Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Plummer, Idaho 83851
Saturday, April 19, 2003 17:15 PDT
NTSB Narrative Summary Released at Completion of Accident
During the last part of the landing roll, as the pilot was applying the brakes, the left main gear brake locked up, resulting in the tailwheel-equipped aircraft pulling hard to the left. As he tried to bring the aircraft to a stop, it nosed over onto its back. It was ultimately determined that the parking brake lock activation tab on the left brake master cylinder became stuck on the master cylinder plunger rod, resulting in a situation where the pilot was unable to reduce braking pressure on the left side. A further inspection of the system revealed that there was a burr on the master cylinder shaft. When the left brake was applied and then released, the burr lifted the parking brake locking tab, through which the cylinder shaft passes, and the spring that should press the tab back down to the unlocked position was unable to do so. This resulted in the failure of the brake to release, and it therefore remained locked in whatever had been its most fully-applied position. The malfunction was able to be duplicated during a post-accident inspection/test of the system.
NTSB Probable Cause Narrative
The jamming of the left parking brake locking tab on a burr on the left brake master cylinder activation rod during the landing roll, resulting in the left brake becoming locked in a position where excessive braking was applied.
Event Information
| Type of Event | Accident |
| Event Date | 4/19/2003 |
| Event Day of the Week | Saturday |
| Time of Event | 1715 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Plummer |
| Event State | IDAHO |
| Event Country | -- |
| Zipcode of the event site | 83851 |
| Event Date Year | 2003 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 472036N |
| Event Location Longitude | 1165454W |
| Event Location Airport | -- |
| Event Location Nearest Airport ID | -- |
| 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 | 2800 |
| Weather Briefing Completeness | -- |
| 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) | 20 |
| Air Temperature at event time (in degrees celsius) | 16 |
| 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 | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.12 |
| 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) | 13730 |
| NTSB Notification Source | FAA Operations Center |
| NTSB Notification Date | Apr 19 2003 12:00AM |
| NTSB Notification Time | 2055 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jul 23 2003 8:35AM |
| User who most recently changed record | NTSB\MONR |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Spokane FSDO |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N114MK |
| NTSB Number | SEA03LA066 |
| 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 | Maule |
| Aircraft Model | MX-7-235 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 10022C |
| Certified Max Gross Weight | 2500 |
| 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 | Aug 3 2002 12:00AM |
| Airframe hours since last inspection | 49 |
| Airframe Hours | 1166 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Kevin G. Griffin |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Renton |
| Aircraft Owner State | WA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 98056 |
| 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 | S72 |
| Departure City | Saint Maries |
| Departure State | ID |
| Departure Country | USA |
| Departure Time | 1700 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | -- |
| Destination City | Plummer |
| Destination State | ID |
| Destination Country | USA |
| Specific Phase of Flight | Landing - roll |
| Report sent to ICAO? | No |
| Evacuation occurred | No |
| Date of most recent change to record | May 29 2003 4:23PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | 27 |
| Runway Length | 1500 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |