Aircraft Accident/Incident Report

Somerville, New Jersey 08876
Wednesday, March 4, 1998 14:10 EST

NTSB Narrative Summary Released at Completion of Accident

"THIS CASE WAS MODIFIED AUGUST 2, 2006." The Piper Apache was cruising at about 1,500 feet AGL, when a witness saw the vertical stabilizer start to oscillate and then separate from the airplane. The airplane descended and struck a multiple family dwelling. Examination of the wreckage revealed the outboard wing panels had separated from the airplane in flight due to downward bending forces that occurred after the in-flight separation of the horizontal stabilizer. The horizontal stabilizer was found next to the vertical stabilizer apart from the main fuselage and wing wreckage and had separated, in-flight, in a horizontal twisting motion that pushed the left tip of the horizontal stabilizer rearward. An impact mark on the left outboard leading edge of the horizontal stabilizer was consistent with a soft bodied impact that occurred prior to ground impact. Although one witness reported seeing several birds flying in the area at the time of the accident, examination of the left horizontal stabilizer and elevator failed to find any evidence of blood, feathers, or bird remains. A detailed and comprehensive examination of the accident site area failed to reveal any evidence of a bird carcass, or bird feathers. Aircraft components composed of both aluminum and fiberglass were mounted forward of the empennage, however the impact mark showed no residual evidence of being struck by either material. A determination of the source of the soft bodied impact could not be made. The vertical stabilizer is attached to the horizontal stabilizer, and this assembly is then attached to the fuselage through four attach points. The damage to the vertical stabilizer attach points indicates that they failed toward the left (as viewed from the rear looking forward) and were securely attached to the horizontal stabilizer at the time of failure. Three of the four bolts that attach the horizontal stabilizer to the fuselage were recovered. The forward two attach points were torn out of the horizontal stabilizer during the in-flight separation. Compression damage to the lower skin immediately forward of the aft, left attach point indicates that it was securely attached. No evidence was found to indicate that any of the attach points were unsecured prior to the accident.

NTSB Probable Cause Narrative

in-flight separation of the empennage for undetermined reasons. "THIS CASE WAS MODIFIED AUGUST 2, 2006."

Event Information

Type of Event Accident
Event Date 3/4/1998
Event Day of the Week Wednesday
Time of Event 1410
Event Time Zone Eastern Standard Time
Event City SOMERVILLE
Event State NEW JERSEY
Event Country --
Zipcode of the event site 08876
Event Date Year 1998
Event Date Month 3
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1354 Eastern Standard Time
Direction of event from weather observation facility (degrees) 222
Weather Observation Facility ID TTN
Elevation of weather observation facility 213
Distance of event from weather observation facility (units?) 16
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height 5500
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) 10
Air Temperature at event time (in degrees celsius) 10
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 270
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) 29
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 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1345
NTSB Notification Source --
NTSB Notification Date Mar 4 1998 12:00AM
NTSB Notification Time 1455
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Aug 2 2006 1:25PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N3374P
NTSB Number NYC98FA073
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-23-160
Aircraft Series Identifier PA-23-160
Aircraft Serial Number 23-1334
Certified Max Gross Weight 3800
Aircraft Category Airplane
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 2
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 5 1997 12:00AM
Airframe hours since last inspection 95
Airframe Hours 4745
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name GIBSON AIR ACADEMY INC.
Aircraft Owner Street Address 221 CRANBERRY ROAD
Aircraft Owner City FARMINGDALE
Aircraft Owner State NJ
Aircraft Owner Country --
Aircraft Owner Zipcode 07727
Operator is an individual? --
Operator Name LINO FAZIO
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 421 DOCK STREET
Operator City UNION BEACH
Operator State NJ
Operator Country --
Operator Zip code 07735
Operator Code --
Owner has at least one certificate None
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 --
Indicates Domestic or International Flight --
Operator carrying Pax/Cargo/Mail --
Type of Flying (Per_Bus / Primary) Personal
Second Pilot on Board Yes
Departure Point Same as Event No
Departure Airport Code 4N1
Departure City WEST MILFORD
Departure State NJ
Departure Country --
Departure Time 1350
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code 2N8
Destination City MATAWAN
Destination State NJ
Destination Country --
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 2 2006 1:01PM
User who most recently changed record LEMA
Since inspection or accident --
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --