Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Show Low, Arizona 85901
Sunday, January 12, 1992 8:40 MST
NTSB Narrative Summary Released at Completion of Accident
THE PILOT SAID WHILE IN LEVEL CRUISE ON AN IFR FLIGHT THE ENGINE BEGAN TO LOOSE POWER DUE TO CARBURETOR ICE AND ATTEMPTS TO REMEDY THE SITUATION WERE UNSUCCESSFUL WITH THE ENGINE EVENTUALLY LOOSING ALL POWER. THE PILOT DECLARED AN EMERGENCY WITH ALBUQUERQUE CENTER AND WAS RADAR VECTORED TOWARD THE SHOW LOW AIRPORT. THE FLIGHT WAS INTERMITTENTLY IN CLOUDS DURING THE EMERGENCY DESCENT AND BROKE OUT AT A LOW ALTITUDE. THE AIRCRAFT HAD INSUFFICIENT ALTITUDE TO MAKE THE AIRPORT AND LANDED IN THE ONLY AVAILABLE LOCATION, A FIELD ABOUT 23 MILES FROM THE AIRPORT. DURING ROLL OUT, THE AIRCRAFT COLLIDED WITH A DITCH AND NOSED OVER. POST ACCIDENT EXAMINATION OF THE AIRCRAFT BY FAA INSPECTORS REVEALED THAT THE CARBURETOR HEAT BOX HAD SEPARATED FROM THE HEAT MUFF OF THE EXHAUST SYSTEM AND WAS HANGING LOOSE IN THE COWLING ATTACHED ONLY BY THE FABRIC HOSE. A METAL BAND WHICH ATTACHES THE CARB HEAT BOX TO THE MUFF HAD SEPARATED. CHAFFING ON THE COWLING IN THE AREA OF WHERE THE HEAT BOX WAS HANGING INDICATED IT HAD BEEN SEPARATED FOR SOME TIME. THE LAST 100 HOUR INSPECTION WAS ACCOMPLISHED 80 OPERATING HOURS PRIOR TO THE ACCIDENT.
NTSB Probable Cause Narrative
THE FAILURE OF THE CARBURETOR HEAT BOX ATTACH STRAPS WHICH ALLOWED THE CARBURETOR HEAT BOX TO SEPARATE FROM THE EXHAUST SYSTEM HEAT MUFF AND RENDERED THE CARBURETOR HEAT SYSTEM INOPERATIVE. THE ENGINE THEN LOST POWER DUE TO CARBURETOR ICE.
Event Information
| Type of Event | Accident |
| Event Date | 1/12/1992 |
| Event Day of the Week | Sunday |
| Time of Event | 840 |
| Event Time Zone | Mountain Standard Time |
| Event City | SHOW LOW |
| Event State | ARIZONA |
| Event Country | -- |
| Zipcode of the event site | 85901 |
| Event Date Year | 1992 |
| Event Date Month | 1 |
| 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 | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 854 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 255 |
| Weather Observation Facility ID | SOW |
| Elevation of weather observation facility | 6411 |
| Distance of event from weather observation facility (units?) | 25 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 800 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Partial Obscuration |
| Sky Condition for Lowest Ceiling | Broken |
| 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) | -4 |
| Dew Point at event time (in degress fahrenheit) | -6 |
| Wind Direction (degrees magnetic) | 190 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| 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 | Light |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 141 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 46085 |
| Date of most recent change to record | Dec 11 2000 2:42PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1571E |
| NTSB Number | LAX92LA089 |
| 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 |
| Aircraft Model | 172N |
| Aircraft Series Identifier | 172N |
| Aircraft Serial Number | 17271049 |
| Certified Max Gross Weight | 2300 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Nov 30 1991 12:00AM |
| Airframe hours since last inspection | 80 |
| Airframe Hours | 9000 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | Yes |
| ELT Type | -- |
| Aircraft Owner Name | K & M AVIATION |
| Aircraft Owner Street Address | 18603 NW JONES MYER |
| Aircraft Owner City | PARKVILLE |
| Aircraft Owner State | MO |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 64153 |
| Operator is an individual? | -- |
| Operator Name | K & M AVIATION |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 18603 NW JONES MYER |
| Operator City | PARKVILLE |
| Operator State | MO |
| Operator Country | |
| Operator Zip code | 64153 |
| 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 | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | DVT |
| Departure City | PHOENIX |
| Departure State | AZ |
| Departure Country | |
| Departure Time | 730 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ABQ |
| Destination City | ALBUQUERQUE |
| Destination State | NM |
| Destination Country | |
| Specific Phase of Flight | Cruise |
| 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 | -- |