Washington-Dulles Airport
Aircraft Accident/Incident Report

Washington, District Of Columbia 20041
Monday, August 1, 1994 17:45 EDT

NTSB Narrative Summary Released at Completion of Accident

THE COMMUTER AIRPLANE WAS PARKED AT THE GATE WITH 50 SEATED PASSENGERS, AND A CREW OF THREE. THE ENGINES WERE STOPPED, THE CHOCKS WERE IN PLACE, THE PILOTS WERE SEATED IN THE COCKPIT COMPLETING PAPER WORK, AND THE AIRSTAIR DOOR WAS OPEN. A BAGGAGE TRACTOR (DH4) HAD BROKEN DOWN, AND THE OPERATOR ASKED ANOTHER BAGGAGE TRACTOR OPERATOR (DH65), TO PUSH HIM TO THE END OF THE RAMP TO AWAIT SERVICE. DH65 BEGAN PUSHING DH4, WHICH STEERED TO PASS 15 TO 20 FEET TO THE LEFT OF THE AIRPLANE. AS DH4 ENTERED THE SERVICE ROAD, IT BEGAN TO TURN RIGHT TO HEAD WEST. AT THIS POINT, DH65 HAD NOT YET ENTERED THE SERVICE ROAD AND CONTINUED SOUTHWESTERLY FOR AN ADDITIONAL FEW FEET. AT THIS TIME, THE LEFT SIDE OF DH65'S FRONT HITCH, CONTACTED THE RIGHT SIDE OF DH4'S REAR HITCH. THE HITCH CONTACT JERKED THE FRONT OF DH65 TO THE RIGHT WHICH CAUSED THE DRIVER TO BE PITCHED HALFWAY OFF THE LEFT SIDE OF DH65. AS THE DRIVER FELL, HIS HAND PULLED DOWN ON THE STEERING WHEEL AND HIS FOOT PRESSED DOWN ON THE ACCELERATOR PEDAL. DH65 THEN VEERED INTO THE NOSE OF THE AIRPLANE.

NTSB Probable Cause Narrative

THE VEHICLE OPERATOR'S IMPROPER HANDLING OF THE BAGGAGE TRACTOR RESULTING IN LOSS OF CONTROL OF A SECOND BAGGAGE TRACTOR BEING PUSHED AND ITS SUBSEQUENT COLLISION WITH THE AIRPLANE.

Event Information

Type of Event Accident
Event Date 8/1/1994
Event Day of the Week Monday
Time of Event 1745
Event Time Zone Eastern Daylight Time
Event City WASHINGTON
Event State DISTRICT OF COLUMBIA
Event Country --
Zipcode of the event site 20041
Event Date Year 1994
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport WASHINGTON-DULLES
Event Location Nearest Airport ID IAD
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles --
Degrees magnetic from airport --
Airport Elevation 313
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1652 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID IAD
Elevation of weather observation facility 313
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 2700
Lowest Non-Ceiling Height 0
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) 10
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) 23
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Unknown
Wind Speed (knots) 3
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 Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 1
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 1
Injury Total None 53
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 605
NTSB Notification Source --
NTSB Notification Date Aug 2 1994 12:00AM
NTSB Notification Time 1215
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 12:02PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N433AW
NTSB Number NYC94LA144
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name de Havilland
Aircraft Model DHC-8-311
Aircraft Series Identifier DHC-8-311
Aircraft Serial Number 305
Certified Max Gross Weight 41000
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 53
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Jul 18 1994 12:00AM
Airframe hours since last inspection 122
Airframe Hours 6283
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AIR WISCONSIN INC.
Aircraft Owner Street Address 203 CHALLENGER DRIVE
Aircraft Owner City APPLETON
Aircraft Owner State WI
Aircraft Owner Country
Aircraft Owner Zipcode 54915
Operator is an individual? --
Operator Name ATLANTIC COAST AIRLINES
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 1 EXPORT DRIVE
Operator City STERLING
Operator State VA
Operator Country
Operator Zip code 20164
Operator Code VTZA
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 Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) Unknown
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Standing
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:30AM
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 --