Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Flamingo, Florida 33030
Friday, November 9, 1990 14:47 EST
NTSB Narrative Summary Released at Completion of Accident
AS THE ACFT (N21ST) WAS EN ROUTE ON A FLT FROM KEY WEST TO NAPLES, FL, THE PLT OF ANOTHER ACFT SAW A 'FIRE BALL' IN THE VCNTY OF WHERE N21ST SUBSEQUENTLY CRASHED. WHEN N21ST DID NOT ARRIVE, A SEARCH WAS INITIATED. THE WRECKAGE WAS FND THE NEXT DAY AT 1704 EST, IN THE EVERGLADES NATL PARK, NR FLAMINGO, FL. DRG IMPACT, THE MAIN WRECKAGE WAS BURIED IN 30' OF MUD. THE LEFT OUTBOARD WING SECTION (FM JUST OUTBOARD OF THE ENG NACELLE TO THE WING TIP) WAS FND APRX 1 MI FM THE MAINWRECKAGE. AN EXAM REVEALED THE WING HAD FAILED WHERE THE NACELLE FUEL TANK & THE AUX FUEL TANK BOOST PUMPS WERE MOUNTED.NO EXHAUST SYS FAILURE OR LEAKAGE FM THE FUEL TANKS WAS FND IN THE AREA OF THE FIRE. THE GREATEST FIRE DMG WAS AT A POINT WHERE THE LEFT NACELLE FUEL TANK BOOST PUMP WAS MOUNTED & AFT FM THERE TO WHERE THE REAR WING SPAR HAD BURNED THRU. THE ELEC FUEL BOOST PUMPS WERE NOT RECOVERED AFTER THE ACDNT. THE IGNITION SOURCE FOR THE FIRE WAS NOT DETERMINED.
NTSB Probable Cause Narrative
AN UNDETERMINED AIRFRAME/COMPONENT/SYSTEM FAILURE/MALFUNCTION, WHICH RESULTED IN A FUEL FED FIRE IN THE LEFT WING.
Event Information
| Type of Event | Accident |
| Event Date | 11/9/1990 |
| Event Day of the Week | Friday |
| Time of Event | 1447 |
| Event Time Zone | Eastern Standard Time |
| Event City | FLAMINGO |
| Event State | FLORIDA |
| Event Country | -- |
| Zipcode of the event site | 33030 |
| Event Date Year | 1990 |
| Event Date Month | 11 |
| 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 | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1355 Eastern Standard Time |
| Direction of event from weather observation facility (degrees) | 180 |
| Weather Observation Facility ID | MTH |
| Elevation of weather observation facility | 7 |
| Distance of event from weather observation facility (units?) | 30 |
| Time Zone of the weather observation | EST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 10000 |
| 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) | 10 |
| Air Temperature at event time (in degrees celsius) | 31 |
| Dew Point at event time (in degress fahrenheit) | 27 |
| Wind Direction (degrees magnetic) | 120 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 15 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 2000 |
| 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 | 3 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 1825 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Nov 10 1990 12:00AM |
| NTSB Notification Time | 1520 |
| Fiche Number and/or location -used to find docket information | 43465 |
| Date of most recent change to record | Dec 12 2000 5:33PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N21ST |
| NTSB Number | MIA91FA023 |
| 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 | In-flight |
| Aircraft Explosion | In-flight |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 421B |
| Aircraft Series Identifier | 421B |
| Aircraft Serial Number | 421B-0963 |
| Certified Max Gross Weight | 7450 |
| 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 | 8 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jun 28 1990 12:00AM |
| Airframe hours since last inspection | 51 |
| Airframe Hours | 2741 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | ST. PAUL AVIATION |
| Aircraft Owner Street Address | 445 MINNESOTA ST. |
| Aircraft Owner City | ST. PAUL |
| Aircraft Owner State | MN |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 55101 |
| 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 | 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 | -- |
| 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 | No |
| Departure Airport Code | EYW |
| Departure City | KEY WEST |
| Departure State | FL |
| Departure Country | |
| Departure Time | 1415 |
| Departure Time Zone | EST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | APF |
| Destination City | NAPLES |
| Destination State | FL |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| 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 | -- |