Individually Owned: 150,657
Corporate Owned: 137,281
Mason City Municipal Airport
Aircraft Accident/Incident Report
Mason City, Iowa 50401
Monday, July 13, 1987 20:17 CDT
NTSB Narrative Summary Released at Completion of Accident
THE AIRPLANE WAS IN A NORMAL APPEARING CLIMB AFTER TAKEOFF WHEN IT PITCHED UP TO A 70 TO 80 DEGREE ATTITUDE, STALLED, DROPPED THE RIGHT WING, THEN LEVELED THE WINGS AND HIT THE GROUND IN A NEAR-FLAT ATTITUDE. THE WEIGHT AND CG WERE WITHIN LIMITS. NO PREIMPACT PROBLEMS WERE FOUND THAT COULD CAUSE AN INADVERTENT PITCHUP. PILOT'S ONLY MEMORY IS THAT HE COULDN'T GET THE CONTROL COLUMN FAR ENOUGH FORWARD TO STOP THE PITCHUP. THE PILOT'S SEAT WAS FOUND IN THE FULL FORWARD POSITION WITH THE RIGHT LOCKING PIN IN THE LOCKING HOLE AND THE LEFT PIN 1/4TH OF AN INCH FORWARD OF THE FRONT LOCKING HOLE. THERE WERE NO VISIBLE MARKS ON EITHER OF THE LOCKING PINS. DEEP SCRATCHES WERE FOUND ON THE SIDES OF THE RAIL WHERE THE SEAT ATTACHMENTS NORMALLY SLIDE BACK AND FORTH WHEN THE SEAT IS ADJUSTED. EXAM OF THE OUTBOARD SIDE RECESSED SURFACE NEAR THE AFT END DISCLOSED WHAT APPEARED TO BE A FRESH SCRATCH.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 7/13/1987 |
| Event Day of the Week | Monday |
| Time of Event | 2017 |
| Event Time Zone | Central Daylight Time |
| Event City | MASON CITY |
| Event State | IOWA |
| Event Country | -- |
| Zipcode of the event site | 50401 |
| Event Date Year | 1987 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | MASON CITY MUNICIPAL |
| Event Location Nearest Airport ID | MCW |
| 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 | 1213 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 2017 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 310 |
| Weather Observation Facility ID | MCW |
| Elevation of weather observation facility | 1213 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | CDT |
| 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) | 15 |
| Air Temperature at event time (in degrees celsius) | 17 |
| Dew Point at event time (in degress fahrenheit) | 13 |
| Wind Direction (degrees magnetic) | 300 |
| 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 | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1759 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jul 13 1987 12:00AM |
| NTSB Notification Time | 2155 |
| Fiche Number and/or location -used to find docket information | 35103 |
| Date of most recent change to record | Dec 13 2000 2:37PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9391R |
| NTSB Number | MKC87FA138 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | AERO COMMANDER |
| Aircraft Model | 500-B |
| Aircraft Series Identifier | 500-B |
| Aircraft Serial Number | 500A-906-15 |
| Certified Max Gross Weight | 6750 |
| 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 | 2 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Feb 25 1987 12:00AM |
| Airframe hours since last inspection | 90 |
| Airframe Hours | 8390 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | JOHN D. TOWNER |
| Aircraft Owner Street Address | 3301 FAIRFAX TRFY. |
| Aircraft Owner City | KANSAS CITY |
| Aircraft Owner State | KS |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 66115 |
| Operator is an individual? | -- |
| Operator Name | MILLER FLYING SERVIC,INC. |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | BOX 307 |
| Operator City | GRAND ISLAND |
| Operator State | NE |
| Operator Country | |
| Operator Zip code | 68801 |
| Operator Code | |
| 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 | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 2017 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | DSM |
| Destination City | DES MOINES |
| Destination State | IA |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| 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 | 30 |
| Runway Length | 5500 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |