Washington Dulles Airport
Aircraft Accident/Incident Report

Dulles, Virginia 20166
Sunday, January 20, 2002 7:15 EST

NTSB Narrative Summary Released at Completion of Accident

The DC-9-32 was parked at the gate, with an inoperative APU, and the ramp was covered with snow and ice. The captain reported that a single engine cross bleed start would require an N1 of about 80% on the operative engine. He therefore elected to start both engines at the gate, and then proceed with the pushback. The operators manual stated that if a headset was used, it would be worn by the tug driver. The tug driver did not wear the headset because the headset chord had been broken and repaired multiple times, and was too short to reach the tug driver. A walker near the nose of the airplane was wearing the headset. During pushback, as the tug driver tried to push the nose of the airplane to the west, the airplane encountered icy conditions, moved forward, and struck the tug. At the time of loss of traction, the tug was nearly 90 degrees to the right side of the nose of the airplane. The forward movement of the airplane was observed by the tug driver, who stopped the tug, but with no headset, he could not notify the cockpit crew. The walker near the nose of the airplane, wearing the headset, reported that he was looking away, and did not observe the airplane moving forward in time to make a call to the cockpit. The pushback was accomplished by a contract crew that had been trained in accordance with the airlines GMM, which did not contain specific direction for pushbacks on icy surfaces.

NTSB Probable Cause Narrative

The lack of direction from the operator on how to perform pushbacks on an icy ramp, which led to the tug driver positioning the tug at an angle to the nose of the airplane that allowed the airplane to move forward and strike the tug. Factors were the inadequate visual lookout by the walker wearing the headset, and the icy ramp.

Event Information

Type of Event Accident
Event Date 1/20/2002
Event Day of the Week Sunday
Time of Event 715
Event Time Zone Eastern Standard Time
Event City Dulles
Event State VIRGINIA
Event Country --
Zipcode of the event site 20166
Event Date Year 2002
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? Yes
Event Location Latitude 385700N
Event Location Longitude 0772648W
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 0
Degrees magnetic from airport 0
Airport Elevation 313
Weather Briefing Completeness Full
Investigator's weather source Weather Observation Facility
Time of the weather observation 651 Eastern Standard 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 EST
Lighting Conditions Dusk
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) -1
Dew Point at event time (in degress fahrenheit) -5
Wind Direction (degrees magnetic) 360
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 8
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.11
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None 66
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 13001
NTSB Notification Source AirTran/FAA
NTSB Notification Date Jan 28 2002 12:00AM
NTSB Notification Time 1000
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 17 2003 10:27AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Dulles, Virginia

Aircraft Involved

Aircraft #1

Aircraft Registration Number N837AT
NTSB Number NYC02LA056
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name McDonnell Douglas
Aircraft Model DC-9-32
Aircraft Series Identifier --
Aircraft Serial Number 45774
Certified Max Gross Weight 109000
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 106
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Mar 1 2000 12:00AM
Airframe hours since last inspection --
Airframe Hours 67712
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Air Trans Airways
Aircraft Owner Street Address 9955 Air Trans blvd
Aircraft Owner City Orlando
Aircraft Owner State FL
Aircraft Owner Country USA
Aircraft Owner Zipcode 32824
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 ZZDA
Owner has at least one certificate --
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 Scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Passenger Only
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code --
Departure City Dulles
Departure State VA
Departure Country USA
Departure Time 715
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code ATL
Destination City Atlanta
Destination State GA
Destination Country USA
Specific Phase of Flight Taxi - pushback/tow
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Jan 27 2003 3:40PM
User who most recently changed record PEAR
Since inspection or accident Time of Accident
Event Location Runway Number and Location --
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --