General Mitchell Intl Apt Airport
Aircraft Accident/Incident Report

Milwaukee, Wisconsin 53201
Monday, January 31, 2000 16:45 CST

NTSB Narrative Summary Released at Completion of Accident

During passenger boarding the flight crew was advised of smoke coming from the passenger lavatory. The flight crew instructed the flight attendants to evacuate the aircraft. All passengers and crew members exited normally. Inspection of the aircraft following the incident revealed that wiring internal to the water heater was discolored and melted adjacent to a terminal within the unit. The wire exhibited evidence of chaffing in the area next to the terminal screw. Additionally, it was found that the water heater installation was missing a grounding strap. The Federal Aviation Administration Inspector in conjunction with Midwest Express personnel determined that the missing grounding strap prevented the circuit breaker for the water heater from tripping. Subsequent to the incident, Midwest Express Airlines has inspected their DC9 aircraft to insure that the ground strap is present.

NTSB Probable Cause Narrative

the chafing of the internal water heater wire. A factor was the missing ground strap.

Event Information

Type of Event Incident
Event Date 1/31/2000
Event Day of the Week Monday
Time of Event 1645
Event Time Zone Central Standard Time
Event City MILWAUKEE
Event State WISCONSIN
Event Country --
Zipcode of the event site 53201
Event Date Year 2000
Event Date Month 1
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude --
Event Location Longitude --
Event Location Airport GENERAL MITCHELL INTL APT
Event Location Nearest Airport ID MKE
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 --
Weather Briefing Completeness Not pertinent
Investigator's weather source Unknown
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Not Reported
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Unknown
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 0
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 91
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 5017
NTSB Notification Source --
NTSB Notification Date Feb 2 2000 12:00AM
NTSB Notification Time 1100
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Jul 2 2001 3:18PM
User who most recently changed record MONR
Basic weather conditions Unknown
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N203ME
NTSB Number CHI00IA087
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 121: Air Carrier
Type of Flight Plan filed Unknown
Flight plan Was Activated? --
Damage Minor
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name McDonnell Douglas
Aircraft Model DC9-32
Aircraft Series Identifier DC9-32
Aircraft Serial Number 47673
Certified Max Gross Weight 110000
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 91
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Continuous Airworthiness
Date of Last Inspection Dec 14 1999 12:00AM
Airframe hours since last inspection 77
Airframe Hours 60977
ELT Installed Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MIDWEST EXPRESS AIRLINES
Aircraft Owner Street Address 6744 S. HOWELL AVE
Aircraft Owner City OAK CREEK
Aircraft Owner State WI
Aircraft Owner Country
Aircraft Owner Zipcode 53154
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 MWEA
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 MKE
Departure City
Departure State
Departure Country
Departure Time 0
Departure Time Zone
Destination Same as Local Flt dest & departure same, accident can occur anywhere
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 Dec 20 2002 12:42PM
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 --