Potomac Airpark Airport
Aircraft Accident/Incident Report

Hancock, Maryland 21750
Sunday, January 2, 1983 11:45 EST

NTSB Narrative Summary Released at Completion of Accident

THE AIRCRAFT COLLIDED WITH THE TOP TWO WIRES OF A POWERLINE DURING A LOW ALTITUDE SIGHT-SEEING FLIGHT ALONG THE POTOMAC RIVER. THE PILOT STATED HE WAS MAINTAINING VISUAL CONTACT WITH THE GROUND SHOULD AN EMERGENCY LANDING BECOME NECESSARY. HE WAS STAYING HIGH ENOUGH FOR CLEARANCE OF THE TREES. HE STATED THAT APPARENTLY THE TERRAIN WAS GETTING HIGHER WITHOUT HIS AWARENESS AND SUDDENLY THE WIRES BECAME VISIBLE JUST BEFORE THE COLLISION. ONE WIRE CONTACTED THE LANDING GEAR AND THE ACFT PITCHED DOWN OUT OF CONTROL AND CRASHED ON A ROCKY LEDGE ON AN ISLAND IN THE RIVER. THE FREE END OF ONE OF THE WIRES RECOILED ONTO HIGHWAY I-70 AND STRUCK TWO CARS CAUSING MINOR INJURIES TO 2 PERSONS.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 1/2/1983
Event Day of the Week Sunday
Time of Event 1145
Event Time Zone Eastern Standard Time
Event City HANCOCK
Event State MARYLAND
Event Country --
Zipcode of the event site 21750
Event Date Year 1983
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport POTOMAC AIRPARK
Event Location Nearest Airport ID W35
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 5
Degrees magnetic from airport 105
Airport Elevation --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1100 Eastern Standard Time
Direction of event from weather observation facility (degrees) 90
Weather Observation Facility ID HGR
Elevation of weather observation facility 704
Distance of event from weather observation facility (units?) 16
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height 12000
Lowest Non-Ceiling Height 12000
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 7
Air Temperature at event time (in degrees celsius) 3
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 130
Variable Wind Indicator Unknown
Wind Speed (knots) 5
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
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 2
On Ground, Serious Injuries 0
Injury Total Fatal 1
Injury Total Minor 2
Injury Total None --
Injury Total Serious 1
Injury Total All 4
Investigating Agency FAA
NTSB Docket Number (internal use) 146
NTSB Notification Source --
NTSB Notification Date --
NTSB Notification Time 0
Fiche Number and/or location -used to find docket information 20306
Date of most recent change to record Jan 2 2001 9:15AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8515U
NTSB Number ATL83FIG03
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name CESSNA
Aircraft Model 172F
Aircraft Series Identifier 172F
Aircraft Serial Number 172-52415
Certified Max Gross Weight 2200
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 Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 1 1982 12:00AM
Airframe hours since last inspection 30
Airframe Hours 2822
ELT Installed Yes
ELT Activated Yes
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name DAVID J. ALT, SR.
Aircraft Owner Street Address 1715 THE STRAND
Aircraft Owner City WESTMINSTER
Aircraft Owner State MD
Aircraft Owner Country
Aircraft Owner Zipcode 21157
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 Yes - certificate holder
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 W35
Departure City HANCOCK
Departure State MD
Departure Country
Departure Time 1142
Departure Time Zone EST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Maneuvering
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
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 --