Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Petaluma, California 94952
Sunday, October 7, 2001 22:00 PDT
NTSB Narrative Summary Released at Completion of Accident
The noninstrument rated pilot reported that he received a weather briefing and that visual flight rules (VFR) conditions prevailed at his destination, 31 miles to the southeast. It was a dark, moonless, night but stars were visible in the sky at the departure airport with haze to the west. Lights were visible 10 miles to the south. The pilot departed on runway 29 and made a right, downwind departure. During the departure turn, he encountered instrument meteorological conditions at about 900 feet. He reported that while in the clouds he had difficulty leveling the wings and there was "some altitude fluctuation." During this time there was a "pop" sound and the aircraft became difficult to control. He broke out on top of the clouds at 2,700 feet and proceeded to landing at his original destination. Control of the aircraft required him to input full right rudder control, 90 percent of available right aileron control, and to reduce power on the right engine. Inspection of the left wing revealed damage to the outboard 5 feet of the wing leading edge and embedded tree debris.
NTSB Probable Cause Narrative
The pilot's inadvertent (dark, nighttime) VFR flight into instrument meteorological conditions and subsequent loss of altitude control. A factor in the accident was the pilot's inadequate preflight weather evaluation.
Event Information
| Type of Event | Accident |
| Event Date | 10/7/2001 |
| Event Day of the Week | Sunday |
| Time of Event | 2200 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Petaluma |
| Event State | CALIFORNIA |
| Event Country | -- |
| Zipcode of the event site | 94952 |
| Event Date Year | 2001 |
| Event Date Month | 10 |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 2253 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 134 |
| Weather Observation Facility ID | OAK |
| Elevation of weather observation facility | 6 |
| Distance of event from weather observation facility (units?) | 36 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 900 |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | -- |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 13 |
| Dew Point at event time (in degress fahrenheit) | 11 |
| Wind Direction (degrees magnetic) | 280 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 8 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.09 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 11606 |
| NTSB Notification Source | |
| NTSB Notification Date | Oct 8 2001 12:00AM |
| NTSB Notification Time | 950 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | May 14 2002 9:31AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Instrument Meteorological Cond |
| FAA District Office | Oakland, California |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7846C |
| NTSB Number | LAX02LA001 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Aero Commander |
| Aircraft Model | 500 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 724 |
| Certified Max Gross Weight | 6000 |
| 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 | 7 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Sep 1 2001 12:00AM |
| Airframe hours since last inspection | 5 |
| Airframe Hours | 12300 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Ben J. Pfaff |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Pleasant Hill |
| Aircraft Owner State | CA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 94523 |
| Operator is an individual? | No |
| 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 | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| 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 | O69 |
| Departure City | Petaluma |
| Departure State | CA |
| Departure Country | USA |
| Departure Time | 2200 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | CCR |
| Destination City | Concord |
| Destination State | CA |
| Destination Country | USA |
| Specific Phase of Flight | Unknown |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Feb 25 2002 12:49PM |
| User who most recently changed record | COOS |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |