Aircraft Accident/Incident Report

Lacey Township, New Jersey 08754
Tuesady, October 10, 1989 13:29 EDT

NTSB Narrative Summary Released at Completion of Accident

AS THE HELICOPTER WAS IN CRUISE FLT AT AN ALT OF 2200' MSL, A PORTION OF ONE OF THE MAIN ROTOR BLADES SEPARATED. THE SUBSEQUENT IMBALANCE RESULTED IN SEPARATION OF THE TRANSMISSION & MAIN ROTOR ASSEMBLY FROM THE HELICOPTER. THE HELICOPTER THEN CRASHED IN AN UNCONTROLLED DESCENT. A METALLURGICAL EXAM OF THE SEPARATED BLADE REVEALED THAT IT HAD FAILED FROM FATIGUE. THE FRACTURE HAD INITIATED AT A MANUFACTURING INDUCED SCRATCH IN THE SPAR OF THE BLADE. THE SCRATCH WAS ON THE INNER SURFACE OF THE SPAR AT BLADE STATION 2825 (IN MILLIMETERS), NEAR THE LEAD BALANCE WT. IT WAS IN LINE WITH THE EDGE OF THE ADHESIVE FILET. THERE WAS EVIDENCE THAT THE CRACK ORIGINATED WHERE A SHARP TOOL WAS USED TO TRIM THE EDGE OF THE ADHESIVE FILET. THE BLADE FRACTURED AFTER 922 HRS OF OPERATION.

NTSB Probable Cause Narrative

IN-FLIGHT SEPARATION OF A MAIN ROTOR BLADE DUE TO FATIGUE FAILURE OF THE MAIN ROTOR BLADE SPAR, WHICH ORIGINATED AT A MANUFACTURING INDUCED SCRATCH (TOOL MARK) THAT WAS THE RESULT OF INADEQUATE QUALITY CONTROL.

Event Information

Type of Event Accident
Event Date 10/10/1989
Event Day of the Week Tuesday
Time of Event 1329
Event Time Zone Eastern Daylight Time
Event City LACEY TOWNSHIP
Event State NEW JERSEY
Event Country --
Zipcode of the event site 08754
Event Date Year 1989
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1355 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 330
Weather Observation Facility ID WRI
Elevation of weather observation facility 65
Distance of event from weather observation facility (units?) 22
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 4000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 16
Dew Point at event time (in degress fahrenheit) 3
Wind Direction (degrees magnetic) 190
Variable Wind Indicator Unknown
Wind Speed (knots) 8
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal 5
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 5
Investigating Agency NTSB
NTSB Docket Number (internal use) 2272
NTSB Notification Source --
NTSB Notification Date Oct 10 1989 12:00AM
NTSB Notification Time 1400
Fiche Number and/or location -used to find docket information 42177
Date of most recent change to record Dec 13 2000 1:09PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N21FL
NTSB Number NYC90MA009
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 135: Air Taxi & Commuter
Type of Flight Plan filed Company VFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name AGUSTA
Aircraft Model A109A MKII
Aircraft Series Identifier A109A MKII
Aircraft Serial Number 7309
Certified Max Gross Weight 5730
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 7
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Sep 3 1989 12:00AM
Airframe hours since last inspection 47
Airframe Hours 911
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name FSQ AIR CHARTER CORP.
Aircraft Owner Street Address 410 EAST 62ND ST.
Aircraft Owner City NEW YORK CITY
Aircraft Owner State NY
Aircraft Owner Country
Aircraft Owner Zipcode 10021
Operator is an individual? --
Operator Name PARAMOUNT AVIATION
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 425 BEAVER BROOK RD.
Operator City LINCOLN PARK
Operator State NJ
Operator Country
Operator Zip code 07035
Operator Code DAGA
Owner has at least one certificate Yes - certificate holder
Other Operator of large aircraft? No
Certified for Part 133 or 137 Operation Unknown
Operator Certificate Number --
Indicates whether an air carrier operation was scheduled or not Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger/Cargo
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code 6N4
Departure City NEW YORK CITY
Departure State NY
Departure Country
Departure Time 1302
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code ACY
Destination City ATLANTIC CITY
Destination State NJ
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --