Cable Airport
Aircraft Accident/Incident Report

Upland, California 91786
Monday, June 4, 2007 10:22 PDT

NTSB Narrative Summary Released at Completion of Accident

A Certified Flight Instructor (CFI) was providing multiengine instruction to the pilot. They were in the traffic pattern, approximately 800 feet above ground level (agl), after completing several touch-and-go landings. The CFI stated that his regular method for setting up practice engine-out landings for a student was to close the mixture, allow the student to go through the process of controlling the airplane, and simulating the procedures to feather the inoperative engine's propeller. The instructor would then return the mixture to full rich, and verify engine operation. This would occur on downwind, and then the landing would be completed with the simulated inoperative engine at idle. On downwind, the instructor closed the mixture on the left engine. During this maneuver, the pilot turned the airplane left from base to final and the airspeed decreased. The airplane rolled sharply to the left and lost altitude. The instructor reduced both throttles and regained control of the airplane just as it collided with the roof of one house, bounced across another roof, and came to rest on top of a third house. The Federal Aviation Administration recommends that in-flight simulated engine failures at altitudes below 3,000 feet agl be introduced only by reduction of the throttle. Post-crash inspection of the engine and airframe found no anomalies that would have prevented normal operation.

NTSB Probable Cause Narrative

Failure of the pilot under instruction to maintain the minimum single engine control airspeed (air) and directional control while turning to final approach. Also causal was the flight instructor's inadequate supervision and delayed remedial actions.

Event Information

Type of Event Accident
Event Date 6/4/2007
Event Day of the Week Monday
Time of Event 1022
Event Time Zone Pacific Daylight Time
Event City Upland
Event State CALIFORNIA
Event Country --
Zipcode of the event site 91786
Event Date Year 2007
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 340600N
Event Location Longitude 1174100W
Event Location Airport CABLE
Event Location Nearest Airport ID CCB
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 1
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 953 Pacific Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID ONT
Elevation of weather observation facility 944
Distance of event from weather observation facility (units?) 5
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 25000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 2.5
Air Temperature at event time (in degrees celsius) 18
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 190
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) 29.97
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 2
Injury Total None --
Injury Total Serious 1
Injury Total All 3
Investigating Agency NTSB
NTSB Docket Number (internal use) 24262
NTSB Notification Source FAA
NTSB Notification Date Jun 4 2007 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Sep 26 2008 6:40PM
User who most recently changed record NTSB\lema
Basic weather conditions Instrument Meteorological Cond
FAA District Office WP-FSDO Riverside, CA

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4463T
NTSB Number LAX07LA186
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-34-200
Aircraft Series Identifier --
Aircraft Serial Number 34-7250102
Certified Max Gross Weight 4000
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 6
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection May 1 2007 12:00AM
Airframe hours since last inspection --
Airframe Hours 5704
ELT Installed Yes
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Roxy Corp
Aircraft Owner Street Address 7552 Hayvenhurst
Aircraft Owner City Van Nuys
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 91406
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 Yes
Departure Point Same as Event No
Departure Airport Code VNY
Departure City Van Nuys
Departure State CA
Departure Country USA
Departure Time 930
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code CCB
Destination City Upland
Destination State CA
Destination Country USA
Specific Phase of Flight Approach - VFR pattern - final approach
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Sep 5 2008 6:21PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location 24
Runway Length 3864
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --