Aircraft Accident/Incident Report

Fort Meade, Florida 33841
Thursday, September 14, 2006 19:53 EDT

NTSB Narrative Summary Released at Completion of Accident

The airplane was being used for mosquito control and was carrying Scourge insecticide (Bayer), a mixture of resmethrin, piperonyl butoxide, and naphtalene. A witness said the airplane passed overhead at low altitude. He heard the engines "throttle back, then rev up and sputter." He said he could tell the right engine was sputtering because "the propeller was turning slowly." He saw the airplane pitch up, roll to the right, and descend into the ground. The airplane immediately caught fire. The on-scene investigation revealed one blade on the left propeller assembly was curled aft and the other blade was curled forward. One blade on the right propeller assembly was curled aft and the other blade was straight. Both engines later were disassembled and inspected. Crankshaft rotation produced camshaft, valve, and accessory drive continuity on both engines. No anomalies were noted with either engine's lubrication, induction, fuel injector, exhaust, and ignition systems. Examination of the spark plugs and cylinders revealed normal burn patterns and color. All cylinders produced compression except the right engine's number 6 cylinder. According to the manufacturer, its intake and exhaust valve springs had lost tension as a result of having been exposed to the fire. Both the left and right propeller governor controls were in the high rpm position.

NTSB Probable Cause Narrative

A loss of power in the right engine while manuevering for reasons undetermined, and failure to maintain aircraft control which resulted in an inadvertent stall. Contributing factors were the airspeed below Vmc, and an altitude too low to afford a safe recovery..

Event Information

Type of Event Accident
Event Date 9/14/2006
Event Day of the Week Thursday
Time of Event 1953
Event Time Zone Eastern Daylight Time
Event City Fort Meade
Event State FLORIDA
Event Country --
Zipcode of the event site 33841
Event Date Year 2006
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 274430N
Event Location Longitude 0814645W
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 1950 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 322
Weather Observation Facility ID LAL
Elevation of weather observation facility 142
Distance of event from weather observation facility (units?) 26
Time Zone of the weather observation EDT
Lighting Conditions Dusk
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4000
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) 12
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) 22
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 5
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.9
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 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 21437
NTSB Notification Source FAA-Southern Region
NTSB Notification Date Sep 14 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record May 29 2007 12:24PM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Orlando, Florida

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5941Y
NTSB Number DEN06GA128
Missing Aircraft Indicator --
Federal Aviation Reg. Part Public Use
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-23-250
Aircraft Series Identifier --
Aircraft Serial Number 27-3107
Certified Max Gross Weight 4800
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 2
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed --
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Polk County Board of County Commissioners
Aircraft Owner Street Address 4177 Ben Durrance Rd.
Aircraft Owner City Bartow
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 33830
Operator is an individual? No
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) Public Use
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code BOW
Departure City Bartow
Departure State FL
Departure Country USA
Departure Time 1900
Departure Time Zone EDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code BOW
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 4 2007 11:49AM
User who most recently changed record BOWL
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --