Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Enumclaw, Washington 98022
Tuesady, January 13, 2004 15:15 PST
NTSB Narrative Summary Released at Completion of Accident
During a power-on stall sequence the aircraft's engine experienced a significant partial power loss, followed by the engine oil pressure dropping to zero. Since there was no suitable landing area directly below the area where the power loss occurred, the pilot headed to the south and attempted to land on what appeared to be the only available reasonably safe terrain. Based upon his quick evaluation of the landing site, the pilot chose to leave the gear fully retracted. Although the initial touchdown was uneventful, soon thereafter the aircraft contacted the rough/uneven terrain in a manner that resulted in substantial damage to the airframe. A post-accident inspection of the engine revealed that the crankcase mating flange was cracked in two different places, and the number three cylinder push rod and push rod tube were bent in a manner consistent with compression of the pushrod from its ends. The heads of six of the eight cam followers had fractured, the crankcase surface behind all but two of the follower heads was dented and gouged, and the crankcase surface behind two of the heads had small chunks of fractured steel imbedded/crushed into the metal of the case. Removal of the oil pan revealed about a dozen pieces of metal that were clearly identifiable as sections of the cam follower heads. Further inspection of the engine and its cylinders could not determine the initiating event leading to the fracturing of the cam followers.
NTSB Probable Cause Narrative
A loss of engine power while maneuvering due to the failure of the heads of six of the eight cam followers. Factors include the pilot's decision to keep the gear retracted during the forced landing, and the rough/uneven terrain.
Event Information
| Type of Event | Accident |
| Event Date | 1/13/2004 |
| Event Day of the Week | Tuesday |
| Time of Event | 1515 |
| Event Time Zone | Pacific Standard Time |
| Event City | Enumclaw |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98022 |
| Event Date Year | 2004 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 471523N |
| Event Location Longitude | 1215754W |
| 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 | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1553 Pacific Standard Time |
| Direction of event from weather observation facility (degrees) | 300 |
| Weather Observation Facility ID | BFI |
| Elevation of weather observation facility | 18 |
| Distance of event from weather observation facility (units?) | 22 |
| Time Zone of the weather observation | PST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 4400 |
| 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) | 6 |
| Air Temperature at event time (in degrees celsius) | 6 |
| Dew Point at event time (in degress fahrenheit) | 5 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | Variable |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Light and Variable |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.18 |
| 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) | 15796 |
| NTSB Notification Source | FAA Operations Center |
| NTSB Notification Date | Jan 13 2004 12:00AM |
| NTSB Notification Time | 1524 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jun 30 2004 12:15PM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Seattle FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N64ML |
| NTSB Number | SEA04LA033 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | 172RG |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 172RG0081 |
| Certified Max Gross Weight | 2650 |
| 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 | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Nov 5 2003 12:00AM |
| Airframe hours since last inspection | 44 |
| Airframe Hours | 5224 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Galvin Flying Service |
| Aircraft Owner Street Address | 7149 Perimeter Road South |
| Aircraft Owner City | Seattle |
| Aircraft Owner State | WA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 98108 |
| 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 | BFI |
| Departure City | Seattle |
| Departure State | WA |
| Departure Country | USA |
| Departure Time | 1445 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | BFI |
| Destination City | -- |
| Destination State | -- |
| Destination Country | -- |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Apr 27 2004 5:57PM |
| User who most recently changed record | STAM |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |