Individually Owned: 150,657
Corporate Owned: 137,281
Milwaukee Mitchell Airport
Aircraft Accident/Incident Report
Milwaukee, Wisconsin 53207
Friday, April 20, 1990 16:00 CDT
NTSB Narrative Summary Released at Completion of Accident
THE PILOT ENGAGED THE AUTOPILOT APPROACH MODE TO EXECUTE A COUPLED ILS APPROACH WHILE HE WAS HIGH AND FAST WITH A 2000 FOOT PER MINUTE RATE OF DESCENT. THIS WAS OUTSIDE THE PARAMETERS FOR A STABILIZED APPROACH. WHEN THE AUTOPILOT CAPTURED THE GLIDE SLOPE, THE AIRCRAFT NOSED OVER SHARPLY, FLEW THROUGH THE GLIDE SLOPE, PULLED UP SHARPLY, FLEW THROUGH THE GLIDE SLOPE GOING UP, AND NOSED OVER AGAIN BEFORE THE PILOT COULD DISENGAGE THE AUTOPILOT. PILOT LANDED THE AIRCRAFT WITHOUT FURTHER INCIDENT, BUT THE PITCH EXCURSIONS HAD EXCEEDED THE STRESS LIMITS OF THE AIRCRAFT.
NTSB Probable Cause Narrative
THE UTILIZATION OF IMPROPER PROCEDURES ON THE PART OF THE PILOT IN COMMAND BY ATTEMPTING TO EXECUTE A COUPLED APPROACH OUTSIDE THE PARAMETERS OF THE AUTOPILOT.
Event Information
| Type of Event | Accident |
| Event Date | 4/20/1990 |
| Event Day of the Week | Friday |
| Time of Event | 1600 |
| Event Time Zone | Central Daylight Time |
| Event City | MILWAUKEE |
| Event State | WISCONSIN |
| Event Country | -- |
| Zipcode of the event site | 53207 |
| Event Date Year | 1990 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | MILWAUKEE MITCHELL |
| 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 | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1551 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 190 |
| Weather Observation Facility ID | MKE |
| Elevation of weather observation facility | 723 |
| Distance of event from weather observation facility (units?) | 4 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 1000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 5 |
| Air Temperature at event time (in degrees celsius) | 15 |
| Dew Point at event time (in degress fahrenheit) | 12 |
| Wind Direction (degrees magnetic) | 300 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 0 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 3 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1234 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 20 1990 12:00AM |
| NTSB Notification Time | 1945 |
| Fiche Number and/or location -used to find docket information | 42596 |
| Date of most recent change to record | Dec 12 2000 4:53PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N179DD |
| NTSB Number | CHI90LA115 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Beech |
| Aircraft Model | F33A |
| Aircraft Series Identifier | F33A |
| Aircraft Serial Number | CE743 |
| Certified Max Gross Weight | 3400 |
| 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 | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jun 1 1989 12:00AM |
| Airframe hours since last inspection | 275 |
| Airframe Hours | 3886 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | DELTA DELTA PARTNERSHIP |
| Aircraft Owner Street Address | 2707 SOUTHGATE DR. |
| Aircraft Owner City | FARGO |
| Aircraft Owner State | ND |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 58103 |
| Operator is an individual? | -- |
| Operator Name | DELTA DELTA PARTNERSHIP |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 2707 SOUTHGATE DR. |
| Operator City | FARGO |
| Operator State | ND |
| Operator Country | |
| Operator Zip code | 58103 |
| Operator Code | |
| Owner has at least one certificate | None |
| 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 | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Business |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | FAR |
| Departure City | FARGO |
| Departure State | ND |
| Departure Country | |
| Departure Time | 1310 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Approach |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:35AM |
| 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 | -- |