Individually Owned: 150,657
Corporate Owned: 137,281
Monticello Airport
Aircraft Accident/Incident Report
Monticello, Utah 84535
Sunday, October 20, 1991 12:00 MDT
NTSB Narrative Summary Released at Completion of Accident
DURING CRUISE FLIGHT, ABOUT 5 MIN AFTER PASSING THE MONTICELLO AIRPORT, THE ENGINE BEGAN RUNNING ROUGH. THE PILOT REVERSED COURSE TO RETURN TO THE AIRPORT FOR A PRECAUTIONARY LANDING. AS HE WAS TURNING ONTO BASE LEG, THE ENGINE STOPPED RUNNING. SUBSEQUENTLY, THE AIRCRAFT WAS DAMAGED DURING A FORCED LANDING ABOUT 50 YARDS SHORT OF THE RUNWAY. AN EXAM OF THE ENGINE REVEALED THERE WAS NO OIL IN THE CRANKCASE, A HOLE WAS BURNED IN THE #5 PISTON FROM PRE-IGNITION/DETONATION, THERE WAS EVIDENCE OF ARCING OF THE LEFT MAG AND CONTAMINATION IN THE RIGHT MAG, AND THE FUEL SYSTEM WAS IMPROPERLY ADJUSTED. THE ACFT HAD 88 HOURS OF FLIGHT TIME, SINCE A MAJOR OVERHAUL OF THE ENGINE WAS COMPLETED ON 7/12/91.
NTSB Probable Cause Narrative
INADEQUATE MAINTENANCE/OVERHAUL OF THE ENGINE, AND SUBSEQUENT FAILURE OF THE #5 PISTON (HOLE BURNED IN PISTON), DUE TO PRE-IGNITION AND/OR DETONATION. ROUGH/UNEVEN TERRAIN IN THE EMERGENCY LANDING AREA WAS A RELATED FACTOR.
Event Information
| Type of Event | Accident |
| Event Date | 10/20/1991 |
| Event Day of the Week | Sunday |
| Time of Event | 1200 |
| Event Time Zone | Mountain Daylight Time |
| Event City | MONTICELLO |
| Event State | UTAH |
| Event Country | -- |
| Zipcode of the event site | 84535 |
| Event Date Year | 1991 |
| Event Date Month | 10 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | MONTICELLO |
| Event Location Nearest Airport ID | U43 |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 6998 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1150 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 10 |
| Weather Observation Facility ID | GJT |
| Elevation of weather observation facility | 4858 |
| Distance of event from weather observation facility (units?) | 80 |
| Time Zone of the weather observation | MDT |
| 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) | 90 |
| Air Temperature at event time (in degrees celsius) | 18 |
| Dew Point at event time (in degress fahrenheit) | -3 |
| Wind Direction (degrees magnetic) | 160 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 0 |
| Intensity of Precipitation | Unknown |
| 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 | 4 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 838 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | 0 |
| Fiche Number and/or location -used to find docket information | 45095 |
| Date of most recent change to record | Dec 12 2000 10:49AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1087H |
| NTSB Number | SEA92LA014 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | VFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | PIPER |
| Aircraft Model | PA-28R-201T |
| Aircraft Series Identifier | PA-28R-201 |
| Aircraft Serial Number | 28R-7703013 |
| Certified Max Gross Weight | 2900 |
| 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 | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jul 12 1991 12:00AM |
| Airframe hours since last inspection | 88 |
| Airframe Hours | 5030 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | JAMES J. BLOUNT JR. |
| Aircraft Owner Street Address | 525 ULNTA |
| Aircraft Owner City | GREEN RIVER |
| Aircraft Owner State | WY |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 82935 |
| Operator is an individual? | -- |
| Operator Name | JAMES J. BLOUNT JR. |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 525 ULNTA |
| Operator City | GREEN RIVER |
| Operator State | WY |
| Operator Country | |
| Operator Zip code | 82935 |
| 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 | No |
| Departure Airport Code | BDG |
| Departure City | BLANDING |
| Departure State | UT |
| Departure Country | |
| Departure Time | 1136 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | RKS |
| Destination City | ROCK SPRINGS |
| Destination State | WY |
| Destination Country | |
| Specific Phase of Flight | Landing |
| 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 | 34 |
| Runway Length | 4817 |
| Runway Width | 75 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |