oklahoma City, OK
- Coordinates: 35.390293, -97.489265 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.3903&lon=-97.4893&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21870
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW86FA004
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21870/pdf
- Page: https://openairdocs.org/ntsb/FTW86FA004

## 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, takeoff - initial climb
  - fluid,oil - starvation
  - engine assembly - failure,total
  - maintenance - improper, other maintenance personnel (cause)
- Loss of control - in flight, takeoff - initial climb
  - directional control - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

ATR PLT DEPARTING ARPT UNDER VMC EXPERIENCED FAILURE OF THE RIGHT ENG SHORTLY AFTER LIFT-OFF. THE ACFT YAWED RIGHT FOLLOWED BY A STEEP RIGHT ROLL, CONTACTING POWER LINES WITH THE RIGHT WING AND SUBSEQUENTLY IMPACTED THE GROUND. A POST-CRASH FIRE DESTOYED THE ACFT WITH THE EXCEPTION OF BOTH ENGS AND A PORTION OF THE RIGHT WING PANEL. THE ENG FAILED DUE TO LACK OF LUBRICATION TO THE IMPELLER SHAFT CAUSED BY BLOCKAGE OF OIL JET DUE TO FOD. OIL LINE FROM SCAVENGE SUMP TO SCAVENGE PUMP INLET HAD BEEN REPLACED PRIOR TO ACCIDENT. THE ACFT HAD EXPERIENCED MAINTENANCE PROBLEM (OIL LEAK) APRX 2 WEEKS PRIOR TO ACCIDENT. SOURCE OF FOD IS UNDETERMINED.

## Aircraft

- Registration: [N1461G](https://openairdocs.org/deregistered/N1461G-2012-08-01), registration cancelled 2012-08-01, S/N BA-637, built 1963 (OpenAirDocs)
- Reported make and model: BEECH H18
- Registry model: [Beech H-18](https://openairdocs.org/model/beech-h-18) (registry code 1151012) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: BA637
- Airframe hours: 9660
- Engines: P&W R-985-AN-1 450 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Part 135
- Registered owner: Starflight Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 4, 1985, 6 hours before
- Departed: 2EJ
- Destination: FSI, LAWTON, OK
- Flight plan: IFR
- Airport: 2EJ, Expressway, runway 20, 3,000 × 70 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 51; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 16,000 total, 3,000 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 15 knots, gusting 20
- Visibility: 15 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 73 °F, dew point 43 °F
- Altimeter: 29.00 inHg
- Observed at: PWA, 9 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 19851105061379A](https://openairdocs.org/incident/19851105061379A), Nov 5, 1985: Beech H18, Oklahoma City, OK, Destroyed. Right engine turboshaft bearing seized on takeoff. Aircraft rolled striking powerlines. Burned on ground impact.

## Other investigations on N1461G (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 ATL83LA101](https://openairdocs.org/ntsb/ATL83LA101), Feb 11, 1983: Beech H18 (N1461G), Talladega, AL, 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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