Individually Owned: 150,657
Corporate Owned: 137,281
General Mitchell Field Airport
Aircraft Accident/Incident Report
Milwaukee, Wisconsin 53204
Friday, September 6, 1985 15:21 CDT
NTSB Narrative Summary Released at Completion of Accident
The Safety Board's full report on this investigation is provided as Aviation Accident Report number AAR-87/01. To obtain a copy of this report, or to view the executive summary online, please see the Web site at http://www.ntsb.gov/publictn/publictn.htm
DRG TAKEOFF, THE ACFT (MIDWEST EXPRESS FLT 105) WAS CLIMBING THRU ABOUT 450' AGL WHEN THERE WAS A LOUD NOISE AS THE RGT ENG FAILED. SHORTLY THEREAFTER, THE ACFT ENTERED A STEEP DSCNT & CRASHED IN AN APRX 90 DEG, RGT WING LOW, ATTITUDE. AN INV REVEALED THAT THE 9TH TO 10TH STAGE, HI PRESSURE COMPRESSOR SPACER IN THE RGT ENG HAD FAILED. THERE WAS EVIDENCE THEFAILURE WAS PRECIPITATED BY A FATIGUE CRACK IN 1 OF THE 2 KNIFE EDGES ON THE SPACER. INITIALLY, CORRECT (LEFT) RUDDER RESPONSE WAS USED TO COMPENSATE FOR THE LOSS OF POWER IN THE RGT ENG, BUT ABOUT 4 TO 5 SEC LATER, RGT RUDDER DEFLECTION OCCURRED. APRX 10 SEC AFTER THE RGT ENG FAILED, THE ACFT STALLED & WENT OUT OF CONTROL. ALSO, ABOUT 1.5 SEC AFTER THE INITIAL RGT ENG FAILURE, THERE WAS A REDUCTION IN THE LEFT ENG'S RPM, & SUBSEQUENTLY, THE ENG COMPRESSOR STALLED AFTER THE ACFT WENT OUT OF CONTROL & WAS DSCNDG IN AN UNUSUAL ATTITUDE. HOWEVER, THE REDUCTION OF POWER IN THE LEFT ENG WAS NOT CONSIDERED SIGNIFICANT TO THE LOSS OF CONTROL. NEITHER PLT VERBALLY IDENTIFIED THE EMERG CONDITION DRG THE SEQUENCE.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 9/6/1985 |
| Event Day of the Week | Friday |
| Time of Event | 1521 |
| Event Time Zone | Central Daylight Time |
| Event City | MILWAUKEE |
| Event State | WISCONSIN |
| Event Country | -- |
| Zipcode of the event site | 53204 |
| Event Date Year | 1985 |
| Event Date Month | 9 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | GENERAL MITCHELL FIELD |
| Event Location Nearest Airport ID | MKE |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | 200 |
| Airport Elevation | 704 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1540 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | MKE |
| Elevation of weather observation facility | 693 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| 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) | 32 |
| Dew Point at event time (in degress fahrenheit) | 24 |
| Wind Direction (degrees magnetic) | 210 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 16 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 3200 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 31 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 31 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1147 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Sep 8 1985 12:00AM |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 28310 |
| Date of most recent change to record | Jan 2 2001 9:15AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N100ME |
| NTSB Number | DCA85AA036 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | Ground |
| Aircraft Manufacturer's Full Name | DOUGLAS |
| Aircraft Model | DC-9-14 |
| Aircraft Series Identifier | DC-9-14 |
| Aircraft Serial Number | 47309 |
| Certified Max Gross Weight | 91500 |
| 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 | 116 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Sep 4 1985 12:00AM |
| Airframe hours since last inspection | 18 |
| Airframe Hours | 31892 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | MIDWEST EXPRESS AIRLINES,INC. |
| Aircraft Owner Street Address | OUTAGAMIE COUNTY AIRPORT |
| Aircraft Owner City | APPLETON |
| Aircraft Owner State | WI |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 54915 |
| 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 | 1521 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ATL |
| Destination City | ATLANTA |
| Destination State | GA |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| 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 | 19R |
| Runway Length | 9690 |
| Runway Width | 200 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |