Individually Owned: 151,845
Corporate Owned: 143,699
Tucson Airport
Aircraft Accident/Incident Report
Tucson, Arizona 85706
Sunday, April 25, 1993 17:38 MST
NTSB Narrative Summary Released at Completion of Accident
THE PILOT HAD RECENTLY PURCHASED THE TWIN ENGINE AIRPLANE AND HAD ACCUMULATED ABOUT 123 TOTAL HOURS OF MULTI ENGINE TIME, WITH ABOUT 115 HOURS IN THE ACCIDENT AIRPLANE. WITNESSES STATED THAT JUST AFTER ROTATION THE AIRPLANE PITCHED UP ABRUPTLY AND ROTATED TO THE RIGHT IMPACTING THE GROUND ABOUT 2000 FEET BEYOND THE APPROXIMATE POINT OF ROTATION AND ABOUT 1500 FEET TO THE RIGHT OF THE RUNWAY CENTER LINE. POST CRASH EXAMINATION OF THE WRECKAGE REVEALED THAT THE AFT UTILITY DOORS WERE UNLATCHED, WITH THE AFT DOOR ROTATED REARWARD AGAINST THE FUSELAGE AND THE EXTENSION LIMITING HINGES SHEARED AT THE HINGE PIN. THE ELEVATOR TRIM TABS WERE FOUND IN THE LANDING CONFIGURATION WITH TAB DEFLECTIONS AT ABOUT 9 DEGREES DOWN. THE RUDDER TRIM TAB WAS FOUND 20 DEGREES LEFT DEFLECTION. BOTH ENGINES WERE REMOVED TO AN ENGINE OVERHAUL FACILITY FOR DETAILED EXAMINATION. NO MECHANICAL DISCREPANCIES WERE FOUND AND POWER AND ROTATION SIGNATURES WERE EVIDENT. THE AIRPLANE WAS DEPARTING ON RUNWAY 11L FROM TAXIWAY 6 WITH A NINE KNOT TAILWIND AND 9950 FEET OF RUNWAY
NTSB Probable Cause Narrative
THE PILOTS IMPROPER PREFLIGHT INSPECTION, HIS FAILURE TO COMPELTELY SECURE THE AFT UTILITY DOOR, AND HIS FAILURE TO RECONFIGURE THE TRIM TABS TO A TAKEOFF SETTING. THE UTILITY DOOR'S SUDDEN OPENING JUST AFTER ROTATION AND THE EFFECT OF THE NOSE UP TRIM SETTING LED TO AN INADVERTENT STALL DURING THE TAKEOFF INITIAL CLIMB.
Event Information
| Type of Event | Accident |
| Event Date | 4/25/1993 |
| Event Day of the Week | Sunday |
| Time of Event | 1738 |
| Event Time Zone | Mountain Standard Time |
| Event City | TUCSON |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 85706 |
| Event Date Year | 1993 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | TUCSON |
| Event Location Nearest Airport ID | TUS |
| 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 | 2641 |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1737 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 170 |
| Weather Observation Facility ID | TUS |
| Elevation of weather observation facility | 2641 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | MST |
| 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) | 40 |
| Air Temperature at event time (in degrees celsius) | 31 |
| Dew Point at event time (in degress fahrenheit) | -4 |
| Wind Direction (degrees magnetic) | 310 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | -- |
| 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) | 475 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 25 1993 12:00AM |
| NTSB Notification Time | 1820 |
| Fiche Number and/or location -used to find docket information | 51083 |
| Date of most recent change to record | Dec 11 2000 1:14PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N158WB |
| NTSB Number | LAX93FA186 |
| 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 | Ground |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BEECH |
| Aircraft Model | 58 |
| Aircraft Series Identifier | 58 |
| Aircraft Serial Number | TH-396 |
| Certified Max Gross Weight | 5400 |
| 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 | 6 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Apr 6 1992 12:00AM |
| Airframe hours since last inspection | 115 |
| Airframe Hours | 2310 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | SUPKOFF, JAY |
| Aircraft Owner Street Address | 5040 N. VIA GELSOMINO |
| Aircraft Owner City | SARATOGA |
| Aircraft Owner State | CA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 85716 |
| Operator is an individual? | -- |
| Operator Name | JAY M. SUPKOFF |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 5040 N. VIA GELSOMINO |
| Operator City | SARATOGA |
| Operator State | CA |
| Operator Country | |
| Operator Zip code | 85716 |
| 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) | Personal |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 1737 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | SJC |
| Destination City | SAN JOSE |
| Destination State | CA |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:34AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 11 |
| Runway Length | 10994 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |