Individually Owned: 150,657
Corporate Owned: 137,281
Roche Harbor Airport
Aircraft Accident/Incident Report
Roche Harbor, Washington 98250
Wednesday, July 11, 2007 18:30 PDT
NTSB Narrative Summary Released at Completion of Accident
As the airplane approached the destination airport, it had an electrical failure. The pilot stated he was concerned about the potential for an electrical fire, and elected not to attempt to troubleshoot the malfunction. He extended the landing gear by placing the gear lever in the "DOWN" position, and said he visually confirmed that they were down by the mirrors affixed to the wings, as the landing gear indicator lights in the cockpit were not illuminated due to the loss of electrical power. The pilot did not use the emergency gear extension system. With the landing gear appearing to be extended, the airplane touched down on the runway and the main landing gear collapsed. The airplane's loss of electrical power rendered the landing gear warning system inoperative; the warning system is designed to help prevent the pilot from inadvertently making a landing with the landing gear retracted. No evidence of any mechanical malfunction was found during the postimpact examination of the landing gear and alternator/battery electrical system. If the pilot had used the emergency gear extension system per the procedures prescribed in the pilot's operating handbook, it is probable that the landing gear would have extended and locked. The underlying cause of the electrical system failure could not be determined.
NTSB Probable Cause Narrative
The pilot's failure to perform the emergency landing gear extension procedure prior to landing. A contributing factor in the accident was the failure of the electrical system.
Event Information
| Type of Event | Accident |
| Event Date | 7/11/2007 |
| Event Day of the Week | Wednesday |
| Time of Event | 1830 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Roche Harbor |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98250 |
| Event Date Year | 2007 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 483644N |
| Event Location Longitude | 1230819W |
| Event Location Airport | Roche Harbor Airport |
| Event Location Nearest Airport ID | WA09 |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 0.25 |
| Degrees magnetic from airport | -- |
| Airport Elevation | 100 |
| 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) | 140 |
| Weather Observation Facility ID | FHR |
| Elevation of weather observation facility | 113 |
| Distance of event from weather observation facility (units?) | 7 |
| 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) | 31 |
| Dew Point at event time (in degress fahrenheit) | 10 |
| Wind Direction (degrees magnetic) | 350 |
| 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) | 29.94 |
| 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 | 3 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 23020 |
| NTSB Notification Source | FAA |
| NTSB Notification Date | Jul 10 2007 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Feb 28 2008 3:59PM |
| User who most recently changed record | NTSB\johb |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | WP-SEA-FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N9551B |
| NTSB Number | LAX07LA215 |
| 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 | 172RG0873 |
| Certified Max Gross Weight | 2650 |
| 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 | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Unknown |
| Date of Last Inspection | -- |
| Airframe hours since last inspection | -- |
| Airframe Hours | 7531 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Northwest Zephyr Aviation LTD |
| Aircraft Owner Street Address | 909 254th Ave. Northeast |
| Aircraft Owner City | Sammamish |
| Aircraft Owner State | WA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 98074 |
| Operator is an individual? | No |
| Operator Name | Avian Flight Center |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 8900 State Hwy 3 SW |
| Operator City | Port Orchard |
| Operator State | WA |
| Operator Country | USA |
| Operator Zip code | 98367 |
| 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 | KPWT |
| Departure City | Bremerton |
| Departure State | WA |
| Departure Country | USA |
| Departure Time | 1750 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | WA09 |
| Destination City | Roche Harbor |
| Destination State | WA |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 25 2008 4:59PM |
| User who most recently changed record | COOS |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 25 |
| Runway Length | 3593 |
| Runway Width | 30 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |