Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Morris, Minnesota 56267
Saturday, December 23, 1995 12:34 CST
NTSB Narrative Summary Released at Completion of Accident
A witness who observed the airplane before the accident, saw the airplane 'performing a steep climb and then slowly turning left and coming back down. The airplane then straightened out and repeated the maneuver.' The airplane wreckage was discovered approximately 25 minutes later. The pilot/owner-builder told a friend the day before the accident that he intended to test the airplane to see how it would handle in stalls and stall recoveries. Examination of the wreckage revealed that the elevator bob weight was mounted on the idler arm upside down. A mock up of the assembly revealed the upside-down elevator bob weight was contacting the aft elevator push rod, resulting in a partial blockage of the elevator whenever forward stick controls were applied. This limited the elevator control surface to approximately 7 degrees of down elevator travel range. The assembly plans, provided by the kit manufacturer, were designed to provide a down elevator travel range of 13 degrees. The aircraft logbook indicated that as of 12/21/95, the airplane had logged 13.1 hours.
NTSB Probable Cause Narrative
the partially blocked elevator and improper installation of the elevator bob weight by the owner/builder which prevented full travel of the elevator control system. Factors relating to this accident were the intentional stall and inability to adequately recover from the stall.
Event Information
| Type of Event | Accident |
| Event Date | 12/23/1995 |
| Event Day of the Week | Saturday |
| Time of Event | 1234 |
| Event Time Zone | Central Standard Time |
| Event City | MORRIS |
| Event State | MINNESOTA |
| Event Country | -- |
| Zipcode of the event site | 56267 |
| Event Date Year | 1995 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1235 Central Standard Time |
| Direction of event from weather observation facility (degrees) | 180 |
| Weather Observation Facility ID | MOX |
| Elevation of weather observation facility | 1130 |
| Distance of event from weather observation facility (units?) | 6 |
| Time Zone of the weather observation | CST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 2300 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Unknown |
| 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) | -3 |
| Dew Point at event time (in degress fahrenheit) | -7 |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Calm |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 1150 |
| 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 | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2002 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Dec 26 1995 12:00AM |
| NTSB Notification Time | 800 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 7 2000 4:49PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N2114Z |
| NTSB Number | CHI96FA065 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | MUMM |
| Aircraft Model | LANCAIR |
| Aircraft Series Identifier | LANCAIR |
| Aircraft Serial Number | 438-320188FB |
| Certified Max Gross Weight | 1685 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | Yes |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Nov 16 1995 12:00AM |
| Airframe hours since last inspection | 13 |
| Airframe Hours | 13 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | JERRY A. MUMM |
| Aircraft Owner Street Address | RR 1, BOX 115 |
| Aircraft Owner City | HOLLOWAY |
| Aircraft Owner State | MN |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 56249 |
| 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 | |
| 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) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | MOX |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1210 |
| Departure Time Zone | CST |
| 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 | -- |
| 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 | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |