# NTSB DFW07CA196: Interplane Skyboy, N1682W, Atoka, OK, August 16, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: August 16, 2007, 08:00 local (13:00 UTC)
- Place: Atoka, OK
- Coordinates: 34.400001, -96.150001
- Nearby events: https://openairdocs.org/map.md?lat=34.4000&lon=-96.1500&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report March 31, 2008
- Report: Approved by Office Director
- Parties: Oklahoma City, Oklahoma
- NTSB case key (mKey): 66632
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DFW07CA196
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66632/pdf
- Page: https://openairdocs.org/ntsb/DFW07CA196

## Probable cause

The pilot's improper landing flare, resulting in a hard landing.

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - flare - improper, pilot in command (cause)
- In flight collision with terrain/water, landing
  - terrain condition - water (contributing factor)

## Analysis

The left float separated from the amphibian airplane during a water landing.  The non-seaplane rated private pilot was landing a float-equipped airplane on a lake, when the left float was torn from the aircraft.   According to the Federal Aviation Administration (FAA) Inspector, that responded to the accident site, witnesses observed that the airplane landed hard.  The airplane sustained structural damage and partially sank into the lake.  Additionally, the 250-hour pilot reported that there were no anomalies or malfunctions with the airplane prior to the mishap.  The pilot further stated that he "could have collided with an unknown object during the landing."

## Factual narrative

The left float separated from the amphibian airplane during a water landing.  The non-seaplane rated private pilot was landing a float-equipped airplane on a lake, when the left float was torn from the aircraft.   According to the Federal Aviation Administration (FAA) Inspector, that responded to the accident site, witnesses observed that the airplane landed hard.  The airplane sustained structural damage and partially sank into the lake.  Additionally, the 250-hours pilot reported that there were no anomalies or malfunctions with the airplane prior to the mishap.  The pilot further stated that he "could have collided with an unknown object during the landing."

## Aircraft

- Registration: [N1682W](https://openairdocs.org/aircraft/N1682W), registered now, S/N 1100088, built 2004 (OpenAirDocs)
- Reported make and model: Interplane Skyboy
- Registry model: [Interplane SKYBOY](https://openairdocs.org/model/interplane-skyboy) (registry code 059005A) (OpenAirDocs)
- Registry engine: [Rotax 912S series](https://openairdocs.org/engine/rotax-912s-series) (registry code 55570, 4 cycle) (OpenAirDocs)
- Category: Airplane
- Serial number: 110088
- Airframe hours: 145
- Engines: Rotax 912S reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Special, Special light-sport (Special)
- Departed: Atoka, OK
- Destination: Atoka, OK
- Airport: F80, Atoka Muni

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; flight hours: 250 total, 27 in this make and model

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point 73 °F
- Altimeter: 29.95 inHg

## 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 20070816018919A](https://openairdocs.org/incident/20070816018919A), Aug 16, 2007: Amtr SKYBOY, Atoka, OK, Substantial damage. (-23) While landing at the Atoka lake in Atoka, OK, the pilot landed hard on the left float according to witnesses. The left float sustained 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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