Individually Owned: 150,657
Corporate Owned: 137,281
Renton Muni Airport
Aircraft Accident/Incident Report
Renton, Washington 98055
Friday, July 4, 2003 11:18 PDT
NTSB Narrative Summary Released at Completion of Accident
The pilot reported that the airplane experienced an electrical malfunction 2-3 minutes after takeoff. After multiple unsuccessful attempts to reset the electrical system, the pilot attempted to manually lower the landing gear in preparation for a landing. He reported that he was able to actuate the manual gear extension handle, however, the landing gear would not fully extend and lock. After multiple additional attempts to fully lower the gear, the pilot initiated a landing with the main landing gear in the midrange position. Examination of the landing gear system by representatives from the NTSB and FAA revealed that the landing gear actuator housing fractured, and separated from the gearbox. Damage was also noted to the actuator drive coupling. Representatives from the FAA and the manufacturer of the gear assembly conducted the teardown and examination of the electric landing gear actuator motor. During the examination, 14 volts was applied to the actuator motor in an attempt to functionally test the DC motor. The electric motor did not respond, or draw current. Further examination of the motor revealed that the two brushes in the motor were of dissimilar type and design and showed signs of arcing. Additionally, the motors armature showed signs of severe wear. Logbook records indicated that the electric landing gear motor was serviced on February 1, 2001, approximately 39 flight hours prior to the accident. The log entry indicated that the armature shaft and brushes were replaced and that the gear motor was returned to service.
NTSB Probable Cause Narrative
In-flight failure of the electric landing gear motor during the initial takeoff climb.
Event Information
| Type of Event | Accident |
| Event Date | 7/4/2003 |
| Event Day of the Week | Friday |
| Time of Event | 1118 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Renton |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98055 |
| Event Date Year | 2003 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 472930N |
| Event Location Longitude | 1221254W |
| Event Location Airport | RENTON MUNI |
| Event Location Nearest Airport ID | RNT |
| 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 | 32 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1153 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | KRNT |
| Elevation of weather observation facility | 32 |
| Distance of event from weather observation facility (units?) | -- |
| 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) | 21 |
| Dew Point at event time (in degress fahrenheit) | 11 |
| Wind Direction (degrees magnetic) | 350 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 7 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.15 |
| 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) | 15245 |
| NTSB Notification Source | FAA-ROC |
| NTSB Notification Date | Jul 4 2003 12:00AM |
| NTSB Notification Time | 1143 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Mar 30 2004 8:14AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Seattle, Washington |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N201DV |
| NTSB Number | SEA03LA128 |
| 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 | Mooney |
| Aircraft Model | M20-J |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 24-0088 |
| Certified Max Gross Weight | 2740 |
| 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 | Aug 7 2002 12:00AM |
| Airframe hours since last inspection | 15 |
| Airframe Hours | 2263 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Roy Hawk |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Issaquah |
| Aircraft Owner State | WA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 98027 |
| Operator is an individual? | No |
| Operator Name | Mark W. Hawk |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | Maple Valley |
| Operator State | WA |
| Operator Country | USA |
| Operator Zip code | 98038 |
| 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 | Yes |
| Departure Airport Code | RNT |
| Departure City | Renton |
| Departure State | WA |
| Departure Country | USA |
| Departure Time | 1030 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | RNT |
| Destination City | Renton |
| Destination State | WA |
| Destination Country | USA |
| Specific Phase of Flight | Landing |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | Feb 11 2004 5:10PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 33 |
| Runway Length | 5382 |
| Runway Width | 200 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |