Aircraft Accident/Incident Report

Gilroy, California 95020
Monday, December 18, 2006 15:54 PST

NTSB Narrative Summary Released at Completion of Accident

During a multi-engine instructional flight, the airplane entered a spin and descended into a wastewater treatment facility. Flight school personnel indicated that the intended flight plan was for the instructor to teach Vmc demonstrations to the private pilot undergoing instruction (PUI) and the passenger. During a Vmc demonstration, power is reduced on the critical engine (left) and the airplane is recovered prior to loss of directional control or stall. Radar data indicated that the flight departed and flew in a south-southeasterly direction. The airplane climbed to an altitude of approximately 4,400 feet mean sea level and showed a decrease in true airspeed, prior to disappearing from radar. Post accident examination revealed that the left engine was producing no to low power at the time of impact and the right engine was producing mid to high power, consistent with a Vmc demonstration. Examination of the engines and propellers revealed no evidence of a mechanical malfunction or failure, and control continuity was obtained. The PUI had accrued 2.7 hours in multi-engine airplanes at the time of the accident and the passenger had accrued 8.3 hours in multi-engine airplanes. Performance calculations using the airplane's presumed radar track showed that during the last portion of the flight, the calibrated airspeed decreased to 110 knots and the rate of descent was 400 feet per minute, and the track showed a turn to the left, prior to dropping off of radar. The calibrated airspeed of 110 knots is greater than the Vmc speed of 69.5 knots.

NTSB Probable Cause Narrative

The certified flight instructor's failure to maintain directional control of the airplane and inadequate supervision of the flight, which resulted in a stall/spin.

Event Information

Type of Event Accident
Event Date 12/18/2006
Event Day of the Week Monday
Time of Event 1554
Event Time Zone Pacific Standard Time
Event City Gilroy
Event State CALIFORNIA
Event Country --
Zipcode of the event site 95020
Event Date Year 2006
Event Date Month 12
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 365898N
Event Location Longitude 1213187W
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 --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1553 Pacific Standard Time
Direction of event from weather observation facility (degrees) 210
Weather Observation Facility ID WVI
Elevation of weather observation facility 163
Distance of event from weather observation facility (units?) 11
Time Zone of the weather observation PST
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 10
Dew Point at event time (in degress fahrenheit) -3
Wind Direction (degrees magnetic) 240
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 3
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.23
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 3
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 22425
NTSB Notification Source FAA Com Center
NTSB Notification Date Dec 18 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Nov 29 2007 8:02AM
User who most recently changed record NTSB\johb
Basic weather conditions Visual Meteorological Cond
FAA District Office WP-SJC-FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N144PG
NTSB Number SEA07FA035
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Beech
Aircraft Model D95A
Aircraft Series Identifier --
Aircraft Serial Number TD-601
Certified Max Gross Weight 4200
Aircraft Category Airplane
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 5
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Nov 1 2006 12:00AM
Airframe hours since last inspection 5935
Airframe Hours 5950
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name California In Nice, Inc.
Aircraft Owner Street Address 2575 Robert Fowler Way
Aircraft Owner City San Jose
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 95148
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) Instructional
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code SJC
Departure City San Jose Int'l
Departure State CA
Departure Country USA
Departure Time 1530
Departure Time Zone PST
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code RHV
Destination City Reid-Hillview
Destination State CA
Destination Country USA
Specific Phase of Flight Unknown
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Oct 3 2007 2:46PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location NA
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --