Aircraft Accident/Incident Report

Ft Pierce, Florida 34945
Monday, June 20, 2005 11:10 EDT

NTSB Narrative Summary Released at Completion of Accident

The flight departed Treasure Cay International Airport, Abaco Island, Bahamas en route to Ft. Pierce, Florida. The pilot contacted the Miami Air Route Traffic Control Center (ZMA) after departure from the Treasure Cay airport, and requested IFR clearance to Fort Pierce, Florida. The ZMA controller radar identified the airplane and issued clearance to Fort Pierce via direct Freeport, direct Fort Pierce, at 10,000 feet. The airplane traveled west along Grand Bahamas Island until reaching Freeport, and then turned northwest toward Fort Pierce. During interviews with air traffic controllers it was revealed that during the period that the airplane was on frequency broadcast SIGMET information relevant to the airplane's route of flight was transmitted. However both controllers stated that they observed precipitation return in the vicinity of the airplane's route, but they never advised the pilot of those observations. Radar data shows the airplane passing through an area of intense weather radar echoes containing thunderstorms with intense rain, up and downdrafts, at least moderate turbulence, horizontal wind gusts, and IMC conditions. The FAA order 7110.65, "Air Traffic Control," paragraph 2-6-4, "Weather and Chaf Services, " States: 2. Issue the level of echo intensity when that information is available.

NTSB Probable Cause Narrative

The pilot's continued flight into known thunderstorm activity that resulted in the loss of control and the subsequent collision with water. A factor was the controller's failure to provide the pilot with convective intensity.

Event Information

Type of Event Accident
Event Date 6/20/2005
Event Day of the Week Monday
Time of Event 1110
Event Time Zone Eastern Daylight Time
Event City Ft Pierce
Event State FLORIDA
Event Country --
Zipcode of the event site 34945
Event Date Year 2005
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 270300N
Event Location Longitude 0793500W
Event Location Airport --
Event Location Nearest Airport ID --
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1053 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID FPR
Elevation of weather observation facility 24
Distance of event from weather observation facility (units?) 60
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 7000
Sky/Lowest/Cloud Conditions Few
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 26
Dew Point at event time (in degress fahrenheit) 23
Wind Direction (degrees magnetic) 320
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.01
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 3
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 18883
NTSB Notification Source FAA Com Center
NTSB Notification Date Jun 20 2005 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jan 31 2006 7:35AM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Orlando FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6886Y
NTSB Number ATL05FAMS1
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-23
Aircraft Series Identifier --
Aircraft Serial Number 27-4236
Certified Max Gross Weight 5200
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 1 2005 12:00AM
Airframe hours since last inspection --
Airframe Hours 6766.2
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Joseph Arnold Helseth
Aircraft Owner Street Address 366 32nd Ave SW
Aircraft Owner City Vero Beach
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 32968
Operator is an individual? Yes
Operator Name --
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City --
Operator State --
Operator Country --
Operator Zip code --
Operator Code --
Owner has at least one certificate None
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation --
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code MYAT
Departure City Abaco Island
Departure State --
Departure Country BF
Departure Time --
Departure Time Zone --
Destination Same as Local Flt --
Destination Airport Code FPR
Destination City Ft. Pierce
Destination State FL
Destination Country USA
Specific Phase of Flight Cruise - normal
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Nov 7 2005 3:32PM
User who most recently changed record POWP
Since inspection or accident Last Inspection
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --