Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Custer, Washington 98240
Sunday, June 10, 2001 12:20 PDT
NTSB Narrative Summary Released at Completion of Accident
The experimental category Yakovlev Yak-52, was destroyed after colliding with terrain while maneuvering. The first pilot, a commercial pilot/certified flight instructor who was seated in the forward seat, and the second pilot, a commercial pilot receiving instruction, were fatally injured. The accident airplane, a Yak-52, was the number two airplane in a flight of three aircraft. Shortly after takeoff, the number three airplane (Yak-18) returned to secure a fuel door that became unlatched during the initial takeoff. The pilot of the Yak-52 elected to maneuver over an area know as Cherry Point and wait for pilot of the Yak-18 to rejoin him. Approximately 10 minutes later, the pilot of the Yak-18 rejoined the Yak-52. The Yak 18 pilot stated that as he approached the area from the northwest, he observed the accident airplane maneuvering northeast of his position at an altitude of 1,500 feet mean sea level (MSL). He instructed the Yak-52 pilot to reverse his course in an effort to join him in formation flight. He reported that shortly after the pilot of the Yak-52 initiated the turn to the west (left), the airplane "...stalled and pitched nose down at about 40-60 degrees." Reportedly, the Yak-52 then rolled to the right, pitched up and oscillated around its vertical axis. Witnesses stated that the accident airplane rotated 2-3 times prior to impacting terrain. The pilot of the Yak-18 stated the accident airplane impacted terrain in a relatively level attitude with little forward motion. Post accident inspection of the airplane and associated components revealed no evidence of a preimpact mechanical malfunction or failure.
NTSB Probable Cause Narrative
The first pilot's failure to maintain aircraft control while maneuvering. Factors include an inadvertent stall.
Event Information
| Type of Event | Accident |
| Event Date | 6/10/2001 |
| Event Day of the Week | Sunday |
| Time of Event | 1220 |
| Event Time Zone | Pacific Daylight Time |
| Event City | Custer |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98240 |
| Event Date Year | 2001 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| 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 | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1205 Pacific Daylight Time |
| Direction of event from weather observation facility (degrees) | 20 |
| Weather Observation Facility ID | BLI |
| Elevation of weather observation facility | 170 |
| Distance of event from weather observation facility (units?) | 165 |
| Time Zone of the weather observation | PDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 3300 |
| Lowest Non-Ceiling Height | 2700 |
| Sky/Lowest/Cloud Conditions | Few |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 13 |
| Dew Point at event time (in degress fahrenheit) | 8 |
| Wind Direction (degrees magnetic) | 180 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 13 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.06 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | 2 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | -- |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 11770 |
| NTSB Notification Source | FAA-REGIONAL OPERATIONS |
| NTSB Notification Date | Jun 10 2001 12:00AM |
| NTSB Notification Time | 1255 |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Jun 3 2002 12:16PM |
| 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 | N52BG |
| NTSB Number | SEA01LA116 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Destroyed |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Yakovlev |
| Aircraft Model | YAK 52 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 889106 |
| Certified Max Gross Weight | 2800 |
| 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 | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jun 4 2000 12:00AM |
| Airframe hours since last inspection | 40 |
| Airframe Hours | 905 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Neil S. Granley |
| Aircraft Owner Street Address | 5208 134 PL South |
| Aircraft Owner City | Bellevue |
| Aircraft Owner State | WA |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 98005 |
| 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 | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | -- |
| Departure City | Point Roberts |
| Departure State | WA |
| Departure Country | USA |
| Departure Time | 1220 |
| Departure Time Zone | PDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | PAE |
| Destination City | EVERETT |
| Destination State | WA |
| Destination Country | USA |
| Specific Phase of Flight | Maneuvering - turn to reverse direction |
| Report sent to ICAO? | Yes |
| Evacuation occurred | No |
| Date of most recent change to record | Mar 18 2002 5:26PM |
| User who most recently changed record | STAM |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | -- |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |