Individually Owned: 150,657
Corporate Owned: 137,281
Yeager Airport
Aircraft Accident/Incident Report
Charleston, West Virginia 25301
Wednesday, January 22, 1997 9:10 EST
NTSB Narrative Summary Released at Completion of Accident
The captain said that during takeoff rotation, the airplane rolled left. He noted no warning lights or horns before or during the event. He applied right control wheel and right rudder to stop the left roll. After the captain had the airplane's roll stabilized, he 'made a wide left pattern and returned to the departure airport.' The airplane was landed without further incident. A postincident inspection of the airplane revealed that the left inboard roll spoiler was 'jammed and partially deployed.' An examination and disassembly of the roll spoiler servoactuator revealed that a plug (PN A50993-1), which had been fusion-welded into the base of the piston (PN A50992-1), had separated and lodged between the base of the piston and the shims, restricting the piston's movement. Dowty Aerospace (the manufacturer) had recorded six previous failures of fusion welds in pistons on DHC-8 roll spoiler servoactuators before this incident.
NTSB Probable Cause Narrative
a fractured fusion weld in the piston of the roll spoiler servoactuator, which allowed the plug at the base of the piston to separate and jam the piston. A factor relating to the incident was: the inadequate design of the airplane's roll spoiler servoactuator piston.
Event Information
| Type of Event | Incident |
| Event Date | 1/22/1997 |
| Event Day of the Week | Wednesday |
| Time of Event | 910 |
| Event Time Zone | Eastern Standard Time |
| Event City | CHARLESTON |
| Event State | WEST VIRGINIA |
| Event Country | -- |
| Zipcode of the event site | 25301 |
| Event Date Year | 1997 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | YEAGER |
| Event Location Nearest Airport ID | CRW |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | 50 |
| Airport Elevation | 982 |
| Weather Briefing Completeness | Not pertinent |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1256 Eastern Standard Time |
| Direction of event from weather observation facility (degrees) | 150 |
| Weather Observation Facility ID | CRW |
| Elevation of weather observation facility | 982 |
| Distance of event from weather observation facility (units?) | 1 |
| Time Zone of the weather observation | EST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 8000 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Broken |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 8 |
| Air Temperature at event time (in degrees celsius) | 15 |
| Dew Point at event time (in degress fahrenheit) | 6 |
| Wind Direction (degrees magnetic) | 210 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Unknown |
| Wind Gust (knots) | 19 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 970 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 11 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 5010 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Feb 25 1997 12:00AM |
| NTSB Notification Time | 900 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 8 2000 12:05PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N852MA |
| NTSB Number | CHI97IA075 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | None |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | de Havilland |
| Aircraft Model | DHC-8-102 |
| Aircraft Series Identifier | DHC-8-102 |
| Aircraft Serial Number | 349 |
| Certified Max Gross Weight | 27000 |
| 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 | 39 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | Continuous Airworthiness |
| Date of Last Inspection | Jan 19 1997 12:00AM |
| Airframe hours since last inspection | 20 |
| Airframe Hours | 9665 |
| ELT Installed | Yes |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | RAINIER AIRCRAFT LEASING, INC. |
| Aircraft Owner Street Address | 7755 EAST MARGINAL WAY |
| Aircraft Owner City | SEATTLE |
| Aircraft Owner State | WA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 98109 |
| Operator is an individual? | -- |
| Operator Name | MESABA AVIATION |
| Operator Same as Owner? | No |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | 7501 26TH AVENUE SOUTH |
| Operator City | MINEAPOLIS |
| Operator State | MN |
| Operator Country | |
| Operator Zip code | 55450 |
| Operator Code | MALA |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Passenger/Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | CRW |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 910 |
| Departure Time Zone | EST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | ROA |
| Destination City | ROANOKE |
| Destination State | VA |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 23 |
| Runway Length | 6302 |
| Runway Width | 150 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |