Individually Owned: 150,657
Corporate Owned: 137,281
Seattle-Tacoma Intl Airport
Aircraft Accident/Incident Report
Seattle, Washington 98188
Friday, December 20, 1996 20:45 PST
NTSB Narrative Summary Released at Completion of Accident
The aircraft was taxiing into a gate area in close proximity to another parked aircraft, a fuel truck, a building, and a jetway. The end of the truck was overhanging into a designated safety zone. The left wing walker who was assisting in guiding the airplane into the ramp was standing in a position which allowed his view of the left wing tip to be obstructed by the fuel truck. The wing walker stated that he gave the emergency stop signal to the lead marshaler when he noticed that the left wing tip light disappeared behind the fuel truck. The lead marshaler immediately gave the stop signal to the pilot, but the airplane continued to roll during the pilot's reaction and braking. The left wing leading edge slat impacted the rear of the fuel truck and slat's skin was dented. Rain and dark night conditions prevailed at the time. The fuel truck had been struck in another incident by the same aircraft type while parked at the same gate. The gate's ramp was congested, and was marked by painted lines that were faded and difficult to discern under artificially-lighted, wet conditions at night.
NTSB Probable Cause Narrative
The failure of the left wing walker to verify the clearance between the left wing and the fuel truck during taxi, and his delay in signaling the lead marshaller to alert the pilot to stop the aircraft prior to impact. Factors contributing to the incident include congested ramp facilities, inadequate ramp markings, rain, and dark night conditions.
Event Information
| Type of Event | Incident |
| Event Date | 12/20/1996 |
| Event Day of the Week | Friday |
| Time of Event | 2045 |
| Event Time Zone | Pacific Standard Time |
| Event City | SEATTLE |
| Event State | WASHINGTON |
| Event Country | -- |
| Zipcode of the event site | 98188 |
| Event Date Year | 1996 |
| Event Date Month | 12 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | SEATTLE-TACOMA INTL |
| Event Location Nearest Airport ID | SEA |
| 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 | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Unknown |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| Lighting Conditions | Night/Dark |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Unknown |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 0 |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Light |
| 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 | 144 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 5043 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Dec 20 1996 12:00AM |
| NTSB Notification Time | 2200 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 8 2000 10:30AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N941AS |
| NTSB Number | SEA97IA040 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 121: Air Carrier |
| Type of Flight Plan filed | IFR |
| Flight plan Was Activated? | -- |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | McDonnell Douglas |
| Aircraft Model | MD-80 |
| Aircraft Series Identifier | MD-80 |
| Aircraft Serial Number | 49925 |
| Certified Max Gross Weight | 149500 |
| 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 | 137 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Dec 20 1996 12:00AM |
| Airframe hours since last inspection | 0 |
| Airframe Hours | 22423 |
| ELT Installed | No |
| ELT Activated | Unknown |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | ALASKA AIRLINES, INC. |
| Aircraft Owner Street Address | P.O. BOX 68900 |
| Aircraft Owner City | SEATTLE |
| Aircraft Owner State | WA |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 98168 |
| Operator is an individual? | -- |
| 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 | ASAA |
| 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 Only |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | No |
| Departure Airport Code | LAX |
| Departure City | LOS ANGELES |
| Departure State | CA |
| Departure Country | |
| Departure Time | 0 |
| Departure Time Zone | |
| Destination Same as Local Flt | crash at destination city |
| Destination Airport Code | SEA |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | -- |
| 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 | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |