Logan International Airport
Aircraft Accident/Incident Report

Boston, Massachusetts 02128
Tuesady, February 6, 2001 12:00 EST

NTSB Narrative Summary Released at Completion of Accident

During engine start, while being pushed back, both engines went to a high power setting. The airplane pushed forward against the tow bar, sheared a pin, bent the tow bar, and struck the tug. Before engine start, maintenance personnel had conducted an automated check which included automatic movements of the control wheel and throttles. The flight crew returned to their seats while the test was being conducted. At the completion of the test, the airplane was returned to service and maintenance personnel departed the cockpit. The captain initiated the BEFORE STARTING ENGINES checklist without either pilot first completing a cockpit flow setup as required by company procedures. The checklist was then interrupted by a cockpit visitor and a non-pertinent conversation took place for 3 1/2 minutes. When the checklist was resumed, several items had been missed. As the checklist was continued, the call out THRUST LEVERS was made by the first officer, and the correct response of CLOSED was given by the captain. Push back was initiated, and the captain verbalized starting the first engine as required by the checklist. As the first engine was being started, the captain initiated another non-pertinent conversation with the first officer. The second engine was then started without verbalization as required by company checklist procedures. Although company checklist procedures made both pilots responsible for ensuring a normal start, neither pilot detected that the engines were accelerating above normal idle. According to follow-up testing, the engines accelerated to a power setting that corresponded to the last position of the throttles at the completion of the automated test by maintenance.

NTSB Probable Cause Narrative

the failure of the flight crew to follow the checklist prior to engine start, and their subsequent diverted attention during engine start.

Event Information

Type of Event Accident
Event Date 2/6/2001
Event Day of the Week Tuesday
Time of Event 1200
Event Time Zone Eastern Standard Time
Event City Boston
Event State MASSACHUSETTS
Event Country --
Zipcode of the event site 02128
Event Date Year 2001
Event Date Month 2
MidAir Collision Indicator No
On Ground Collision occurred ? Yes
Event Location Latitude 422206N
Event Location Longitude 0710054W
Event Location Airport Logan International
Event Location Nearest Airport ID BOS
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 --
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1154 Eastern Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID BOS
Elevation of weather observation facility 20
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation EST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 4500
Sky/Lowest/Cloud Conditions Scattered
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) 4
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 15
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.74
Density Altitude (feet) -1112
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 30
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 10563
NTSB Notification Source FAA New England Comm Center
NTSB Notification Date Feb 6 2001 12:00AM
NTSB Notification Time 1530
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Sep 26 2001 10:21AM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Boston, Massachusetts

Aircraft Involved

Aircraft #1

Aircraft Registration Number N1457B
NTSB Number NYC01LA077
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 Fokker
Aircraft Model F28 MK 0100
Aircraft Series Identifier --
Aircraft Serial Number 11469
Certified Max Gross Weight 98000
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 94
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Sep 9 2000 12:00AM
Airframe hours since last inspection 864
Airframe Hours 18871
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name American Airlines, Inc.
Aircraft Owner Street Address P.O. Box 619616, MD 5661
Aircraft Owner City DFW Airport
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 75261
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 AALA
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/Cargo
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code BOS
Departure City Boston
Departure State MA
Departure Country USA
Departure Time 1200
Departure Time Zone EST
Destination Same as Local Flt --
Destination Airport Code DCA
Destination City Washington
Destination State DC
Destination Country USA
Specific Phase of Flight Standing - starting engine(s)
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Sep 4 2001 12:31PM
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 --