Homedale Muni Airport
Aircraft Accident/Incident Report

Homedale, Idaho 83628
Wednesday, September 3, 2003 9:00 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that the airplane's engine developed an uncharacteristic vibration while in a cruise flight configuration. The pilot stated that he diverted to a nearby airport and shortly after entering a downwind for the intended runway, the engine "quit." The pilot stated he turned directly toward runway 31 after the engine failure. Shortly after completing the turn to final, the pilot landed on the intended runway. The pilot reported that the airplane "...hit very hard." It was later discovered that the pilot's seat collapsed as a result of the hard landing. Examination of the aircraft's engine revealed a fracture in the number four cylinder head. The full thickness fracture emanated from the top sparkplug hole and traveled the circumference of the cylinder, terminating at the bottom sparkplug hole. The metallurgical examination of the cylinder revealed that the cylinder head fractured due to fatigue. The exam report indicated that multiple fatigue failure initiation sites were observed, most notably a series of cracks that initiated at each of the two sparkplug holes. Maintenance records indicated that the failed cylinder was repaired due to valve pitting. Following the repairs, the cylinder was returned to service. At the time of the repairs, the engines total time was 6,689 hours; 726 hours since major overhaul. The cylinder total time since manufacture could not be determined. At the time of the accident, the engine total time was approximately 7,260 hours; 1,319 hours since major overhaul.

NTSB Probable Cause Narrative

Loss of engine power during descent due to a failed cylinder head.

Event Information

Type of Event Accident
Event Date 9/3/2003
Event Day of the Week Wednesday
Time of Event 900
Event Time Zone Mountain Daylight Time
Event City Homedale
Event State IDAHO
Event Country --
Zipcode of the event site 83628
Event Date Year 2003
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 433653N
Event Location Longitude 1165517W
Event Location Airport HOMEDALE MUNI
Event Location Nearest Airport ID S66
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 2210
Weather Briefing Completeness Not pertinent
Investigator's weather source Pilot
Time of the weather observation
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID --
Elevation of weather observation facility --
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation --
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) --
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) --
Variable Wind Indicator --
Wind Speed (knots) --
Wind Velocity Indicator Calm
Wind Gust Indicator Unknown
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) --
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 1
Injury Total None --
Injury Total Serious 1
Injury Total All 2
Investigating Agency NTSB
NTSB Docket Number (internal use) 15588
NTSB Notification Source BOI FSDO
NTSB Notification Date Sep 3 2003 12:00AM
NTSB Notification Time 1100
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Jun 3 2004 1:28PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Boise, Idaho

Aircraft Involved

Aircraft #1

Aircraft Registration Number N15367
NTSB Number SEA03LA183
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed Unknown
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name Piper
Aircraft Model PA-28-140
Aircraft Series Identifier --
Aircraft Serial Number 28-7325048
Certified Max Gross Weight 2150
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 4
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Nov 14 2002 12:00AM
Airframe hours since last inspection 36
Airframe Hours 3537
ELT Installed Yes
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name Ronald E. LaBrousse
Aircraft Owner Street Address --
Aircraft Owner City Ontario
Aircraft Owner State OR
Aircraft Owner Country USA
Aircraft Owner Zipcode 97914
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 No
Departure Airport Code ONO
Departure City ONTARIO
Departure State OR
Departure Country USA
Departure Time 800
Departure Time Zone MDT
Destination Same as Local Flt crash at destination city
Destination Airport Code S66
Destination City Homedale
Destination State --
Destination Country USA
Specific Phase of Flight Landing
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Apr 12 2004 1:53PM
User who most recently changed record STAM
Since inspection or accident Last Inspection
Event Location Runway Number and Location 31
Runway Length 2900
Runway Width 50
Sight Seeing flight No
Air Medical Flight No
Medical Flight --