Denver International Airport
Aircraft Accident/Incident Report

Denver, Colorado 80249
Wednesday, October 1, 1997 4:36 MDT

NTSB Narrative Summary Released at Completion of Accident

As the cargo jet was taxiing for takeoff in a nonmovement area, it was struck by an airport employee shuttle bus. The airplane captain was seriously injured. Visual meteorological conditions prevailed, and the collision occurred during predawn hours. The bus driver said he stopped at the stop sign, turned on the 4-way flasher lights, and looked both ways. He saw one inbound aircraft to the right that had stopped. He did not see the airplane approaching from the left as he started across the cargo ramp. The airplane crew stated they did not see the bus until seconds before impact. Airplane skid marks, measuring 22 and 24 feet in length, were noted on the taxiway. No bus skid marks were noted on the roadway.

NTSB Probable Cause Narrative

Failure of the bus driver to yield the right of way to oncoming traffic due to his inadequate visual lookout. Factors were visibility restrictions, inadequate driver training by management, and the flight crew's inadequate visual lookout due to their attention being diverted by performing the pretakeoff checklist.

Event Information

Type of Event Accident
Event Date 10/1/1997
Event Day of the Week Wednesday
Time of Event 436
Event Time Zone Mountain Daylight Time
Event City DENVER
Event State COLORADO
Event Country --
Zipcode of the event site 80249
Event Date Year 1997
Event Date Month 10
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Nearest Airport ID DEN
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 5431
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 453 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID DEN
Elevation of weather observation facility 5431
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation MDT
Lighting Conditions Night/Dark
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
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) 12
Dew Point at event time (in degress fahrenheit) 4
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Unknown
Wind Speed (knots) 6
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 6042
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 1
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None 1
Injury Total Serious 1
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 1196
NTSB Notification Source --
NTSB Notification Date Oct 1 1997 12:00AM
NTSB Notification Time 510
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 12:36PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N414EX
NTSB Number FTW98FA001
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 Boeing
Aircraft Model 727-51C
Aircraft Series Identifier 727-51C
Aircraft Serial Number 18899
Certified Max Gross Weight 170000
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 5
Number of Engines 3
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Sep 30 1997 12:00AM
Airframe hours since last inspection 14
Airframe Hours 47098
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Street Address 3350 W. BAYSHORE RD.
Aircraft Owner City PALO ALTO
Aircraft Owner State CA
Aircraft Owner Country --
Aircraft Owner Zipcode 94303
Operator is an individual? No
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 6810 W. KELLOGG
Operator City WICHITA
Operator State KS
Operator Country --
Operator Zip code 67209
Operator Code RYNA
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 Non-scheduled
Indicates Domestic or International Flight Domestic
Operator carrying Pax/Cargo/Mail Cargo
Type of Flying (Per_Bus / Primary) --
Second Pilot on Board Yes
Departure Point Same as Event Yes
Departure Airport Code DEN
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code SFO
Destination City SAN FRANCISCO
Destination State CA
Destination Country
Specific Phase of Flight Taxi
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Mar 17 2004 2:22PM
User who most recently changed record NTSB\HAMG
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 --