# NTSB MIA84LA185: Lake 250, N1400X, Ket Largo, FL, June 14, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 14, 1984, 13:00 local (17:00 UTC)
- Place: Ket Largo, FL
- Coordinates: 25.079172, -80.439331 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=25.0792&lon=-80.4393&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31145
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA84LA185
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31145/pdf
- Page: https://openairdocs.org/ntsb/MIA84LA185

## Sequence of events

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

- Dragged wing,rotor,pod,float or tail/skid, landing - flare/touchdown
  - terrain condition - water,rough (contributing factor)
  - unsuitable terrain or takeoff/landing/taxi area - selected, pilot in command (cause)

## Analysis

AS THE PLT WAS APPROACHING TO LAND IN THE OPEN OCEAN NEAR KEY LARGO, FL, A BIG WAVE APPEARED. THE PLT PULLED THE NOSE OF THE ACFT UP & ADDED POWER. HOWEVER, THE ACFT IMPACTED THE WAVE CREST & WAS CATIPULTED UPWARD IN A NOSE HIGH ATTITUDE. IT THEN CAME DOWN ON THE LEFT WING WHICH SEPARATED FROM THE ACFT. THE ACFT SANK IN 12 FT OF WATER AFTER FLOATING ABOUT 35 MINUTES. THE PLT REPORTED THAT THE WIND SEEMED TO BE LIGHT & VARIABLE. HE ESTIMATED THAT THE WAVES WERE 1 TO 1-1/2 FT HIGH, EXCEPT FOR THE WAVE OR SWELL THAT THE ACFT HIT.

## Aircraft

- Registration: N1400X (not matched to a registry record)
- Reported make and model: LAKE 250
- Category: Airplane
- Serial number: 5
- Airframe hours: 120
- Engines: LYCOMING IO-540-C4B5 250 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Registered owner: Sam Boggess
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, June 8, 1984, 12 hours before
- Departed: APF, NAPLES, FL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; commercial; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 1,984 total, 94 in this make and model, 1,526 as pilot in command, 85 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 10 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 82 °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 19840614041179A](https://openairdocs.org/incident/19840614041179A), Jun 14, 1984: Conaer LA4250, Key Largo, FL, Destroyed. Aircraft hit a wave swell during flare for landing and pitched up to a nose high attitude causing stall and crash.

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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