Anderson Field Airport
Aircraft Accident/Incident Report

Brewster, Washington 98812
Sunday, July 2, 2006 18:50 PDT

NTSB Narrative Summary Released at Completion of Accident

While in cruise flight at 5,000 feet the pilot heard a loud bang, followed by an instantaneous increase in RPM. Subsequent attempts to sustain engine power with throttle and propeller inputs were unsuccessful, which resulted in the pilot attempting a forced landing to a paved runway approximately 4 miles away. The airplane subsequently impacted the last row of trees of an orchard less than one-half mile from the end of the runway, which resulted in the airplane coming to rest on its belly oriented on an easterly heading. A post accident examination of the airplane's engine revealed that all three planetary gears were severely damaged, and all three gears appeared to have lost all gear teeth, with a portion of the gear teeth located in the oil sump. The reason for the damage to the planetary gears was not determined.

NTSB Probable Cause Narrative

The failure of the engine's three planetary gears for undetermined reasons. A factor contributing to the accident was the tree orchard.

Event Information

Type of Event Accident
Event Date 7/2/2006
Event Day of the Week Sunday
Time of Event 1850
Event Time Zone Pacific Daylight Time
Event City Brewster
Event State WASHINGTON
Event Country --
Zipcode of the event site 98812
Event Date Year 2006
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 480617N
Event Location Longitude 1194348W
Event Location Airport Anderson Field
Event Location Nearest Airport ID S97
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 0.4
Degrees magnetic from airport --
Airport Elevation 914
Weather Briefing Completeness --
Investigator's weather source Weather Observation Facility
Time of the weather observation 1853 Pacific Daylight Time
Direction of event from weather observation facility (degrees) 60
Weather Observation Facility ID OMK
Elevation of weather observation facility 1305
Distance of event from weather observation facility (units?) 20
Time Zone of the weather observation PDT
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) 25
Dew Point at event time (in degress fahrenheit) 1
Wind Direction (degrees magnetic) 200
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) 29.93
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 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 21020
NTSB Notification Source FAA ROC
NTSB Notification Date Jul 2 2006 12:00AM
NTSB Notification Time --
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Feb 26 2007 11:14AM
User who most recently changed record NTSB\lema
Basic weather conditions Visual Meteorological Cond
FAA District Office Spokane, Washington

Aircraft Involved

Aircraft #1

Aircraft Registration Number N8120H
NTSB Number SEA06LA133
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 Nanchang China
Aircraft Model CJ-6
Aircraft Series Identifier --
Aircraft Serial Number 48-21
Certified Max Gross Weight 3080
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 2
Number of Engines 1
Fixed gear or retractable gear Retractable
Aircraft, Type of Last Inspection Conditional
Date of Last Inspection Apr 1 2006 12:00AM
Airframe hours since last inspection 7
Airframe Hours 2112
ELT Installed No
ELT Activated --
ELT Aided Location of Event Site --
ELT Type --
Aircraft Owner Name Terry MClaughlin
Aircraft Owner Street Address --
Aircraft Owner City Salem
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97304
Operator is an individual? Yes
Operator Name Douglas E. Sapp
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address --
Operator City Omak
Operator State WA
Operator Country USA
Operator Zip code 98841
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 No
Departure Airport Code AWO
Departure City Arlington
Departure State WA
Departure Country USA
Departure Time 1800
Departure Time Zone PDT
Destination Same as Local Flt --
Destination Airport Code OMK
Destination City Omak
Destination State WA
Destination Country USA
Specific Phase of Flight Cruise
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Dec 13 2006 4:56PM
User who most recently changed record STAM
Since inspection or accident Time of Accident
Event Location Runway Number and Location 07
Runway Length 4000
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --