Individually Owned: 150,657
Corporate Owned: 137,281
Central Wisconsin Airport
Aircraft Accident/Incident Report
Mosinee, Wisconsin 54455
Thursday, December 22, 1988 16:29 CST
NTSB Narrative Summary Released at Completion of Accident
A MISSED APPROACH WAS EXECUTED ON THE FIRST APPROACH, AND THE CREW ELECTED TO FLY THE COMPLETE PROCEDURE TURN FOR THE ILS AT THE CENTRAL WISCONSIN AIRPORT. BOTH THE FIRST AND SECOND APPROACHS WERE FLOWN AT 3000 FEET MSL IN IMC CONDITIONS WITH MODERATE TO HEAVY RAIN. A TEMPERATURE INVERSION EXISTED FROM 5000 FEET TO 3000 FEET MSL WHICH CREATED CONDITIONS CONDUCIVE TO MODERATE TO SEVERE CLEAR ICING. THE AIRCRAFT WAS IN THESE CONDITIONS FOR 11.8 MINUTES. APPROXIMATELY ONE-HALF WAY THROUGH THE PROCEDURE TURN, WHICH WAS FLOWN WITH THE AUTOPILOT ON, THE CAPTAIN REDUCED POWER TO SLOW FOR GEAR EXTENSION. AT 157 KNOTS CLEAN CONFIGURATION THE AIRCRAFT STALLED AND ROLLED 80 DEGREES TO THE LEFT AND 60 DEGREES TO THE RIGHT. THE CREW APPLIED FULL POWER AND EXECUTED STALL RECOVERY PROCEDURES. THE AIRCRAFT WAS RECOVERED WITH AN ALTITUDE LOSS OF 600 FEET. THE CREW DID NOT PERCEIVE ANY ICE ACCRETION, AND THE AIRFRAME DEICE WAS NOT ON UNTIL AFTER THE STALL. THE THIRD APPROACH WAS UNEVENTFUL.
NTSB Probable Cause Narrative
STALL INDUCED BY THE ACCRETION OF MODERATE TO SEVERE CLEAR ICING.
Event Information
| Type of Event | Incident |
| Event Date | 12/22/1988 |
| Event Day of the Week | Thursday |
| Time of Event | 1629 |
| Event Time Zone | Central Standard Time |
| Event City | MOSINEE |
| Event State | WISCONSIN |
| Event Country | -- |
| Zipcode of the event site | 54455 |
| Event Date Year | 1988 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | CENTRAL WISCONSIN |
| Event Location Nearest Airport ID | CWA |
| 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 | 1277 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1620 Central Standard Time |
| Direction of event from weather observation facility (degrees) | 257 |
| Weather Observation Facility ID | CWA |
| Elevation of weather observation facility | 1277 |
| Distance of event from weather observation facility (units?) | 10 |
| Time Zone of the weather observation | CST |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 4000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Partial Obscuration |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 1 |
| Air Temperature at event time (in degrees celsius) | -1 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 130 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 15 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 20 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Light |
| 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 | 37 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 5115 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Dec 22 1988 12:00AM |
| NTSB Notification Time | 2000 |
| Fiche Number and/or location -used to find docket information | 39759 |
| Date of most recent change to record | Dec 13 2000 12:21PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N427MQ |
| NTSB Number | CHI89IA034 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | None |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | AEROSPATIALE |
| Aircraft Model | ATR-42 |
| Aircraft Series Identifier | ATR 42 |
| Aircraft Serial Number | 0091 |
| Certified Max Gross Weight | 36825 |
| 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 | 50 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | 1819 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | SIMMONS AIRLINES, INC |
| Aircraft Owner Street Address | MARQUETTE COUNTY AIRPORT |
| Aircraft Owner City | NEGAUNEE |
| Aircraft Owner State | MI |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 49866 |
| Operator is an individual? | -- |
| Operator Name | SIMMONS AIRLINES |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 198A AIRPORT DR., MARQUETTE AP |
| Operator City | NEGAUNEE |
| Operator State | MI |
| Operator Country | |
| Operator Zip code | 49866 |
| Operator Code | SIMA |
| 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 | No |
| Departure Airport Code | ORD |
| Departure City | CHICAGO |
| Departure State | IL |
| Departure Country | |
| Departure Time | 1525 |
| Departure Time Zone | CST |
| 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 | Sep 28 2001 1:06PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 8 |
| Runway Length | 7645 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |