# NTSB FTW85LA008: Lake LA-4-200, N6685L, Waurika, OK, October 7, 1984

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: October 7, 1984, 15:45 local (20:45 UTC)
- Place: Waurika, OK
- Coordinates: 34.18, -98.020126 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.1800&lon=-98.0201&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21600
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW85LA008
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21600/pdf
- Page: https://openairdocs.org/ntsb/FTW85LA008

## Sequence of events

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

- In flight collision with terrain/water, landing - flare/touchdown
  - flare - inadequate, pilot in command (cause)
  - airport facilities,runway/landing area condition - water,glassy
- Dragged wing,rotor,pod,float or tail/skid, landing
- Nose over, landing

## Analysis

ACCORDING TO WITNESSES, THE ACFT NOSE WAS TOO LOW AT WATER CONTACT ON LNDG TOUCHDOWN AND THE NOSE AND RIGHT PONTOON DUG INTO THE WATER. THE ACFT SWERVED ABRUPTLY TO THE RIGHT, FLIPPED INVERTED AND SANK. NO LOGS OR OTHER FLOATING DEBRIS WERE LOCATED DURING A POST MISHAP CHECK OF THE AREA.

## Aircraft

- Registration: [N6685L](https://openairdocs.org/deregistered/N6685L-2013-04-30), registration cancelled 2013-04-30, S/N 448, built 1970 (OpenAirDocs)
- Reported make and model: LAKE LA-4-200
- Registry model: [Lake LA-4-200](https://openairdocs.org/model/lake-la-4-200) (registry code 5110310) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 448
- Airframe hours: 1389
- Engines: LYCOMING IO-360 180 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Tom Wilkerson
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, November 11, 1983, 19 hours before
- Departed: OK08, LAWTON, OK
- Destination: WAURIKA LAKE, OK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; commercial; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 6,364 total, 176 in this make and model, 6,248 as pilot in command, 25 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 8 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 48 °F
- Altimeter: 30.00 inHg
- Observed at: FSI, 45 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 19841007075669A](https://openairdocs.org/incident/19841007075669A), Oct 7, 1984: Conaer LA4200, Waurika, OK, Substantial damage. Nose and right pontoon dug into water on touchdown, water looped, nosed over and sank.

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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