New Bedford Airport
Aircraft Accident/Incident Report

Mattapoisett, Massachusetts 02739
Friday, November 20, 1998 12:20 EST

NTSB Narrative Summary Released at Completion of Accident

The airplane was level at 2,000 feet, in instrument meteorological conditions, when the pilot reported 'we've just lost our ahh artificial horizon.' About 5 minutes later, air traffic control lost radar contact, and communications with the airplane. A witness about 1 mile north of the accident site stated he heard the sound of engine noise coming from the water and he described the sound as loud and constant. The sound lasted for about 30 seconds and was followed by an 'explosive collision/impact sound.' He further stated he walked to the shore and attempted to locate the source of the sound, but 'because of the fog, I couldn't see anything at all.' The airplane was located in about 25 feet of water, and was scattered over a 150 to 200 foot area. The recovered wreckage consisted of both engines, parts of the airplane's left wing, empennage, fuselage, seats, and interior. The airplane's attitude indicator was not recovered. A faint needle impression was found on the face of the airplane's vertical speed indicator between minus 2,500 and 3,000 feet per minute. Examination of the left and right vacuum pumps did not reveal any malfunctions or failures.

NTSB Probable Cause Narrative

The pilot's failure to maintain control of the airplane after an undetermined failure of the airplane's attitude indicator. A factor in this accident was fog.

Event Information

Type of Event Accident
Event Date 11/20/1998
Event Day of the Week Friday
Time of Event 1220
Event Time Zone Eastern Standard Time
Event City MATTAPOISETT
Event State MASSACHUSETTS
Event Country --
Zipcode of the event site 02739
Event Date Year 1998
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport NEW BEDFORD
Event Location Nearest Airport ID EWB
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 9
Degrees magnetic from airport 135
Airport Elevation 80
Weather Briefing Completeness Partial - limited by pilot
Investigator's weather source Weather Observation Facility
Time of the weather observation 1228 Eastern Standard Time
Direction of event from weather observation facility (degrees) 270
Weather Observation Facility ID FMH
Elevation of weather observation facility 132
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height 400
Lowest Non-Ceiling Height 200
Sky/Lowest/Cloud Conditions Scattered
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 13
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 220
Variable Wind Indicator Unknown
Wind Speed (knots) 12
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 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 1763
NTSB Notification Source --
NTSB Notification Date Nov 20 1998 12:00AM
NTSB Notification Time 1503
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:53AM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6820J
NTSB Number NYC99FA026
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Cessna
Aircraft Model 414A
Aircraft Series Identifier 414A
Aircraft Serial Number 414A0671
Certified Max Gross Weight 7000
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 8
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 9 1998 12:00AM
Airframe hours since last inspection 20
Airframe Hours 2675
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name GEMCO
Aircraft Owner Street Address 753 DAVOL STREET
Aircraft Owner City FALL RIVER
Aircraft Owner State MA
Aircraft Owner Country
Aircraft Owner Zipcode 02720
Operator is an individual? --
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? 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 No
Departure Point Same as Event No
Departure Airport Code HYA
Departure City HYANNIS
Departure State MA
Departure Country
Departure Time 1207
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code EWB
Destination City NEW BEDFORD
Destination State MA
Destination Country
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
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 --