Theodore Francis Green St Airport
Aircraft Accident/Incident Report

Seekonk, Massachusetts 02771
Sunday, November 14, 1993 EST

NTSB Narrative Summary Released at Completion of Accident

DURING A FOUR HOUR IFR CROSS COUNTRY FLIGHT, IN CRUISE, THE ENGINE'S DRY AIR VACUUM PUMP FAILED. THE PILOT ELECTED TO CONTINUE TO HIS FINAL DESTINATION, ABOUT 180 MILES AWAY, NAVIGATING BY HIS LORAN. THE PILOT WAS NOTIFIED BY AIR TRAFFIC CONTROL PERSONNEL THAT IN ORDER TO CONTINUE TO HIS DESTINATION, IMC COULD NOT BE AVOIDED. THE PILOT STATED THAT IMC WAS NOT A PROBLEM AND HE CONTINUED THE FLIGHT. DURING A NO GYRO VECTOR APPROACH TO THE LOCALIZER IN IMC, AT AN ALTITUDE OF ABOUT 1,900 FEET MSL, THE PILOT BECAME SPATIALLY DISORIENTED AND LOST CONTROL OF THE AIRPLANE. THE AIRPLANE IMPACTED THE TERRAIN AND THE PILOT AND PASSENGER WERE FATALLY INJURED. THE DRY AIR VACUUM PUMP WAS EXAMINED. THE EXAMINATION REVEALED THAT THE INPUT SHAFT OF THE PUMP WAS FACTURED PRIOR TO IMPACT.

NTSB Probable Cause Narrative

THE PILOT'S INADEQUATE IN FLIGHT PLANNING/DECISION TO CONTINUE FLIGHT INTO KNOWN ADVERSE WEATHER CONDITIONS AFTER THE ENGINE'S DRY AIR VACUUM PUMP FAILED AND THE PILOT'S FAILURE TO MAINTAIN AIRPLANE CONTROL DURING APPROACH. A FACTOR IN THE ACCIDENT WAS THE DRY AIR VACUUM PUMP FAILURE.

Event Information

Type of Event Accident
Event Date 11/14/1993
Event Day of the Week Sunday
Time of Event 26
Event Time Zone Eastern Standard Time
Event City SEEKONK
Event State MASSACHUSETTS
Event Country --
Zipcode of the event site 02771
Event Date Year 1993
Event Date Month 11
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport THEODORE FRANCIS GREEN ST
Event Location Nearest Airport ID PVD
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 11
Degrees magnetic from airport 50
Airport Elevation 55
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 27 Eastern Standard Time
Direction of event from weather observation facility (degrees) 240
Weather Observation Facility ID PVD
Elevation of weather observation facility 55
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation EST
Lighting Conditions Night/Dark
Lowest Ceiling Height 1400
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
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) 13
Dew Point at event time (in degress fahrenheit) 11
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 12
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
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 2
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 1934
NTSB Notification Source --
NTSB Notification Date Nov 14 1993 12:00AM
NTSB Notification Time 300
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 1:45PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4224H
NTSB Number BFO94FA008
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 Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name MOONEY
Aircraft Model MO-20J
Aircraft Series Identifier MO-20J
Aircraft Serial Number 24-0669
Certified Max Gross Weight 2740
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 4
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jan 1 1993 12:00AM
Airframe hours since last inspection 41
Airframe Hours 3005
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name SHERMAN, LEE ALLEN
Aircraft Owner Street Address 191 DUXBURY
Aircraft Owner City WARWICK
Aircraft Owner State RI
Aircraft Owner Country
Aircraft Owner Zipcode 02886
Operator is an individual? --
Operator Name SHERMAN, LEE A.
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 191 DUXBURY COURT
Operator City WEST WARWICK
Operator State RI
Operator Country
Operator Zip code 02886
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) Business
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code PTK
Departure City OAKLAND PONTIAC
Departure State MI
Departure Country
Departure Time 2058
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code PVD
Destination City PROVIDENCE
Destination State RI
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 23L
Runway Length 7166
Runway Width 200
Sight Seeing flight No
Air Medical Flight No
Medical Flight --