Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Cochise, Arizona 85606
Friday, February 19, 1993 15:45 MST
NTSB Narrative Summary Released at Completion of Accident
THE ENGINE FLAMED OUT AFTER ENCOUNTERING FORECASTED ICING. (THE PILOT HAD EARLIER USED ALTERNATE AIR, BUT WAS UNABLE TO MAINTAIN ALTITUDE DUE TO THE POWER LOSS). DURING AIR RESTART, TOT ROSE TO ABOUT 520 DEG, THE ENGINE WOULD NOT ACCELERATE, AND QUICKLY DIED AWAY. A FORCED LANDING WAS MADE IN MOUNTAINOUS TERRAIN. THE INDUCTION SYSTEM HAS NORMAL AND ALTERNATE AIR PATHS. NORMAL PATH HAS TWO RAM AIR SCOOPS DIRECTING AIR TO AN AIR BOX, THEN DOWN TO THE ENG INLET. SELECTION OF ALT AIR PATH DIRECTS ENGINE BLEED AIR TO CLOSE THE RAM AIR SCOOP DOORS, AND OPEN ALT AIR DOOR ON BOTTOM OF COWL. AIR THEN CIRCULATES AROUND ENGINE AND THROUGH A SPRING LOADED DOOR ON REAR OF AIR BOX. ON SITE EXAM FOUND RAM AIR DOORS CLOSED AND COCKPIT LEVER ON ALT AIR. ALT AIR DOOR OPEN AIR LINE WAS FOUND TO HAVE A LOOSE B-NUT FITTING AT THE VALVE. CHECKLIST CALLS FOR ALT AIR DURING AIR START. STC HOLDER COULD NOT PRODUCE ANY ENGINEERING OR FLIGHT TEST DATA TO VALIDATE THAT ENGINE WOULD PRODUCE SUFFICIENT VACUUM TO OPEN AIR BOX SPRING LOADED DOOR DURING AIR START.
NTSB Probable Cause Narrative
THE PILOT'S CONTINUED FLIGHT INTO KNOWN FORECASTED ICING CONDITIONS, IN AN AIRPLANE NOT CERTIFICATED FOR SUCH FLIGHT, WHICH RESULTED IN AN ENGINE FLAMEOUT DUE TO ENGINE ICE/WATER INJESTION, AND THE PILOT'S INABILITY TO RESTART THE ENGINE DUE TO INADEQUATE INSTALLATION OF THE PNEUMATIC AIR LINES ON THE COWL DOOR SEQUENCING VALVES WHICH PREVENTED THE ALTERNATE AIR DOORS TO COMPLETELY CYCLE OPEN. THE INADEQUATE SYSTEM DESIGN LED TO A BLOCKED COMPRESSOR INLET. FACTORS IN THE ACCIDENT WERE: ICING CONDITIONS, INADEQUATE ENGINE AND INDUCTION ANTI-ICING SYSTEM DESIGN, FAILURE OF THE MANUFACTURER TO PERFORM ADEQUATE SYSTEM TESTING TO ENSURE ADEQUATE OPERATION, AND MOUNTAINOUS TERRAIN.
Event Information
| Type of Event | Accident |
| Event Date | 2/19/1993 |
| Event Day of the Week | Friday |
| Time of Event | 1545 |
| Event Time Zone | Mountain Standard Time |
| Event City | COCHISE |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 85606 |
| Event Date Year | 1993 |
| Event Date Month | 2 |
| 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 | Full |
| Investigator's weather source | Pilot |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 1200 |
| Lowest Non-Ceiling Height | 1200 |
| 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) | 5 |
| Air Temperature at event time (in degrees celsius) | 16 |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Light and Variable |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Light |
| METAR weather report | -- |
| Event Highest Injury | Minor |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 3 |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 3 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 626 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Feb 19 1993 12:00AM |
| NTSB Notification Time | 1637 |
| Fiche Number and/or location -used to find docket information | 51873 |
| Date of most recent change to record | Dec 11 2000 1:09PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9987M |
| NTSB Number | LAX93LA126 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna Soloy |
| Aircraft Model | TU206G |
| Aircraft Series Identifier | TU206G |
| Aircraft Serial Number | U20604636 |
| Certified Max Gross Weight | 3800 |
| 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 | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Feb 3 1993 12:00AM |
| Airframe hours since last inspection | 32 |
| Airframe Hours | 1304 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | Yes |
| ELT Type | -- |
| Aircraft Owner Name | DAEDALUS AVIATION, INC. |
| Aircraft Owner Street Address | 32 LOOCKERMAN SQUARE |
| Aircraft Owner City | DOVER |
| Aircraft Owner State | DE |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 19901 |
| Operator is an individual? | -- |
| Operator Name | HAMMONDS AIR SERVICE |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | P.O. BOX 966 |
| Operator City | HOUMA |
| Operator State | LA |
| Operator Country | |
| Operator Zip code | 70363 |
| 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) | Ferry |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | MYF |
| Departure City | SAN DIEGO |
| Departure State | CA |
| Departure Country | |
| Departure Time | 1300 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ELP |
| Destination City | EL PASO |
| Destination State | TX |
| Destination Country | |
| Specific Phase of Flight | Descent |
| 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 | -- |