Aircraft Accident/Incident Report

South Kingstown, Rhode Island 02879
Sunday, September 3, 2000 13:46 EDT

NTSB Narrative Summary Released at Completion of Accident

The airplane was headed southwest, level at 8,000 feet, either in, or above instrument meteorological conditions. The pilot was instructed to change radio frequency, and after he checked in with the next sector controller, no further transmissions were heard from him. The airplane descended to 7,400 feet, then climbed to 8,500 feet over a period of 4 minutes. It remained at 8,500 feet for about a minute, then descended to and maintained between 8,100 and 8,200 feet for another minute. The airplane then made a descending turn to the right, with rates of descent up to approximately 16,000 feet per minute. The wreckage path was 1,900 feet in length, and began with parts from the airplane's tail section. About 500 feet from the beginning, was a section of the right wing, and 400 feet beyond that, the entire left wing. The stabilator spar and left wing separations exhibited downwards bending. The airplane was equipped with a vacuum-driven attitude indicator (AI) and directional gyro (DG). It also had a standby vacuum system, which required a reduction of power to properly operate. One low-vacuum annunciator light exhibited filament characteristics consistent with its being lit at the time of the accident. The other light was a diode-type, and could only be/was tested as operational. Post-accident examination found that the vacuum pump flex coupling was sheared, and the vacuum-driven instruments did not exhibit any rotational scoring. The vacuum pump coupling was manufactured in 1979. The manufacturer recommended changing the coupling every 6 years. There was no regulatory requirement to change the coupling, nor was there any regulatory requirement for redundant systems in case of vacuum system failure.

NTSB Probable Cause Narrative

The pilot's loss of control, and his subsequent overstress of the airplane after a vacuum system failure during flight in instrument meteorological conditions. Factors included the instrument meteorological conditions, a sheared coupling on the vacuum pump, the pilot/owner's failure to ensure the coupling was changed per the manufacturer's recommendations, a lack of regulatory requirement to ensure compliance with the manufacturer's recommendations, and a lack of regulatory requirement to ensure installation of a suitable backup system.

Event Information

Type of Event Accident
Event Date 9/3/2000
Event Day of the Week Sunday
Time of Event 1346
Event Time Zone Eastern Daylight Time
Event City SOUTH KINGSTOWN
Event State RHODE ISLAND
Event Country --
Zipcode of the event site 02879
Event Date Year 2000
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 412615N
Event Location Longitude 0713231W
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 Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1345 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 50
Weather Observation Facility ID OQU
Elevation of weather observation facility 19
Distance of event from weather observation facility (units?) 10
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 500
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2
Air Temperature at event time (in degrees celsius) 23
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.95
Density Altitude (feet) --
Intensity of Precipitation Light
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) 11341
NTSB Notification Source FAA New England Com Ctr
NTSB Notification Date Sep 3 2000 12:00AM
NTSB Notification Time 1600
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jan 23 2002 7:13AM
User who most recently changed record NTSB\MONR
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8230G
NTSB Number NYC00FA248
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed IFR
Flight plan Was Activated? Yes
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-32R-301
Aircraft Series Identifier PA-32R-301
Aircraft Serial Number 32R-8013102
Certified Max Gross Weight 3600
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 7
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Dec 7 1999 12:00AM
Airframe hours since last inspection --
Airframe Hours 1458
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name SAMUEL M. PALLEY
Aircraft Owner Street Address --
Aircraft Owner City HUNTINGDON VLY
Aircraft Owner State PA
Aircraft Owner Country --
Aircraft Owner Zipcode 19006
Operator is an individual? No
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? --
Certified for Part 133 or 137 Operation --
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 CQX
Departure City CHATHAM
Departure State MA
Departure Country --
Departure Time 1305
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code PNE
Destination City PHILADELPHIA
Destination State PA
Destination Country --
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred No
Date of most recent change to record Jan 2 2002 2:11PM
User who most recently changed record PEAR
Since inspection or accident Last Inspection
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --