Gillespie Field Airport
Aircraft Accident/Incident Report

El Cajon, California 92020
Tuesady, June 27, 2006 11:20 PDT

NTSB Narrative Summary Released at Completion of Accident

The airplane's left main landing gear collapsed during the landing rollout. After performing maneuvers in the practice area, the flight instructor and student proceeded to a nearby airport to practice touch-and-goes. As they approached the airport traffic pattern, the student pilot moved the gear selector to the down position. Once the gear was down they noticed that the left main gear down light was not illuminated. They recycled the landing gear, but still received the same indication. A low approach and flyby past the tower confirmed that the gear was in the down position. The instructor decided to return to his home airport instead of landing at this airport. While en route, the instructor and student inspected the light bulbs of the indicator light and found them to be operating properly. They recycled the gear one more time. While doing this, the gear motor circuit breaker popped, and they smelled smoke in the cockpit. They pulled the landing gear circuit breakers immediately and the smoke smell cleared. The pilots extended the landing gear using the manual extension checklist. Once the gear came down, they still had the same unsafe gear indication. The instructor yawed the airplane in an attempt to lock the gear, but received the same unsafe indication. Upon arriving at his home airport, the instructor touched down using a soft-field landing technique. As the airplane decelerated, the left main landing gear collapsed and the left wing tip and the propeller struck the runway. Federal Aviation Administration inspectors examined the main landing gear after the accident. They found the left main landing gear "A" frame tube had failed. Airworthiness Directive 97-06-10 requires repetitive inspection of the main landing gear "A" frame assemblies for cracks and lubrication, and requires the replacement of any assembly found cracked. The actions specified in this AD are intended to prevent main landing gear failure and collapse because of a cracked "A" frame assembly. A review of the aircraft records indicated that AD 97-06-10 had been complied with during the last 100-hour inspection on June 21, 2006. This aircraft is operated by a flight school and the maintenance records show that it is operated at an activity level where a 100-hour inspection is accomplished once every 30 days or so.

NTSB Probable Cause Narrative

the failure of the "A" frame tube, which caused the left main landing gear to collapse.

Event Information

Type of Event Accident
Event Date 6/27/2006
Event Day of the Week Tuesday
Time of Event 1120
Event Time Zone Pacific Daylight Time
Event City El Cajon
Event State CALIFORNIA
Event Country --
Zipcode of the event site 92020
Event Date Year 2006
Event Date Month 6
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 324957N
Event Location Longitude 1165835W
Event Location Airport Gillespie Field
Event Location Nearest Airport ID KSEE
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 387
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1147 Pacific Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID SEE
Elevation of weather observation facility 388
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height 20000
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions --
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 25
Air Temperature at event time (in degrees celsius) 34
Dew Point at event time (in degress fahrenheit) 12
Wind Direction (degrees magnetic) 280
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 12
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.89
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 2
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 20439
NTSB Notification Source FAA
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Oct 3 2006 2:46PM
User who most recently changed record NTSB\JOHB
Basic weather conditions Visual Meteorological Cond
FAA District Office Federal Aviation Administration San Diego FSDO

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6720T
NTSB Number LAX06CA217
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 Beech
Aircraft Model 76
Aircraft Series Identifier --
Aircraft Serial Number ME-335
Certified Max Gross Weight 3900
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 4
Number of Engines 2
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection Jun 1 2006 12:00AM
Airframe hours since last inspection --
Airframe Hours 9119
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Scandanavian Aviation Academy
Aircraft Owner Street Address 681 Kenny Street
Aircraft Owner City El Cajon
Aircraft Owner State CA
Aircraft Owner Country USA
Aircraft Owner Zipcode 92020
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 Yes
Departure Airport Code KSEE
Departure City El Cajon
Departure State CA
Departure Country USA
Departure Time 1020
Departure Time Zone --
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code KSEE
Destination City El Cajon
Destination State CA
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jul 27 2006 4:00PM
User who most recently changed record COOS
Since inspection or accident Last Inspection
Event Location Runway Number and Location 27R
Runway Length 5341
Runway Width 100
Sight Seeing flight No
Air Medical Flight No
Medical Flight --