Aircraft Accident/Incident Report

Spartansburg, Pennsylvania 16434
Thursday, January 26, 1989 16:23 EST

NTSB Narrative Summary Released at Completion of Accident

AFTER RECEIVING A WEATHER BRIEFING FROM FSS THE PILOT DECIDED TO FLY INTO KNOWN ICING CONDITIONS WITH AN AIRCRAFT THAT WAS NEITHER CERTIFIED NOR EQUIPPED FOR FLIGHT INTO ICING CONDITIONS. THE AIRCRAFT WAS AT 6,100 FEET WHEN THE PILOT TOLD ATC THAT HE WAS PICKING UP ICE AND NEEDED A HIGHER ALTITUDE. HE WAS CLEARED TO 8,000 FEET. ACCORDING TO ATC RADAR DATA, THE AIRCRAFT REACHED 6,500 FEET, AND 12 SECONDS LATER IT WAS AT 3,500 FEET WHEN RADAR CONTACT WAS LOST. THE AIRCRAFT WAS SEEN IN A HIGH SPEED DIVE AT FULL POWER JUST PRIOR TO IMPACT WITH THE GROUND.

NTSB Probable Cause Narrative

THE PILOTS DECISION TO DISREGARD THE WEATHER FORECAST AND ATTEMPT FLIGHT INTO KNOWN ICING CONDITIONS. AFTER THE WINGS STARTED TO ICE UP, THE PILOT INITIATED A CLIMB BUT COULD NOT MAINTAIN AIRSPEED AND INADVERTANTLY STALLED THE AIRCRAFT WHICH ENTERED AN UNCONTROLLED HIGH SPEED DESCENT TO THE GROUND.

Event Information

Type of Event Accident
Event Date 1/26/1989
Event Day of the Week Thursday
Time of Event 1623
Event Time Zone Eastern Standard Time
Event City SPARTANSBURG
Event State PENNSYLVANIA
Event Country --
Zipcode of the event site 16434
Event Date Year 1989
Event Date Month 1
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 0
Degrees magnetic from airport 0
Airport Elevation 0
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2136 Coordinated Universal Time? Same as GMT
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID ERI
Elevation of weather observation facility 732
Distance of event from weather observation facility (units?) 25
Time Zone of the weather observation UTC
Lighting Conditions Day
Lowest Ceiling Height 1600
Lowest Non-Ceiling Height 1000
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) 2
Dew Point at event time (in degress fahrenheit) 2
Wind Direction (degrees magnetic) 230
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) 0
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 4
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 4
Investigating Agency NTSB
NTSB Docket Number (internal use) 315
NTSB Notification Source --
NTSB Notification Date Jan 26 1989 12:00AM
NTSB Notification Time 1645
Fiche Number and/or location -used to find docket information 38857
Date of most recent change to record Dec 13 2000 12:25PM
User who most recently changed record dbo
Basic weather conditions Instrument Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N115DS
NTSB Number NYC89FA073
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 GRUMMAN
Aircraft Model GA-7
Aircraft Series Identifier GA-7
Aircraft Serial Number GA-70115
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 4
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Jul 15 1988 12:00AM
Airframe hours since last inspection 98
Airframe Hours 1566
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name DAVID W SWEIGART
Aircraft Owner Street Address 189 RIDGE VIEW ROAD SOUTH
Aircraft Owner City ELIZABETHTOWN
Aircraft Owner State PA
Aircraft Owner Country
Aircraft Owner Zipcode 17022
Operator is an individual? --
Operator Name DAVID W. SWEIGART
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 189 RIDGEVIEW RD SOUTH
Operator City ELIZABETHTOWN
Operator State PA
Operator Country
Operator Zip code 17022
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 LNS
Departure City LANCASTER
Departure State PA
Departure Country
Departure Time 1440
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code MBS
Destination City SAGINAW
Destination State MI
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length 0
Runway Width 0
Sight Seeing flight No
Air Medical Flight No
Medical Flight --