Private Airport
Aircraft Accident/Incident Report

Miami, Florida 33168
Monday, February 11, 2002 17:06 EST

NTSB Narrative Summary Released at Completion of Accident

A Hiller UH-12E collided with the ground during a forced landing. According to the pilot, while executing aerial applications at 15 to 20 feet AGL, he heard a bang and the helicopter began shaking and yawing. The pilot realized he was losing altitude and attempted to slow the descent by using the collective. The helicopter impacted the ground, and caught fire. The pilot exited the helicopter through a hole in the bubble. Examination of the main rotor hub pieces revealed that the fracture at the hub had progressed through the inboard pin hole for the torsion/tension plate set. Six fracture faces were noted in the examination corresponding with the pin hole. Two fracture faces showed discoloration with a distinctive banding pattern and smoothly curved crack arrest marks consistent with fatigue propagation. Examination of the remaining two fractures revealed no evidence of fatigue cracking, but did show some corrosion on the exposed portion of the pin.

NTSB Probable Cause Narrative

Fatigue cracking in the main rotor hub that resulted in the separation of the main rotor system. A factor was corrosive deposits on the exposed portion of the plate set pin.

Event Information

Type of Event Accident
Event Date 2/11/2002
Event Day of the Week Monday
Time of Event 1706
Event Time Zone Eastern Standard Time
Event City Miami
Event State FLORIDA
Event Country --
Zipcode of the event site 33168
Event Date Year 2002
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? Yes
Event Location Latitude 254735N
Event Location Longitude 0801725W
Event Location Airport private
Event Location Nearest Airport ID NONE
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 3
Degrees magnetic from airport 315
Airport Elevation 11
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1745 Eastern Standard Time
Direction of event from weather observation facility (degrees) 315
Weather Observation Facility ID TMB
Elevation of weather observation facility 10
Distance of event from weather observation facility (units?) 3
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height 90
Lowest Non-Ceiling Height 40
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 23
Dew Point at event time (in degress fahrenheit) 16
Wind Direction (degrees magnetic) 200
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.1
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 14396
NTSB Notification Source FAA
NTSB Notification Date Feb 11 2002 12:00AM
NTSB Notification Time 1755
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Nov 25 2003 11:36AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Miami FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N103HA
NTSB Number ATL02LA044
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 137: Agricultural
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Hiller
Aircraft Model UH12E
Aircraft Series Identifier --
Aircraft Serial Number HA3003
Certified Max Gross Weight 3100
Aircraft Category Helicopter
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 3
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Feb 2 2002 12:00AM
Airframe hours since last inspection 23
Airframe Hours 5481
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Marvin Scripter
Aircraft Owner Street Address 24340 Loblolley Bay Rd
Aircraft Owner City Labelle
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 33935
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 --
Other Operator of large aircraft? --
Certified for Part 133 or 137 Operation Agriculture
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) Aerial Application
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code --
Departure City Miami
Departure State FL
Departure Country USA
Departure Time 1700
Departure Time Zone EST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code --
Destination City --
Destination State --
Destination Country --
Specific Phase of Flight Maneuvering - aerial application
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jul 24 2003 11:32AM
User who most recently changed record POWP
Since inspection or accident --
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --