Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Cheyenne, Wyoming 82009
Friday, April 21, 1995 10:16 MDT
NTSB Narrative Summary Released at Completion of Accident
SHORTLY AFTER TAKEOFF, THE PILOT REPORTED HE HAD 'A PROBLEM...AN OVERBOOST SITUATION,' AND WANTED TO RETURN FOR LANDING. INSTRUMENT METEOROLOGICAL CONDITIONS PREVAILED, SO THE PILOT WAS CLEARED FOR THE ILS RUNWAY 26 APPROACH. A WITNESS SAW THE AIRPLANE EMERGE FROM THE LOW OVERCAST IN A WINGS LEVEL DESCENT, THEN PITCH OVER TO A NEAR VERTICAL ATTITUDE AND IMPACT A SHOPPING CENTER SIGN. THE LEFT TURBOCHARGER WASTEGATE WAS FOUND IN THE OPEN (LOW BOOST) POSITION, AND THE RIGHT TURBOCHARGER WASTEGATE WAS FOUND IN THE CLOSED (HIGH BOOST) POSITION. THE RIGHT TURBOCHARGER BUTTERFLY VALVE WAS SEVERELY ERODED, THE PIN WAS MISSING, AND THE VALVE WAS FREE TO ROTATE ON THE SHAFT. A HOLE WAS BURNT THROUGH THE RIGHT ENGINE NUMBER 1 CYLINDER EXHAUST VALVE. BOTH PROPELLERS WERE IN THE LOW PITCH-HIGH RPM RANGE. BOTH ENGINES AND TURBOCHARGERS WERE ORIGINAL EQUIPMENT AND HAD NOT BEEN OVERHAULED IN 21 YEARS. A TOXICOLOGY TEST SHOWED 0.564 MCG/ML OF SERTRALINE (ANTIDEPRESSANT) IN THE PILOT'S BLOOD. SERTRALINE WAS NOT APPROVED FOR USE WHILE FLYING AN AIRCRAFT.
NTSB Probable Cause Narrative
THE PILOT'S FAILURE TO MAINTAIN AIRCRAFT CONTROL. FACTORS WERE THE INSTRUMENT WEATHER CONDITONS AND THE EXCESSIVE WORKLOAD IMPOSED ON THE SOLO PILOT ATTEMPTING TO DEAL WITH AN EMERGENCY SITUATION WHILE FLYING IN INSTRUMENT METEOROLOGICAL CONDITIONS.
Event Information
| Type of Event | Accident |
| Event Date | 4/21/1995 |
| Event Day of the Week | Friday |
| Time of Event | 1016 |
| Event Time Zone | Mountain Daylight Time |
| Event City | CHEYENNE |
| Event State | WYOMING |
| Event Country | -- |
| Zipcode of the event site | 82009 |
| Event Date Year | 1995 |
| Event Date Month | 4 |
| 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 | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | Full |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1024 Mountain Daylight Time |
| Direction of event from weather observation facility (degrees) | 180 |
| Weather Observation Facility ID | CYS |
| Elevation of weather observation facility | 6156 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | MDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 300 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 0.5 |
| Air Temperature at event time (in degrees celsius) | 1 |
| Dew Point at event time (in degress fahrenheit) | 1 |
| Wind Direction (degrees magnetic) | 100 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 5888 |
| Intensity of Precipitation | Light |
| 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 | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 1 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 906 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Apr 21 1995 12:00AM |
| NTSB Notification Time | 1100 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 7 2000 4:12PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N711PS |
| NTSB Number | FTW95FA177 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | Ground |
| Aircraft Manufacturer's Full Name | BEECH |
| Aircraft Model | 60 |
| Aircraft Series Identifier | 60 |
| Aircraft Serial Number | P-4 |
| Certified Max Gross Weight | 6725 |
| 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 1 1994 12:00AM |
| Airframe hours since last inspection | 179 |
| Airframe Hours | 3462 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | RML, INC. |
| Aircraft Owner Street Address | 7214 TUMBLEWOOD DR. |
| Aircraft Owner City | CHEYENNE |
| Aircraft Owner State | WY |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 82009 |
| Operator is an individual? | -- |
| Operator Name | HOMMEL, DANIEL J. |
| Operator Same as Owner? | No |
| 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 | 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 | CYS |
| Departure City | |
| Departure State | WY |
| Departure Country | |
| Departure Time | 1006 |
| Departure Time Zone | MDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | COS |
| Destination City | COLORADO SPGS |
| Destination State | CO |
| Destination Country | |
| Specific Phase of Flight | Climb |
| 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 | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |