Individually Owned: 150,657
Corporate Owned: 137,281
General Edward Lawrence Logan Airport
Aircraft Accident/Incident Report
Mattapan, Massachusetts 02126
Friday, August 24, 1990 6:33 EDT
NTSB Narrative Summary Released at Completion of Accident
THE PLT NOTED AN OVER TORQUE CONDITION IN THE LEFT ENG AS THE ACFT WAS ON AN ILS APCH. HE MADE A GO-AROUND & INITIATED ANOTHER APCH WITH THE ENG SHUT DOWN. HE WAS UNABLE TO MAINTAIN ALT & THE ACFT BEGAN A DECENT THAT WAS NOT ARRESTED. SUBSEQUENTLY, IT CRASHED INTO 2 HOMES, APRX 6 MI FROM THE ARPT. AN EXAM OF THE LEFT ENG REVEALED THE DRIVE SHAFT FROM THE FUEL PUMP TO THE FUEL CONTROL WAS SHEARED AT THE PLASTIC COUPLING. FURTHER EXAM REVEALED THE TWIN BEARINGS THAT SUPPORTED THE DRIVESHAFT HAD FAILED. ALSO, THERE WAS EVIDENCE THE DRIVE SHAFT HAD SHIFTED & SUBSEQUENTLY AN OVERTORQUE CONDITION RESULTED.
NTSB Probable Cause Narrative
THE PILOT'S IMPROPER IN-FLIGHT PLANNING/DECISION, WHICH RESULTED IN HIS FAILURE TO MAINTAIN CONTROL OF THE AIRCRAFT. FACTORS RELATED TO THE ACCIDENT WERE: FAILURE OF THE LEFT FUEL CONTROL UNIT, AND THE ADVERSE WEATHER CONDITIONS.
Event Information
| Type of Event | Accident |
| Event Date | 8/24/1990 |
| Event Day of the Week | Friday |
| Time of Event | 633 |
| Event Time Zone | Eastern Daylight Time |
| Event City | MATTAPAN |
| Event State | MASSACHUSETTS |
| Event Country | -- |
| Zipcode of the event site | 02126 |
| Event Date Year | 1990 |
| Event Date Month | 8 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | GENERAL EDWARD LAWRENCE LOGAN |
| Event Location Nearest Airport ID | BOS |
| 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 | 20 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 629 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 61 |
| Weather Observation Facility ID | BOS |
| Elevation of weather observation facility | 20 |
| Distance of event from weather observation facility (units?) | 6 |
| Time Zone of the weather observation | EDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 300 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Partial Obscuration |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 6000 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 0 |
| Air Temperature at event time (in degrees celsius) | 17 |
| Dew Point at event time (in degress fahrenheit) | 17 |
| Wind Direction (degrees magnetic) | 50 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 0 |
| 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 | 3 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2022 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Aug 24 1990 12:00AM |
| NTSB Notification Time | 700 |
| Fiche Number and/or location -used to find docket information | 43004 |
| Date of most recent change to record | Jul 15 2005 1:35PM |
| User who most recently changed record | NTSB\HAMG |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N85HB |
| NTSB Number | NYC90FA199 |
| 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 | Ground |
| Aircraft Manufacturer's Full Name | PIPER |
| Aircraft Model | PA-31T2 |
| Aircraft Series Identifier | PA-31T2 |
| Aircraft Serial Number | 31T-812021 |
| Certified Max Gross Weight | 9000 |
| 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 | Unknown |
| Date of Last Inspection | Jun 20 1990 12:00AM |
| Airframe hours since last inspection | 0 |
| Airframe Hours | -- |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | |
| Aircraft Owner Street Address | |
| Aircraft Owner City | |
| Aircraft Owner State | |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | |
| Operator is an individual? | -- |
| Operator Name | MICHAEL D. SPEAR |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 10386 GREEN MOUNTAIN CIR. |
| Operator City | COLUMBIA |
| Operator State | MD |
| Operator Country | |
| Operator Zip code | 21044 |
| 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 | OB6 |
| Departure City | CHATHAM |
| Departure State | MA |
| Departure Country | |
| Departure Time | 600 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Approach |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jul 15 2005 1:35PM |
| User who most recently changed record | NTSB\HAMG |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 4R |
| Runway Length | 10005 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |