O'hare International Airport
Aircraft Accident/Incident Report

Chicago, Illinois 60666
Sunday, April 19, 1998 20:30 CST

NTSB Narrative Summary Released at Completion of Accident

The cockpit crew was in the process of starting the Auxiliary Power Unit (APU) when passengers saw flames coming from the right engine. A passenger was heard to scream 'Fire' at which time the uncommanded evacuation was initiated by the passengers. The captain attempted to calm the passengers with a PA announcement. Passengers exited the airplane via the over wing exit, the rear airstair door, and the main entry door onto the jet bridge. A ten year old boy received a broken arm and two other passengers received minor leg and ankle injuries as they jumped off the wing.

NTSB Probable Cause Narrative

the passenger initiated evacuation of the airplane. A factor was the auxiliary power unit fire.

Event Information

Type of Event Accident
Event Date 4/19/1998
Event Day of the Week Sunday
Time of Event 2030
Event Time Zone Central Standard Time
Event City CHICAGO
Event State ILLINOIS
Event Country --
Zipcode of the event site 60666
Event Date Year 1998
Event Date Month 4
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport O'HARE INTERNATIONAL
Event Location Nearest Airport ID ORD
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 668
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 2056 Central Standard Time
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID ORD
Elevation of weather observation facility 668
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation CST
Lighting Conditions Dusk
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) 13
Dew Point at event time (in degress fahrenheit) -2
Wind Direction (degrees magnetic) 50
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 Serious
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor 2
Injury Total None 153
Injury Total Serious 1
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 666
NTSB Notification Source --
NTSB Notification Date Apr 19 1998 12:00AM
NTSB Notification Time 2105
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 11 2000 11:06AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N722AA
NTSB Number CHI98LA127
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed IFR
Flight plan Was Activated? --
Damage Minor
Aircraft Fire Ground
Aircraft Explosion None
Aircraft Manufacturer's Full Name Boeing
Aircraft Model 727-227
Aircraft Series Identifier 727-227
Aircraft Serial Number 20730
Certified Max Gross Weight 142000
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 160
Number of Engines 3
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Apr 18 1998 12:00AM
Airframe hours since last inspection --
Airframe Hours 3326
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name AMERICAN AIRLINES, INC.
Aircraft Owner Street Address P.O. BOX 61616
Aircraft Owner City DFW AIRPORT
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 75261
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 AALA
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 ORD
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt --
Destination Airport Code MKC
Destination City KANSAS CITY
Destination State KS
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 --